Axes3d.mouse_init(), facing problems when embedding matplotlib 3d-projection into PyQt5 App

Community matplotlib-users
1

Hi,

I embedded Ryan’s examble for PyQt5-matplotlib use into my App but I get the following error:

/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py:1009: UserWarning: Axes3D.figure.canvas is ‘None’, mouse rotation disabled. Set canvas then call Axes3D.mouse_init().
warnings.warn(‘Axes3D.figure.canvas is ‘None’, mouse rotation disabled. Set canvas then call Axes3D.mouse_init().’)

From Stackoverflow, which host to question about this, I know that mouse actions are disabled when the canvas is re-initialized by whatever.

The only position I do such an operation is in here:

def addmpl(self, fig):
self.canvas = FigureCanvas(fig)
#FigureCanvas.init(self, fig)
#Axes3D.mouse_init(self)
self.mplvl.addWidget(self.canvas)
self.canvas.draw()
self.toolbar = NavigationToolbar(self.canvas, self.mplwindow, coordinates=True)
self.mplvl.addWidget(self.toolbar)

On of the Stackoverflow suggestion says, that re initializing FigureCanvas should do the trick but I’ll get:

Traceback (most recent call last):
File “./ex_0.1.py”, line 145, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 116, in addmpl
FigureCanvas.init(self, fig)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5agg.py”, line 181, in init
FigureCanvasQT.init(self, figure)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5.py”, line 237, in init
super(FigureCanvasQT, self).init(figure=figure)
TypeError: super(type, obj): obj must be an instance or subtype of type

as follow-up error message.

just using Axes3D.mouse_init() , as suggested by matplotlib itself, leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init()
TypeError: mouse_init() missing 1 required positional argument: ‘self’

adding self leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init(self)
File “/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py”, line 1002, in mouse_init
canv = self.figure.canvas
AttributeError: ‘Main’ object has no attribute ‘figure’
./ex_0.1.py &

Maybe I’m adding those lines at the wrong place, but I could fined anything useful in the matplotlib documantation, that would help me out, either.

Any thougts that might help?

Cheers,

Christian

···

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

2

The addmpl() method isn’t right. You created a canvas object, assigned it to self.canvas, but then tried to call FigureCanvas.init(), passing it whatever object “self” is. What class is addmpl() a part of? What does it subclass?

···

On Tue, Apr 21, 2015 at 7:24 AM, Christian Ambros <ambrosc@…2693…> wrote:

Hi,

I embedded Ryan’s examble for PyQt5-matplotlib use into my App but I get the following error:

/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py:1009: UserWarning: Axes3D.figure.canvas is ‘None’, mouse rotation disabled. Set canvas then call Axes3D.mouse_init().
warnings.warn(‘Axes3D.figure.canvas is 'None', mouse rotation disabled. Set canvas then call Axes3D.mouse_init().’)

From Stackoverflow, which host to question about this, I know that mouse actions are disabled when the canvas is re-initialized by whatever.

The only position I do such an operation is in here:

def addmpl(self, fig):
self.canvas = FigureCanvas(fig)
#FigureCanvas.init(self, fig)
#Axes3D.mouse_init(self)
self.mplvl.addWidget(self.canvas)
self.canvas.draw()
self.toolbar = NavigationToolbar(self.canvas, self.mplwindow, coordinates=True)
self.mplvl.addWidget(self.toolbar)

On of the Stackoverflow suggestion says, that re initializing FigureCanvas should do the trick but I’ll get:

Traceback (most recent call last):
File “./ex_0.1.py”, line 145, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 116, in addmpl
FigureCanvas.init(self, fig)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5agg.py”, line 181, in init
FigureCanvasQT.init(self, figure)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5.py”, line 237, in init
super(FigureCanvasQT, self).init(figure=figure)
TypeError: super(type, obj): obj must be an instance or subtype of type

as follow-up error message.

just using Axes3D.mouse_init() , as suggested by matplotlib itself, leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init()
TypeError: mouse_init() missing 1 required positional argument: ‘self’

adding self leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init(self)
File “/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py”, line 1002, in mouse_init
canv = self.figure.canvas
AttributeError: ‘Main’ object has no attribute ‘figure’
./ex_0.1.py &

Maybe I’m adding those lines at the wrong place, but I could fined anything useful in the matplotlib documantation, that would help me out, either.

Any thougts that might help?

Cheers,

Christian

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT

Develop your own process in accordance with the BPMN 2 standard

Learn Process modeling best practices with Bonita BPM through live exercises

http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_

source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF

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3

Since there seems to be no progress with this issue, may I assume there isn’t any interest in it?

I took a further look around in the internet but couldn’t any solution.

It leads to an other question: How many users of matplotlib are using 3d-plots anyway? It we are just a few and there won’t be anyone who wants to embed it in PyQt5, than I can understand that this issue doesn’t concern no-one and I have to look somewhere else to find a 3d-plotting lib which is embedable.

cheers,

Christain

···

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

On Tuesday, April 21, 2015 1:44 PM, Benjamin Root <ben.root@…1304…> wrote:

The addmpl() method isn’t right. You created a canvas object, assigned it to self.canvas, but then tried to call FigureCanvas.init(), passing it whatever object “self” is. What class is addmpl() a part of? What does it subclass?

On Tue, Apr 21, 2015 at 7:24 AM, Christian Ambros <ambrosc@…2693…> wrote:

Hi,

I embedded Ryan’s examble for PyQt5-matplotlib use into my App but I get the following error:

/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py:1009: UserWarning: Axes3D.figure.canvas is ‘None’, mouse rotation disabled. Set canvas then call Axes3D.mouse_init().
warnings.warn(‘Axes3D.figure.canvas is 'None', mouse rotation disabled. Set canvas then call Axes3D.mouse_init().’)

From Stackoverflow, which host to question about this, I know that mouse actions are disabled when the canvas is re-initialized by whatever.

The only position I do such an operation is in here:

def addmpl(self, fig):
self.canvas = FigureCanvas(fig)
#FigureCanvas.init(self, fig)
#Axes3D.mouse_init(self)
self.mplvl.addWidget(self.canvas)
self.canvas.draw()
self.toolbar = NavigationToolbar(self.canvas, self.mplwindow, coordinates=True)
self.mplvl.addWidget(self.toolbar)

On of the Stackoverflow suggestion says, that re initializing FigureCanvas should do the trick but I’ll get:

Traceback (most recent call last):
File “./ex_0.1.py”, line 145, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 116, in addmpl
FigureCanvas.init(self, fig)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5agg.py”, line 181, in init
FigureCanvasQT.init(self, figure)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5.py”, line 237, in init
super(FigureCanvasQT, self).init(figure=figure)
TypeError: super(type, obj): obj must be an instance or subtype of type

as follow-up error message.

just using Axes3D.mouse_init() , as suggested by matplotlib itself, leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init()
TypeError: mouse_init() missing 1 required positional argument: ‘self’

adding self leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init(self)
File “/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py”, line 1002, in mouse_init
canv = self.figure.canvas
AttributeError: ‘Main’ object has no attribute ‘figure’
./ex_0.1.py &

Maybe I’m adding those lines at the wrong place, but I could fined anything useful in the matplotlib documantation, that would help me out, either.

Any thougts that might help?

Cheers,

Christian

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT

Develop your own process in accordance with the BPMN 2 standard

Learn Process modeling best practices with Bonita BPM through live exercises

http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_

source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF

Matplotlib-users mailing list

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https://lists.sourceforge.net/lists/listinfo/matplotlib-users

4

I think there is something wrong with the embedding code rather than there being an actual bug. I have embedded mplot3d stuff before (admittedly, not in qt5) with no problems. I haven’t had the time yet to examine your code to see what the potential issue is, though. I have also never used Qt designer, so I have no clue if there is something that it is doing that might be making things difficult.

I already know that the code you originally posted has errors in it. I would suggest first making a prototype without Qt Designer as a proof-of-concept, perhaps starting with one of our examples in the gallery?

Ben Root

···

On Tue, Apr 28, 2015 at 2:12 PM, Christian Ambros <ambrosc@…2693…> wrote:

Since there seems to be no progress with this issue, may I assume there isn’t any interest in it?

I took a further look around in the internet but couldn’t any solution.

It leads to an other question: How many users of matplotlib are using 3d-plots anyway? It we are just a few and there won’t be anyone who wants to embed it in PyQt5, than I can understand that this issue doesn’t concern no-one and I have to look somewhere else to find a 3d-plotting lib which is embedable.

cheers,

Christain

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

On Tuesday, April 21, 2015 1:44 PM, Benjamin Root <ben.root@…1304…> wrote:

The addmpl() method isn’t right. You created a canvas object, assigned it to self.canvas, but then tried to call FigureCanvas.init(), passing it whatever object “self” is. What class is addmpl() a part of? What does it subclass?

On Tue, Apr 21, 2015 at 7:24 AM, Christian Ambros <ambrosc@…2015…693…> wrote:

Hi,

I embedded Ryan’s examble for PyQt5-matplotlib use into my App but I get the following error:

/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py:1009: UserWarning: Axes3D.figure.canvas is ‘None’, mouse rotation disabled. Set canvas then call Axes3D.mouse_init().
warnings.warn(‘Axes3D.figure.canvas is 'None', mouse rotation disabled. Set canvas then call Axes3D.mouse_init().’)

From Stackoverflow, which host to question about this, I know that mouse actions are disabled when the canvas is re-initialized by whatever.

The only position I do such an operation is in here:

def addmpl(self, fig):
self.canvas = FigureCanvas(fig)
#FigureCanvas.init(self, fig)
#Axes3D.mouse_init(self)
self.mplvl.addWidget(self.canvas)
self.canvas.draw()
self.toolbar = NavigationToolbar(self.canvas, self.mplwindow, coordinates=True)
self.mplvl.addWidget(self.toolbar)

On of the Stackoverflow suggestion says, that re initializing FigureCanvas should do the trick but I’ll get:

Traceback (most recent call last):
File “./ex_0.1.py”, line 145, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 116, in addmpl
FigureCanvas.init(self, fig)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5agg.py”, line 181, in init
FigureCanvasQT.init(self, figure)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5.py”, line 237, in init
super(FigureCanvasQT, self).init(figure=figure)
TypeError: super(type, obj): obj must be an instance or subtype of type

as follow-up error message.

just using Axes3D.mouse_init() , as suggested by matplotlib itself, leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init()
TypeError: mouse_init() missing 1 required positional argument: ‘self’

adding self leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init(self)
File “/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py”, line 1002, in mouse_init
canv = self.figure.canvas
AttributeError: ‘Main’ object has no attribute ‘figure’
./ex_0.1.py &

Maybe I’m adding those lines at the wrong place, but I could fined anything useful in the matplotlib documantation, that would help me out, either.

Any thougts that might help?

Cheers,

Christian

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT

Develop your own process in accordance with the BPMN 2 standard

Learn Process modeling best practices with Bonita BPM through live exercises

http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_

source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF

Matplotlib-users mailing list

Matplotlib-users@lists.sourceforge.net

https://lists.sourceforge.net/lists/listinfo/matplotlib-users

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Widest out-of-the-box monitoring support with 50+ applications

Performance metrics, stats and reports that give you Actionable Insights

Deep dive visibility with transaction tracing using APM Insight.

http://ad.doubleclick.net/ddm/clk/290420510;117567292;y

Matplotlib-users mailing list

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5

Hi Benjamin,

I would do that if my task were my private stuff, but in this case it’s work-related and my boss wants me to use the designer and he already set a deadline, which, I already knew, is set to tight. I told him before, that it would be just a try but he sold it to his boss after some pressure. You know how the bosses’ bosses are, they don’t get the idea that innovation can’t be dictated. They don’t understand the concept that software is written and doesn’t come into existence out of nothing.

Without PyQt5 it’s working fine. I got the plots and they are gorgeous, but that doesn’t help when presenting to the bosses. If I just would know how to activate the 3d-draw’s mouse action again, by hand, than it has to last just some moments for the presentation, afterwards I have the time to examine and find a more robust solution.

Thanks for the effort.

cheers,

Christian

···

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

On Tuesday, April 28, 2015 7:30 PM, Benjamin Root <ben.root@…1304…> wrote:

I think there is something wrong with the embedding code rather than there being an actual bug. I have embedded mplot3d stuff before (admittedly, not in qt5) with no problems. I haven’t had the time yet to examine your code to see what the potential issue is, though. I have also never used Qt designer, so I have no clue if there is something that it is doing that might be making things difficult.

I already know that the code you originally posted has errors in it. I would suggest first making a prototype without Qt Designer as a proof-of-concept, perhaps starting with one of our examples in the gallery?

Ben Root

On Tue, Apr 28, 2015 at 2:12 PM, Christian Ambros <ambrosc@…2693…> wrote:

Since there seems to be no progress with this issue, may I assume there isn’t any interest in it?

I took a further look around in the internet but couldn’t any solution.

It leads to an other question: How many users of matplotlib are using 3d-plots anyway? It we are just a few and there won’t be anyone who wants to embed it in PyQt5, than I can understand that this issue doesn’t concern no-one and I have to look somewhere else to find a 3d-plotting lib which is embedable.

cheers,

Christain

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

On Tuesday, April 21, 2015 1:44 PM, Benjamin Root <ben.root@…1304…> wrote:

The addmpl() method isn’t right. You created a canvas object, assigned it to self.canvas, but then tried to call FigureCanvas.init(), passing it whatever object “self” is. What class is addmpl() a part of? What does it subclass?

On Tue, Apr 21, 2015 at 7:24 AM, Christian Ambros <ambrosc@…2693…> wrote:

Hi,

I embedded Ryan’s examble for PyQt5-matplotlib use into my App but I get the following error:

/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py:1009: UserWarning: Axes3D.figure.canvas is ‘None’, mouse rotation disabled. Set canvas then call Axes3D.mouse_init().
warnings.warn(‘Axes3D.figure.canvas is 'None', mouse rotation disabled. Set canvas then call Axes3D.mouse_init().’)

From Stackoverflow, which host to question about this, I know that mouse actions are disabled when the canvas is re-initialized by whatever.

The only position I do such an operation is in here:

def addmpl(self, fig):
self.canvas = FigureCanvas(fig)
#FigureCanvas.init(self, fig)
#Axes3D.mouse_init(self)
self.mplvl.addWidget(self.canvas)
self.canvas.draw()
self.toolbar = NavigationToolbar(self.canvas, self.mplwindow, coordinates=True)
self.mplvl.addWidget(self.toolbar)

On of the Stackoverflow suggestion says, that re initializing FigureCanvas should do the trick but I’ll get:

Traceback (most recent call last):
File “./ex_0.1.py”, line 145, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 116, in addmpl
FigureCanvas.init(self, fig)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5agg.py”, line 181, in init
FigureCanvasQT.init(self, figure)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5.py”, line 237, in init
super(FigureCanvasQT, self).init(figure=figure)
TypeError: super(type, obj): obj must be an instance or subtype of type

as follow-up error message.

just using Axes3D.mouse_init() , as suggested by matplotlib itself, leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init()
TypeError: mouse_init() missing 1 required positional argument: ‘self’

adding self leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init(self)
File “/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py”, line 1002, in mouse_init
canv = self.figure.canvas
AttributeError: ‘Main’ object has no attribute ‘figure’
./ex_0.1.py &

Maybe I’m adding those lines at the wrong place, but I could fined anything useful in the matplotlib documantation, that would help me out, either.

Any thougts that might help?

Cheers,

Christian

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT

Develop your own process in accordance with the BPMN 2 standard

Learn Process modeling best practices with Bonita BPM through live exercises

http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_

source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF

Matplotlib-users mailing list

Matplotlib-users@lists.sourceforge.net

https://lists.sourceforge.net/lists/listinfo/matplotlib-users

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Widest out-of-the-box monitoring support with 50+ applications

Performance metrics, stats and reports that give you Actionable Insights

Deep dive visibility with transaction tracing using APM Insight.

http://ad.doubleclick.net/ddm/clk/290420510;117567292;y

Matplotlib-users mailing list

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6

One thing I see off the bat is your addmpl() method:

    def addmpl(self, fig):
        #FigureCanvas.__init__(self, fig)
        self.canvas = FigureCanvas(fig)
       
        Axes3D.mouse_init(self, rotate_btn=1, zoom_btn=2)
        self.mplvl.addWidget(self.canvas)
        self.canvas.draw()
        self.toolbar = NavigationToolbar(self.canvas, self.mplwindow, coordinates=True)
        self.mplvl.addWidget(self.toolbar)

You are calling Axes3D.mouse_init() on the Main object (that is self). That is completely wrong. It can only be called for the 3d axes objects.

Also, what I see happening here is some mixing up of how to do embedding. There are two approaches to embedding. 1) you can embedded GUI elements into your canvas widget, or 2) you can embed your canvas widget into your GUI app. The important distinction between the two is who controls the mainloop. In option 1 (and in matplotlib in general), pyplot will create the GUI app for you automatically (it is completely transparent to you) and kicks it off upon call to show(). But option 2 relinquishes that control to the developer’s GUI app. You cannot use pyplot for option 2, which is what you are doing. Rip out all of the pyplot stuff, and instantiate the Qt5 Figure object directly, and then obtain the axes objects from the figure object via calls to add_subplot(). You shouldn’t even need to do the whole mouse_init() stuff.

I now think this has nothing to do with Qt Designer. While I don’t specifically cover qt5 in my book, I do make all of these distinctions very clear in chapter 5 of my book “Interactive Applications using Matplotlib”.

Cheers!

Ben Root

···

On Tue, Apr 28, 2015 at 4:03 PM, Christian Ambros <ambrosc@…2693…> wrote:

Hi Benjamin,

I would do that if my task were my private stuff, but in this case it’s work-related and my boss wants me to use the designer and he already set a deadline, which, I already knew, is set to tight. I told him before, that it would be just a try but he sold it to his boss after some pressure. You know how the bosses’ bosses are, they don’t get the idea that innovation can’t be dictated. They don’t understand the concept that software is written and doesn’t come into existence out of nothing.

Without PyQt5 it’s working fine. I got the plots and they are gorgeous, but that doesn’t help when presenting to the bosses. If I just would know how to activate the 3d-draw’s mouse action again, by hand, than it has to last just some moments for the presentation, afterwards I have the time to examine and find a more robust solution.

Thanks for the effort.

cheers,

Christian

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

On Tuesday, April 28, 2015 7:30 PM, Benjamin Root <ben.root@…1304…> wrote:

I think there is something wrong with the embedding code rather than there being an actual bug. I have embedded mplot3d stuff before (admittedly, not in qt5) with no problems. I haven’t had the time yet to examine your code to see what the potential issue is, though. I have also never used Qt designer, so I have no clue if there is something that it is doing that might be making things difficult.

I already know that the code you originally posted has errors in it. I would suggest first making a prototype without Qt Designer as a proof-of-concept, perhaps starting with one of our examples in the gallery?

Ben Root

On Tue, Apr 28, 2015 at 2:12 PM, Christian Ambros <ambrosc@…2693…> wrote:

Since there seems to be no progress with this issue, may I assume there isn’t any interest in it?

I took a further look around in the internet but couldn’t any solution.

It leads to an other question: How many users of matplotlib are using 3d-plots anyway? It we are just a few and there won’t be anyone who wants to embed it in PyQt5, than I can understand that this issue doesn’t concern no-one and I have to look somewhere else to find a 3d-plotting lib which is embedable.

cheers,

Christain

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

On Tuesday, April 21, 2015 1:44 PM, Benjamin Root <ben.root@…1304…> wrote:

The addmpl() method isn’t right. You created a canvas object, assigned it to self.canvas, but then tried to call FigureCanvas.init(), passing it whatever object “self” is. What class is addmpl() a part of? What does it subclass?

On Tue, Apr 21, 2015 at 7:24 AM, Christian Ambros <ambrosc@…2015…693…> wrote:

Hi,

I embedded Ryan’s examble for PyQt5-matplotlib use into my App but I get the following error:

/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py:1009: UserWarning: Axes3D.figure.canvas is ‘None’, mouse rotation disabled. Set canvas then call Axes3D.mouse_init().
warnings.warn(‘Axes3D.figure.canvas is 'None', mouse rotation disabled. Set canvas then call Axes3D.mouse_init().’)

From Stackoverflow, which host to question about this, I know that mouse actions are disabled when the canvas is re-initialized by whatever.

The only position I do such an operation is in here:

def addmpl(self, fig):
self.canvas = FigureCanvas(fig)
#FigureCanvas.init(self, fig)
#Axes3D.mouse_init(self)
self.mplvl.addWidget(self.canvas)
self.canvas.draw()
self.toolbar = NavigationToolbar(self.canvas, self.mplwindow, coordinates=True)
self.mplvl.addWidget(self.toolbar)

On of the Stackoverflow suggestion says, that re initializing FigureCanvas should do the trick but I’ll get:

Traceback (most recent call last):
File “./ex_0.1.py”, line 145, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 116, in addmpl
FigureCanvas.init(self, fig)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5agg.py”, line 181, in init
FigureCanvasQT.init(self, figure)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5.py”, line 237, in init
super(FigureCanvasQT, self).init(figure=figure)
TypeError: super(type, obj): obj must be an instance or subtype of type

as follow-up error message.

just using Axes3D.mouse_init() , as suggested by matplotlib itself, leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init()
TypeError: mouse_init() missing 1 required positional argument: ‘self’

adding self leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init(self)
File “/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py”, line 1002, in mouse_init
canv = self.figure.canvas
AttributeError: ‘Main’ object has no attribute ‘figure’
./ex_0.1.py &

Maybe I’m adding those lines at the wrong place, but I could fined anything useful in the matplotlib documantation, that would help me out, either.

Any thougts that might help?

Cheers,

Christian

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT

Develop your own process in accordance with the BPMN 2 standard

Learn Process modeling best practices with Bonita BPM through live exercises

http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_

source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF

Matplotlib-users mailing list

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Deep dive visibility with transaction tracing using APM Insight.

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7

Ok, back from revision…

The is no mix-up for the show command. The only explicit show() command is commented out in line 41. It can be deleted. But I haven’t done that, yet. There are several bits of code which are remains of the design process since this is work in progress. Code cleaning will be done when the main functionality is in place.

Back to addmpl where I embedded gui elements into the canvas. Taking out the matplotlib taskbar doesn’t change a thing as I wrote earlier, but to make sure it doesn’t bother the mainloop, it should be commented out. I may not put it back in, because I don’t see the point in needing it. It was just to see if it’s possible.

But option 2 relinquishes that control to the developer’s GUI app. You cannot use pyplot for option 2, which is what you are doing.

Is that so? In line 116 I create the canvas, which is derived from matplotlib’s backend’s FigureCanvasQTAgg and given to the QWidget at line 119. That’s the only part where both interact with each other. the rest is handle by matplotlib.

The error message says that Axes3D.figure.canvas is ‘None’ and that’s why mouse rotation is disabled.

It’s None because there is no content at that point, when it’s passed to the QWidget. It’s filled with content in line 38. So if matplotlib disables the mouse rotation by default, when the canvas is empty how do I prevent this disabling by default?

If I can’t, at what point do I have to pass the filled canvas to the QWidget? How does that impact the GUI itself?

If I can’t enable the mouse rotation by hand and I just can pass filled canvas around, do I have to build a work around with initialize it with an empty 2D canvas and replace it later with the filled 3D canvas? How’s the mouse rotation activated then?

In general, I wouldn’t have to enable the rotation if it wouldn’t be switch off for an empty canvas.

I’m going to consult your book, now, for different ways of coping with such things…

cheers,

Christian

···

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

On Tuesday, April 28, 2015 8:28 PM, Benjamin Root <ben.root@…1304…> wrote:

One thing I see off the bat is your addmpl() method:

    def addmpl(self, fig):
        #FigureCanvas.__init__(self, fig)
        self.canvas = FigureCanvas(fig)
       
        Axes3D.mouse_init(self, rotate_btn=1, zoom_btn=2)
        self.mplvl.addWidget(self.canvas)
        self.canvas.draw()
        self.toolbar = NavigationToolbar(self.canvas, self.mplwindow, coordinates=True)
        self.mplvl.addWidget(self.toolbar)

You are calling Axes3D.mouse_init() on the Main object (that is self). That is completely wrong. It can only be called for the 3d axes objects.

Also, what I see happening here is some mixing up of how to do embedding. There are two approaches to embedding. 1) you can embedded GUI elements into your canvas widget, or 2) you can embed your canvas widget into your GUI app. The important distinction between the two is who controls the mainloop. In option 1 (and in matplotlib in general), pyplot will create the GUI app for you automatically (it is completely transparent to you) and kicks it off upon call to show(). But option 2 relinquishes that control to the developer’s GUI app. You cannot use pyplot for option 2, which is what you are doing. Rip out all of the pyplot stuff, and instantiate the Qt5 Figure object directly, and then obtain the axes objects from the figure object via calls to add_subplot(). You shouldn’t even need to do the whole mouse_init() stuff.

I now think this has nothing to do with Qt Designer. While I don’t specifically cover qt5 in my book, I do make all of these distinctions very clear in chapter 5 of my book “Interactive Applications using Matplotlib”.

Cheers!

Ben Root

On Tue, Apr 28, 2015 at 4:03 PM, Christian Ambros <ambrosc@…2693…> wrote:

Hi Benjamin,

I would do that if my task were my private stuff, but in this case it’s work-related and my boss wants me to use the designer and he already set a deadline, which, I already knew, is set to tight. I told him before, that it would be just a try but he sold it to his boss after some pressure. You know how the bosses’ bosses are, they don’t get the idea that innovation can’t be dictated. They don’t understand the concept that software is written and doesn’t come into existence out of nothing.

Without PyQt5 it’s working fine. I got the plots and they are gorgeous, but that doesn’t help when presenting to the bosses. If I just would know how to activate the 3d-draw’s mouse action again, by hand, than it has to last just some moments for the presentation, afterwards I have the time to examine and find a more robust solution.

Thanks for the effort.

cheers,

Christian

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

On Tuesday, April 28, 2015 7:30 PM, Benjamin Root <ben.root@…1304…> wrote:

I think there is something wrong with the embedding code rather than there being an actual bug. I have embedded mplot3d stuff before (admittedly, not in qt5) with no problems. I haven’t had the time yet to examine your code to see what the potential issue is, though. I have also never used Qt designer, so I have no clue if there is something that it is doing that might be making things difficult.

I already know that the code you originally posted has errors in it. I would suggest first making a prototype without Qt Designer as a proof-of-concept, perhaps starting with one of our examples in the gallery?

Ben Root

On Tue, Apr 28, 2015 at 2:12 PM, Christian Ambros <ambrosc@…2693…> wrote:

Since there seems to be no progress with this issue, may I assume there isn’t any interest in it?

I took a further look around in the internet but couldn’t any solution.

It leads to an other question: How many users of matplotlib are using 3d-plots anyway? It we are just a few and there won’t be anyone who wants to embed it in PyQt5, than I can understand that this issue doesn’t concern no-one and I have to look somewhere else to find a 3d-plotting lib which is embedable.

cheers,

Christain

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

On Tuesday, April 21, 2015 1:44 PM, Benjamin Root <ben.root@…1304…> wrote:

The addmpl() method isn’t right. You created a canvas object, assigned it to self.canvas, but then tried to call FigureCanvas.init(), passing it whatever object “self” is. What class is addmpl() a part of? What does it subclass?

On Tue, Apr 21, 2015 at 7:24 AM, Christian Ambros <ambrosc@…2693…> wrote:

Hi,

I embedded Ryan’s examble for PyQt5-matplotlib use into my App but I get the following error:

/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py:1009: UserWarning: Axes3D.figure.canvas is ‘None’, mouse rotation disabled. Set canvas then call Axes3D.mouse_init().
warnings.warn(‘Axes3D.figure.canvas is 'None', mouse rotation disabled. Set canvas then call Axes3D.mouse_init().’)

From Stackoverflow, which host to question about this, I know that mouse actions are disabled when the canvas is re-initialized by whatever.

The only position I do such an operation is in here:

def addmpl(self, fig):
self.canvas = FigureCanvas(fig)
#FigureCanvas.init(self, fig)
#Axes3D.mouse_init(self)
self.mplvl.addWidget(self.canvas)
self.canvas.draw()
self.toolbar = NavigationToolbar(self.canvas, self.mplwindow, coordinates=True)
self.mplvl.addWidget(self.toolbar)

On of the Stackoverflow suggestion says, that re initializing FigureCanvas should do the trick but I’ll get:

Traceback (most recent call last):
File “./ex_0.1.py”, line 145, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 116, in addmpl
FigureCanvas.init(self, fig)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5agg.py”, line 181, in init
FigureCanvasQT.init(self, figure)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5.py”, line 237, in init
super(FigureCanvasQT, self).init(figure=figure)
TypeError: super(type, obj): obj must be an instance or subtype of type

as follow-up error message.

just using Axes3D.mouse_init() , as suggested by matplotlib itself, leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init()
TypeError: mouse_init() missing 1 required positional argument: ‘self’

adding self leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init(self)
File “/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py”, line 1002, in mouse_init
canv = self.figure.canvas
AttributeError: ‘Main’ object has no attribute ‘figure’
./ex_0.1.py &

Maybe I’m adding those lines at the wrong place, but I could fined anything useful in the matplotlib documantation, that would help me out, either.

Any thougts that might help?

Cheers,

Christian

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT

Develop your own process in accordance with the BPMN 2 standard

Learn Process modeling best practices with Bonita BPM through live exercises

http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_

source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF

Matplotlib-users mailing list

Matplotlib-users@lists.sourceforge.net

https://lists.sourceforge.net/lists/listinfo/matplotlib-users

One dashboard for servers and applications across Physical-Virtual-Cloud

Widest out-of-the-box monitoring support with 50+ applications

Performance metrics, stats and reports that give you Actionable Insights

Deep dive visibility with transaction tracing using APM Insight.

http://ad.doubleclick.net/ddm/clk/290420510;117567292;y

Matplotlib-users mailing list

Matplotlib-users@lists.sourceforge.net

https://lists.sourceforge.net/lists/listinfo/matplotlib-users

8

Here is a proof of concept (yes, it uses qt4… my work computer doesn’t have qt5, but that should be a straight-forward modification to make). Note the complete lack of any call to mouse_init() and the complete lack of any use of pyplot (in fact, I commented it out to make the point that you shouldn’t use pyplot at all when doing this sort of embedding).

import numpy as np
#import matplotlib.pyplot as plt
import sys
from matplotlib.backends.qt4_compat import QtGui, QtCore
from matplotlib.figure import Figure
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas

from mpl_toolkits.mplot3d import Axes3D

if __name__ == '__main__':
    # Must come before any Qt widgets are made
    app = QtGui.QApplication(sys.argv)
    win = QtGui.QMainWindow()
    fig = Figure()
    canvas = FigureCanvas(fig)
    ax = fig.add_subplot(1, 1, 1, projection='3d')

    xs = np.random.rand(25)
    ys = np.random.rand(25)
    zs = np.random.rand(25)
    ax.scatter(xs, ys, zs)

    win.resize(int(fig.bbox.width), int(fig.bbox.height))
    win.setWindowTitle("Embedding with Qt")
    # Needed for keyboard events
    canvas.setFocusPolicy(QtCore.Qt.StrongFocus)
    canvas.setFocus()
    win.setCentralWidget(canvas)
    win.show()
    sys.exit(app.exec_())

I hope this helps!

Ben Root

···

On Wed, Apr 29, 2015 at 5:38 AM, Christian Ambros <ambrosc@…2693…> wrote:

Ok, back from revision…

The is no mix-up for the show command. The only explicit show() command is commented out in line 41. It can be deleted. But I haven’t done that, yet. There are several bits of code which are remains of the design process since this is work in progress. Code cleaning will be done when the main functionality is in place.

Back to addmpl where I embedded gui elements into the canvas. Taking out the matplotlib taskbar doesn’t change a thing as I wrote earlier, but to make sure it doesn’t bother the mainloop, it should be commented out. I may not put it back in, because I don’t see the point in needing it. It was just to see if it’s possible.

But option 2 relinquishes that control to the developer’s GUI app. You cannot use pyplot for option 2, which is what you are doing.

Is that so? In line 116 I create the canvas, which is derived from matplotlib’s backend’s FigureCanvasQTAgg and given to the QWidget at line 119. That’s the only part where both interact with each other. the rest is handle by matplotlib.

The error message says that Axes3D.figure.canvas is ‘None’ and that’s why mouse rotation is disabled.

It’s None because there is no content at that point, when it’s passed to the QWidget. It’s filled with content in line 38. So if matplotlib disables the mouse rotation by default, when the canvas is empty how do I prevent this disabling by default?

If I can’t, at what point do I have to pass the filled canvas to the QWidget? How does that impact the GUI itself?

If I can’t enable the mouse rotation by hand and I just can pass filled canvas around, do I have to build a work around with initialize it with an empty 2D canvas and replace it later with the filled 3D canvas? How’s the mouse rotation activated then?

In general, I wouldn’t have to enable the rotation if it wouldn’t be switch off for an empty canvas.

I’m going to consult your book, now, for different ways of coping with such things…

cheers,

Christian

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

On Tuesday, April 28, 2015 8:28 PM, Benjamin Root <ben.root@…1304…> wrote:

One thing I see off the bat is your addmpl() method:

    def addmpl(self, fig):
        #FigureCanvas.__init__(self, fig)
        self.canvas = FigureCanvas(fig)
       
        Axes3D.mouse_init(self, rotate_btn=1, zoom_btn=2)
        self.mplvl.addWidget(self.canvas)
        self.canvas.draw()
        self.toolbar = NavigationToolbar(self.canvas, self.mplwindow, coordinates=True)
        self.mplvl.addWidget(self.toolbar)

You are calling Axes3D.mouse_init() on the Main object (that is self). That is completely wrong. It can only be called for the 3d axes objects.

Also, what I see happening here is some mixing up of how to do embedding. There are two approaches to embedding. 1) you can embedded GUI elements into your canvas widget, or 2) you can embed your canvas widget into your GUI app. The important distinction between the two is who controls the mainloop. In option 1 (and in matplotlib in general), pyplot will create the GUI app for you automatically (it is completely transparent to you) and kicks it off upon call to show(). But option 2 relinquishes that control to the developer’s GUI app. You cannot use pyplot for option 2, which is what you are doing. Rip out all of the pyplot stuff, and instantiate the Qt5 Figure object directly, and then obtain the axes objects from the figure object via calls to add_subplot(). You shouldn’t even need to do the whole mouse_init() stuff.

I now think this has nothing to do with Qt Designer. While I don’t specifically cover qt5 in my book, I do make all of these distinctions very clear in chapter 5 of my book “Interactive Applications using Matplotlib”.

Cheers!

Ben Root

On Tue, Apr 28, 2015 at 4:03 PM, Christian Ambros <ambrosc@…2693…> wrote:

Hi Benjamin,

I would do that if my task were my private stuff, but in this case it’s work-related and my boss wants me to use the designer and he already set a deadline, which, I already knew, is set to tight. I told him before, that it would be just a try but he sold it to his boss after some pressure. You know how the bosses’ bosses are, they don’t get the idea that innovation can’t be dictated. They don’t understand the concept that software is written and doesn’t come into existence out of nothing.

Without PyQt5 it’s working fine. I got the plots and they are gorgeous, but that doesn’t help when presenting to the bosses. If I just would know how to activate the 3d-draw’s mouse action again, by hand, than it has to last just some moments for the presentation, afterwards I have the time to examine and find a more robust solution.

Thanks for the effort.

cheers,

Christian

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

On Tuesday, April 28, 2015 7:30 PM, Benjamin Root <ben.root@…878…1304…> wrote:

I think there is something wrong with the embedding code rather than there being an actual bug. I have embedded mplot3d stuff before (admittedly, not in qt5) with no problems. I haven’t had the time yet to examine your code to see what the potential issue is, though. I have also never used Qt designer, so I have no clue if there is something that it is doing that might be making things difficult.

I already know that the code you originally posted has errors in it. I would suggest first making a prototype without Qt Designer as a proof-of-concept, perhaps starting with one of our examples in the gallery?

Ben Root

On Tue, Apr 28, 2015 at 2:12 PM, Christian Ambros <ambrosc@…2693…> wrote:

Since there seems to be no progress with this issue, may I assume there isn’t any interest in it?

I took a further look around in the internet but couldn’t any solution.

It leads to an other question: How many users of matplotlib are using 3d-plots anyway? It we are just a few and there won’t be anyone who wants to embed it in PyQt5, than I can understand that this issue doesn’t concern no-one and I have to look somewhere else to find a 3d-plotting lib which is embedable.

cheers,

Christain

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

On Tuesday, April 21, 2015 1:44 PM, Benjamin Root <ben.root@…1304…> wrote:

The addmpl() method isn’t right. You created a canvas object, assigned it to self.canvas, but then tried to call FigureCanvas.init(), passing it whatever object “self” is. What class is addmpl() a part of? What does it subclass?

On Tue, Apr 21, 2015 at 7:24 AM, Christian Ambros <ambrosc@…2693…> wrote:

Hi,

I embedded Ryan’s examble for PyQt5-matplotlib use into my App but I get the following error:

/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py:1009: UserWarning: Axes3D.figure.canvas is ‘None’, mouse rotation disabled. Set canvas then call Axes3D.mouse_init().
warnings.warn(‘Axes3D.figure.canvas is 'None', mouse rotation disabled. Set canvas then call Axes3D.mouse_init().’)

From Stackoverflow, which host to question about this, I know that mouse actions are disabled when the canvas is re-initialized by whatever.

The only position I do such an operation is in here:

def addmpl(self, fig):
self.canvas = FigureCanvas(fig)
#FigureCanvas.init(self, fig)
#Axes3D.mouse_init(self)
self.mplvl.addWidget(self.canvas)
self.canvas.draw()
self.toolbar = NavigationToolbar(self.canvas, self.mplwindow, coordinates=True)
self.mplvl.addWidget(self.toolbar)

On of the Stackoverflow suggestion says, that re initializing FigureCanvas should do the trick but I’ll get:

Traceback (most recent call last):
File “./ex_0.1.py”, line 145, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 116, in addmpl
FigureCanvas.init(self, fig)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5agg.py”, line 181, in init
FigureCanvasQT.init(self, figure)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5.py”, line 237, in init
super(FigureCanvasQT, self).init(figure=figure)
TypeError: super(type, obj): obj must be an instance or subtype of type

as follow-up error message.

just using Axes3D.mouse_init() , as suggested by matplotlib itself, leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init()
TypeError: mouse_init() missing 1 required positional argument: ‘self’

adding self leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init(self)
File “/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py”, line 1002, in mouse_init
canv = self.figure.canvas
AttributeError: ‘Main’ object has no attribute ‘figure’
./ex_0.1.py &

Maybe I’m adding those lines at the wrong place, but I could fined anything useful in the matplotlib documantation, that would help me out, either.

Any thougts that might help?

Cheers,

Christian

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT

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9

I think that this SO answer may be relevant: https://stackoverflow.com/questions/18259350/embed-an-interactive-3d-plot-in-pyside/18278457#18278457

···

On Wed, Apr 29, 2015 at 5:43 AM Christian Ambros <ambrosc@…2693…> wrote:

Ok, back from revision…

The is no mix-up for the show command. The only explicit show() command is commented out in line 41. It can be deleted. But I haven’t done that, yet. There are several bits of code which are remains of the design process since this is work in progress. Code cleaning will be done when the main functionality is in place.

Back to addmpl where I embedded gui elements into the canvas. Taking out the matplotlib taskbar doesn’t change a thing as I wrote earlier, but to make sure it doesn’t bother the mainloop, it should be commented out. I may not put it back in, because I don’t see the point in needing it. It was just to see if it’s possible.

But option 2 relinquishes that control to the developer’s GUI app. You cannot use pyplot for option 2, which is what you are doing.

Is that so? In line 116 I create the canvas, which is derived from matplotlib’s backend’s FigureCanvasQTAgg and given to the QWidget at line 119. That’s the only part where both interact with each other. the rest is handle by matplotlib.

The error message says that Axes3D.figure.canvas is ‘None’ and that’s why mouse rotation is disabled.

It’s None because there is no content at that point, when it’s passed to the QWidget. It’s filled with content in line 38. So if matplotlib disables the mouse rotation by default, when the canvas is empty how do I prevent this disabling by default?

If I can’t, at what point do I have to pass the filled canvas to the QWidget? How does that impact the GUI itself?

If I can’t enable the mouse rotation by hand and I just can pass filled canvas around, do I have to build a work around with initialize it with an empty 2D canvas and replace it later with the filled 3D canvas? How’s the mouse rotation activated then?

In general, I wouldn’t have to enable the rotation if it wouldn’t be switch off for an empty canvas.

I’m going to consult your book, now, for different ways of coping with such things…

cheers,

Christian

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

On Tuesday, April 28, 2015 8:28 PM, Benjamin Root <ben.root@…1304…> wrote:

One thing I see off the bat is your addmpl() method:

    def addmpl(self, fig):
        #FigureCanvas.__init__(self, fig)
        self.canvas = FigureCanvas(fig)
       
        Axes3D.mouse_init(self, rotate_btn=1, zoom_btn=2)
        self.mplvl.addWidget(self.canvas)
        self.canvas.draw()
        self.toolbar = NavigationToolbar(self.canvas, self.mplwindow, coordinates=True)
        self.mplvl.addWidget(self.toolbar)

You are calling Axes3D.mouse_init() on the Main object (that is self). That is completely wrong. It can only be called for the 3d axes objects.

Also, what I see happening here is some mixing up of how to do embedding. There are two approaches to embedding. 1) you can embedded GUI elements into your canvas widget, or 2) you can embed your canvas widget into your GUI app. The important distinction between the two is who controls the mainloop. In option 1 (and in matplotlib in general), pyplot will create the GUI app for you automatically (it is completely transparent to you) and kicks it off upon call to show(). But option 2 relinquishes that control to the developer’s GUI app. You cannot use pyplot for option 2, which is what you are doing. Rip out all of the pyplot stuff, and instantiate the Qt5 Figure object directly, and then obtain the axes objects from the figure object via calls to add_subplot(). You shouldn’t even need to do the whole mouse_init() stuff.

I now think this has nothing to do with Qt Designer. While I don’t specifically cover qt5 in my book, I do make all of these distinctions very clear in chapter 5 of my book “Interactive Applications using Matplotlib”.

Cheers!

Ben Root

On Tue, Apr 28, 2015 at 4:03 PM, Christian Ambros <ambrosc@…2693…> wrote:

Hi Benjamin,

I would do that if my task were my private stuff, but in this case it’s work-related and my boss wants me to use the designer and he already set a deadline, which, I already knew, is set to tight. I told him before, that it would be just a try but he sold it to his boss after some pressure. You know how the bosses’ bosses are, they don’t get the idea that innovation can’t be dictated. They don’t understand the concept that software is written and doesn’t come into existence out of nothing.

Without PyQt5 it’s working fine. I got the plots and they are gorgeous, but that doesn’t help when presenting to the bosses. If I just would know how to activate the 3d-draw’s mouse action again, by hand, than it has to last just some moments for the presentation, afterwards I have the time to examine and find a more robust solution.

Thanks for the effort.

cheers,

Christian

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

On Tuesday, April 28, 2015 7:30 PM, Benjamin Root <ben.root@…1304…> wrote:

I think there is something wrong with the embedding code rather than there being an actual bug. I have embedded mplot3d stuff before (admittedly, not in qt5) with no problems. I haven’t had the time yet to examine your code to see what the potential issue is, though. I have also never used Qt designer, so I have no clue if there is something that it is doing that might be making things difficult.

I already know that the code you originally posted has errors in it. I would suggest first making a prototype without Qt Designer as a proof-of-concept, perhaps starting with one of our examples in the gallery?

Ben Root

On Tue, Apr 28, 2015 at 2:12 PM, Christian Ambros <ambrosc@…2693…> wrote:

Since there seems to be no progress with this issue, may I assume there isn’t any interest in it?

I took a further look around in the internet but couldn’t any solution.

It leads to an other question: How many users of matplotlib are using 3d-plots anyway? It we are just a few and there won’t be anyone who wants to embed it in PyQt5, than I can understand that this issue doesn’t concern no-one and I have to look somewhere else to find a 3d-plotting lib which is embedable.

cheers,

Christain

–
“A little learning never caused anyone’s head to explode!”

“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

On Tuesday, April 21, 2015 1:44 PM, Benjamin Root <ben.root@…1304…> wrote:

The addmpl() method isn’t right. You created a canvas object, assigned it to self.canvas, but then tried to call FigureCanvas.init(), passing it whatever object “self” is. What class is addmpl() a part of? What does it subclass?

On Tue, Apr 21, 2015 at 7:24 AM, Christian Ambros <ambrosc@…2693…> wrote:

Hi,

I embedded Ryan’s examble for PyQt5-matplotlib use into my App but I get the following error:

/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py:1009: UserWarning: Axes3D.figure.canvas is ‘None’, mouse rotation disabled. Set canvas then call Axes3D.mouse_init().
warnings.warn(‘Axes3D.figure.canvas is 'None', mouse rotation disabled. Set canvas then call Axes3D.mouse_init().’)

From Stackoverflow, which host to question about this, I know that mouse actions are disabled when the canvas is re-initialized by whatever.

The only position I do such an operation is in here:

def addmpl(self, fig):
self.canvas = FigureCanvas(fig)
#FigureCanvas.init(self, fig)
#Axes3D.mouse_init(self)
self.mplvl.addWidget(self.canvas)
self.canvas.draw()
self.toolbar = NavigationToolbar(self.canvas, self.mplwindow, coordinates=True)
self.mplvl.addWidget(self.toolbar)

On of the Stackoverflow suggestion says, that re initializing FigureCanvas should do the trick but I’ll get:

Traceback (most recent call last):
File “./ex_0.1.py”, line 145, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 116, in addmpl
FigureCanvas.init(self, fig)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5agg.py”, line 181, in init
FigureCanvasQT.init(self, figure)
File “/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_qt5.py”, line 237, in init
super(FigureCanvasQT, self).init(figure=figure)
TypeError: super(type, obj): obj must be an instance or subtype of type

as follow-up error message.

just using Axes3D.mouse_init() , as suggested by matplotlib itself, leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init()
TypeError: mouse_init() missing 1 required positional argument: ‘self’

adding self leads to:

Traceback (most recent call last):
File “./ex_0.1.py”, line 146, in
main(sys.argv)
File “./ex_0.1.py”, line 53, in main
mainwindow.addmpl(fig1)
File “./ex_0.1.py”, line 118, in addmpl
Axes3D.mouse_init(self)
File “/usr/local/lib/python3.4/dist-packages/mpl_toolkits/mplot3d/axes3d.py”, line 1002, in mouse_init
canv = self.figure.canvas
AttributeError: ‘Main’ object has no attribute ‘figure’
./ex_0.1.py &

Maybe I’m adding those lines at the wrong place, but I could fined anything useful in the matplotlib documantation, that would help me out, either.

Any thougts that might help?

Cheers,

Christian

–
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“Ein wenig Lernen hat noch niemandens Kopf zum Explodieren gebracht!”

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