Subplots, multiple bar3d plots + titling

Community matplotlib-users
1

Greetings,

I would like to plot to make a figure with 3 subplots
of the form (221) to (223):
  - each subplot should show a bar3d plot of a matrix
  - each subplot should have it's own title

The problems:
a) I don't see (nor did i find something) how i can
    use subplots combined with bar3d (from the mpl_toolkits.mplot3d)
    package.

b) I don't manage to give the 3d bar plot a title. In the attached
    code you will see that a title is set, but it does not show
    up in the figure

Could someone please help me out with these problems?

Thanks,
q

···

---------------------

The code for the basic plot of the matrix:

from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
from matplotlib.ticker import FixedFormatter, LinearLocator, FixedLocator
from numpy import *

psi=1/sqrt(2)*array([1, 0, 0, 1])
rho=outer(psi,psi)

fig = plt.figure()

ax = Axes3D(fig)

elements = (len(rho) * len(rho))
xpos, ypos = meshgrid(array(range(len(rho)))+0.25, array(range(len(rho)))+0.25)

xpos = xpos.flatten()
ypos = ypos.flatten()
zpos = zeros(elements)

dx = 0.5 * ones_like(zpos)
dy = dx.copy()
dz = absolute(rho.flatten())

ax.set_title('absolute')

ax.bar3d(xpos, ypos, zpos, dx, dy, dz, color='#F8F800')

plt.show()

2

I’m not sure its possible right now to do subplots with 3D.

As for the title, I cannot either put titles on any 3D graphs…

2009/9/28 <qubax@…1843…>

···

Greetings,

I would like to plot to make a figure with 3 subplots

of the form (221) to (223):

  • each subplot should show a bar3d plot of a matrix

  • each subplot should have it’s own title

The problems:

a) I don’t see (nor did i find something) how i can

use subplots combined with bar3d (from the mpl_toolkits.mplot3d)

package.

b) I don’t manage to give the 3d bar plot a title. In the attached

code you will see that a title is set, but it does not show

up in the figure

Could someone please help me out with these problems?

Thanks,

q

The code for the basic plot of the matrix:

from mpl_toolkits.mplot3d import Axes3D

import matplotlib.pyplot as plt

from matplotlib.ticker import FixedFormatter, LinearLocator, FixedLocator

from numpy import *

psi=1/sqrt(2)*array([1, 0, 0, 1])

rho=outer(psi,psi)

fig = plt.figure()

ax = Axes3D(fig)

elements = (len(rho) * len(rho))

xpos, ypos = meshgrid(array(range(len(rho)))+0.25, array(range(len(rho)))+0.25)

xpos = xpos.flatten()

ypos = ypos.flatten()

zpos = zeros(elements)

dx = 0.5 * ones_like(zpos)

dy = dx.copy()

dz = absolute(rho.flatten())

ax.set_title(‘absolute’)

ax.bar3d(xpos, ypos, zpos, dx, dy, dz, color=‘#F8F800’)

plt.show()

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3

Try below instead of Axes3D. Obviously, "131" is the geometry
parameter for subplot command. You don't need to add "ax" to "fig"
since Axes3D do that by itself.

from matplotlib.axes import subplot_class_factory
Subplot3D = subplot_class_factory(Axes3D)

ax = Subplot3D(fig, 131)

This will show you the title also. However, the 3d axes will occupy
smaller area than the area of the subplot.

Regards,

-JJ

···

On Mon, Sep 28, 2009 at 6:23 PM, <qubax@...1843...> wrote:

Greetings,

I would like to plot to make a figure with 3 subplots
of the form (221) to (223):
- each subplot should show a bar3d plot of a matrix
- each subplot should have it's own title

The problems:
a) I don't see (nor did i find something) how i can
use subplots combined with bar3d (from the mpl_toolkits.mplot3d)
package.

b) I don't manage to give the 3d bar plot a title. In the attached
code you will see that a title is set, but it does not show
up in the figure

Could someone please help me out with these problems?

Thanks,
q

---------------------

The code for the basic plot of the matrix:

from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
from matplotlib.ticker import FixedFormatter, LinearLocator, FixedLocator
from numpy import *

psi=1/sqrt(2)*array([1, 0, 0, 1])
rho=outer(psi,psi)

fig = plt.figure()

ax = Axes3D(fig)

elements = (len(rho) * len(rho))
xpos, ypos = meshgrid(array(range(len(rho)))+0.25, array(range(len(rho)))+0.25)

xpos = xpos.flatten()
ypos = ypos.flatten()
zpos = zeros(elements)

dx = 0.5 * ones_like(zpos)
dy = dx.copy()
dz = absolute(rho.flatten())

ax.set_title('absolute')

ax.bar3d(xpos, ypos, zpos, dx, dy, dz, color='#F8F800')

plt.show()

------------------------------------------------------------------------------
Come build with us! The BlackBerry&reg; Developer Conference in SF, CA
is the only developer event you need to attend this year. Jumpstart your
developing skills, take BlackBerry mobile applications to market and stay
ahead of the curve. Join us from November 9&#45;12, 2009. Register now&#33;
http://p.sf.net/sfu/devconf
_______________________________________________
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4

Thanks,

that works like a charm.

final bonus question: How can i individually set the point of view/zoom level
for the different 3d subplots?

Currently, when i rotate/zoom (with the mouse) in one subplot, the changes
are applied on all 3d subplots.

Thanks again,
q

···

On Mon, Sep 28, 2009 at 11:52:08PM -0400, Jae-Joon Lee wrote:

Try below instead of Axes3D. Obviously, "131" is the geometry
parameter for subplot command. You don't need to add "ax" to "fig"
since Axes3D do that by itself.

from matplotlib.axes import subplot_class_factory
Subplot3D = subplot_class_factory(Axes3D)

ax = Subplot3D(fig, 131)

This will show you the title also. However, the 3d axes will occupy
smaller area than the area of the subplot.

Regards,

-JJ

On Mon, Sep 28, 2009 at 6:23 PM, <qubax@...1843...> wrote:
> Greetings,
>
> I would like to plot to make a figure with 3 subplots
> of the form (221) to (223):
> �- each subplot should show a bar3d plot of a matrix
> �- each subplot should have it's own title
>
> The problems:
> �a) I don't see (nor did i find something) how i can
> � �use subplots combined with bar3d (from the mpl_toolkits.mplot3d)
> � �package.
>
> �b) I don't manage to give the 3d bar plot a title. In the attached
> � �code you will see that a title is set, but it does not show
> � �up in the figure
>
> Could someone please help me out with these problems?
>
> Thanks,
> q
>
> ---------------------
>
> The code for the basic plot of the matrix:
>
>
> from mpl_toolkits.mplot3d import Axes3D
> import matplotlib.pyplot as plt
> from matplotlib.ticker import FixedFormatter, LinearLocator, FixedLocator
> from numpy import *
>
> psi=1/sqrt(2)*array([1, 0, 0, 1])
> rho=outer(psi,psi)
>
> fig = plt.figure()
>
> ax = Axes3D(fig)
>
> elements = (len(rho) * len(rho))
> xpos, ypos = meshgrid(array(range(len(rho)))+0.25, array(range(len(rho)))+0.25)
>
> xpos = xpos.flatten()
> ypos = ypos.flatten()
> zpos = zeros(elements)
>
> dx = 0.5 * ones_like(zpos)
> dy = dx.copy()
> dz = absolute(rho.flatten())
>
> ax.set_title('absolute')
>
> ax.bar3d(xpos, ypos, zpos, dx, dy, dz, color='#F8F800')
>
> plt.show()
>
>
>
> ------------------------------------------------------------------------------
> Come build with us! The BlackBerry&reg; Developer Conference in SF, CA
> is the only developer event you need to attend this year. Jumpstart your
> developing skills, take BlackBerry mobile applications to market and stay
> ahead of the curve. Join us from November 9&#45;12, 2009. Register now&#33;
> http://p.sf.net/sfu/devconf
> _______________________________________________
> Matplotlib-users mailing list
> Matplotlib-users@lists.sourceforge.net
> matplotlib-users List Signup and Options
>

--
The king who needs to remind his people of his rank, is no king.

To gain that which is worth having, it may be necessary to lose everything else.

5

Hmm, axes3d does not seem to support it currently. I hope Reinier or
others confirm this.
Anyhow, here is a quick workaround you may try.

from matplotlib.axes import subplot_class_factory

class MyAxes3D(Axes3D):
    def _button_press(self, event):
        if event.inaxes == self:
            Axes3D._button_press(self, event)

Subplot3D = subplot_class_factory(MyAxes3D)

This makes rotate/zoom is effective only in the axes where the initial
button-press event occurred.

While I think it is reasonable to have Subplot3D and above fix in
place, I'll defer this to Reinier or others who better know how Axes3D
works.

Regards,

-JJ

···

On Tue, Sep 29, 2009 at 6:22 AM, <qubax@...1843...> wrote:

Thanks,

that works like a charm.

final bonus question: How can i individually set the point of view/zoom level
for the different 3d subplots?

Currently, when i rotate/zoom (with the mouse) in one subplot, the changes
are applied on all 3d subplots.

Thanks again,
q

On Mon, Sep 28, 2009 at 11:52:08PM -0400, Jae-Joon Lee wrote:

Try below instead of Axes3D. Obviously, "131" is the geometry
parameter for subplot command. You don't need to add "ax" to "fig"
since Axes3D do that by itself.

from matplotlib.axes import subplot_class_factory
Subplot3D = subplot_class_factory(Axes3D)

ax = Subplot3D(fig, 131)

This will show you the title also. However, the 3d axes will occupy
smaller area than the area of the subplot.

Regards,

-JJ

On Mon, Sep 28, 2009 at 6:23 PM, <qubax@...1843...> wrote:
> Greetings,
>
> I would like to plot to make a figure with 3 subplots
> of the form (221) to (223):
> - each subplot should show a bar3d plot of a matrix
> - each subplot should have it's own title
>
> The problems:
> a) I don't see (nor did i find something) how i can
> use subplots combined with bar3d (from the mpl_toolkits.mplot3d)
> package.
>
> b) I don't manage to give the 3d bar plot a title. In the attached
> code you will see that a title is set, but it does not show
> up in the figure
>
> Could someone please help me out with these problems?
>
> Thanks,
> q
>
> ---------------------
>
> The code for the basic plot of the matrix:
>
>
> from mpl_toolkits.mplot3d import Axes3D
> import matplotlib.pyplot as plt
> from matplotlib.ticker import FixedFormatter, LinearLocator, FixedLocator
> from numpy import *
>
> psi=1/sqrt(2)*array([1, 0, 0, 1])
> rho=outer(psi,psi)
>
> fig = plt.figure()
>
> ax = Axes3D(fig)
>
> elements = (len(rho) * len(rho))
> xpos, ypos = meshgrid(array(range(len(rho)))+0.25, array(range(len(rho)))+0.25)
>
> xpos = xpos.flatten()
> ypos = ypos.flatten()
> zpos = zeros(elements)
>
> dx = 0.5 * ones_like(zpos)
> dy = dx.copy()
> dz = absolute(rho.flatten())
>
> ax.set_title('absolute')
>
> ax.bar3d(xpos, ypos, zpos, dx, dy, dz, color='#F8F800')
>
> plt.show()
>
>
>
> ------------------------------------------------------------------------------
> Come build with us! The BlackBerry&reg; Developer Conference in SF, CA
> is the only developer event you need to attend this year. Jumpstart your
> developing skills, take BlackBerry mobile applications to market and stay
> ahead of the curve. Join us from November 9&#45;12, 2009. Register now&#33;
> http://p.sf.net/sfu/devconf
> _______________________________________________
> Matplotlib-users mailing list
> Matplotlib-users@lists.sourceforge.net
> matplotlib-users List Signup and Options
>

--
The king who needs to remind his people of his rank, is no king.

To gain that which is worth having, it may be necessary to lose everything else.

6

Hi,

I will have a look at mplot3d sub-plots next weekend and try to fix
issues like this. I'll also add a working example.

Cheers,
Reinier

···

On Tue, Sep 29, 2009 at 5:05 PM, Jae-Joon Lee <lee.j.joon@...287...> wrote:

Hmm, axes3d does not seem to support it currently. I hope Reinier or
others confirm this.
Anyhow, here is a quick workaround you may try.

from matplotlib.axes import subplot_class_factory

class MyAxes3D(Axes3D):
def _button_press(self, event):
if event.inaxes == self:
Axes3D._button_press(self, event)

Subplot3D = subplot_class_factory(MyAxes3D)

This makes rotate/zoom is effective only in the axes where the initial
button-press event occurred.

While I think it is reasonable to have Subplot3D and above fix in
place, I'll defer this to Reinier or others who better know how Axes3D
works.

Regards,

-JJ

On Tue, Sep 29, 2009 at 6:22 AM, <qubax@...1843...> wrote:

Thanks,

that works like a charm.

final bonus question: How can i individually set the point of view/zoom level
for the different 3d subplots?

Currently, when i rotate/zoom (with the mouse) in one subplot, the changes
are applied on all 3d subplots.

Thanks again,
q

On Mon, Sep 28, 2009 at 11:52:08PM -0400, Jae-Joon Lee wrote:

Try below instead of Axes3D. Obviously, "131" is the geometry
parameter for subplot command. You don't need to add "ax" to "fig"
since Axes3D do that by itself.

from matplotlib.axes import subplot_class_factory
Subplot3D = subplot_class_factory(Axes3D)

ax = Subplot3D(fig, 131)

This will show you the title also. However, the 3d axes will occupy
smaller area than the area of the subplot.

Regards,

-JJ

On Mon, Sep 28, 2009 at 6:23 PM, <qubax@...1843...> wrote:
> Greetings,
>
> I would like to plot to make a figure with 3 subplots
> of the form (221) to (223):
> - each subplot should show a bar3d plot of a matrix
> - each subplot should have it's own title
>
> The problems:
> a) I don't see (nor did i find something) how i can
> use subplots combined with bar3d (from the mpl_toolkits.mplot3d)
> package.
>
> b) I don't manage to give the 3d bar plot a title. In the attached
> code you will see that a title is set, but it does not show
> up in the figure
>
> Could someone please help me out with these problems?
>
> Thanks,
> q
>
> ---------------------
>
> The code for the basic plot of the matrix:
>
>
> from mpl_toolkits.mplot3d import Axes3D
> import matplotlib.pyplot as plt
> from matplotlib.ticker import FixedFormatter, LinearLocator, FixedLocator
> from numpy import *
>
> psi=1/sqrt(2)*array([1, 0, 0, 1])
> rho=outer(psi,psi)
>
> fig = plt.figure()
>
> ax = Axes3D(fig)
>
> elements = (len(rho) * len(rho))
> xpos, ypos = meshgrid(array(range(len(rho)))+0.25, array(range(len(rho)))+0.25)
>
> xpos = xpos.flatten()
> ypos = ypos.flatten()
> zpos = zeros(elements)
>
> dx = 0.5 * ones_like(zpos)
> dy = dx.copy()
> dz = absolute(rho.flatten())
>
> ax.set_title('absolute')
>
> ax.bar3d(xpos, ypos, zpos, dx, dy, dz, color='#F8F800')
>
> plt.show()
>
>
>
> ------------------------------------------------------------------------------
> Come build with us! The BlackBerry&reg; Developer Conference in SF, CA
> is the only developer event you need to attend this year. Jumpstart your
> developing skills, take BlackBerry mobile applications to market and stay
> ahead of the curve. Join us from November 9&#45;12, 2009. Register now&#33;
> http://p.sf.net/sfu/devconf
> _______________________________________________
> Matplotlib-users mailing list
> Matplotlib-users@lists.sourceforge.net
> matplotlib-users List Signup and Options
>

--
The king who needs to remind his people of his rank, is no king.

To gain that which is worth having, it may be necessary to lose everything else.

------------------------------------------------------------------------------
Come build with us! The BlackBerry&reg; Developer Conference in SF, CA
is the only developer event you need to attend this year. Jumpstart your
developing skills, take BlackBerry mobile applications to market and stay
ahead of the curve. Join us from November 9&#45;12, 2009. Register now&#33;
http://p.sf.net/sfu/devconf
_______________________________________________
Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
matplotlib-users List Signup and Options

--
Reinier Heeres
Tel: +31 6 10852639