HI folks,
anybody know how to save a canvas (MplWidget) to a png or tif file.
Seems
when I try to save the figure,
whichCanvas.canvas.ax.plot(xSlice, ySlice, 'bo', linewidth=1.5, linestyle='-')
savefig does not work for this type of object. Is there another method I
should use that I
missed?
thanks
dave
************************************************************ MplWidget
Classs ************************************************
from PyQt4 import QtGui
-
Ignored:
from matplotlib.backends.backend_qt4agg \
import FigureCanvasQTAgg as FigureCanvasfrom matplotlib.figure import Figure
class MplCanvas(FigureCanvas):
def __init__(self): self.fig = Figure() [self.ax](http://self.ax/) = self.fig.add_subplot(111) FigureCanvas.__init__(self, self.fig) FigureCanvas.setSizePolicy(self, QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding) FigureCanvas.updateGeometry(self)class MplWidget(QtGui.QWidget):
def __init__(self, parent = None): QtGui.QWidget.__init__(self, parent) self.canvas = MplCanvas() self.vbl = QtGui.QVBoxLayout() self.vbl.addWidget(self.canvas) self.setLayout(self.vbl)
···
On Tue, Feb 16, 2010 at 1:57 PM, matplotlib-users-request@lists.sourceforge.net wrote:
Send Matplotlib-users mailing list submissions to
matplotlib-users@lists.sourceforge.netTo subscribe or unsubscribe via the World Wide Web, visit
[https://lists.sourceforge.net/lists/listinfo/matplotlib-users](https://lists.sourceforge.net/lists/listinfo/matplotlib-users)or, via email, send a message with subject or body ‘help’ to
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than “Re: Contents of Matplotlib-users digest…”
Today’s Topics:
Suggestion for filtering by calendar? (David Carmean)
Re: add to a canvas while preserving overall formatting (C M)
Color in table help please! I have already searched previous
posts (duckman)
Re: DateFormatter + Latex issue (Ernest Adrogu?)
Re: Where Do I Report MPL Guide Issues? (Wayne Watson)
Re: DateFormatter + Latex issue (Filipe Pires Alvarenga Fernandes)
Re: forcing a plot to appear (Ken Dere)
Re: DateFormatter + Latex issue (Ernest Adrogu?)
Message: 1
Date: Tue, 16 Feb 2010 09:51:47 -0800
From: David Carmean <dlc@…2956…>
Subject: [Matplotlib-users] Suggestion for filtering by calendar?
To: matplotlib-users@lists.sourceforge.net
Message-ID: <20100216095147.K26855@…2956…>
Content-Type: text/plain; charset=us-ascii
I have a time-series dataset for which I need to make several plots;
some of them will use all of the data, but others need not only to
show just the usual business hours, but also take business holidays
into account. I thoght this might be sufficiently common in this
community that somebody could easily point me to a python idiom/recipe
they’ve used that I could extend to use masked arrays.
FWIW, the idea is not that I want to skip those time periods on the
visualizations–and thus the recipes which treat the data as
non-timeseries and construct custom ticks are not the solution for me.
One of the tasks will be to use a fill to shade in these “working hours”
for some of the plots. Another will be to calculate and plot running
averages that exclude non-working hours.
Thanks.
Message: 2
Date: Tue, 16 Feb 2010 14:07:04 -0500
From: C M <cmpython@…287…>
Subject: Re: [Matplotlib-users] add to a canvas while preserving
overall formattingTo: Matplotlib Users matplotlib-users@lists.sourceforge.net
Message-ID:
<cc8074371002161107w6ef0f865wdece7d0a74c61dab@...288...>Content-Type: text/plain; charset=ISO-8859-1
On Tue, Feb 16, 2010 at 12:37 PM, John Hunter <jdh2358@…287…> wrote:
On Tue, Feb 16, 2010 at 11:14 AM, C M <cmpython@…287…> wrote:
I have a mpl graph embedded in wxPython, and I call a function,
customize_plot() to do a number of things to the plot: ?adjust the
spacing around it, set the formatters, fontsizes, axis limits, set a
grid, etc.
Now I want to potentially highlight points (by adding semi-transparent
points on top of existing ones) or annotate points with user
interaction. ?If I do that, it seems I need to call canvas.draw().
But when I do that, it redraws the whole canvas and ignores some of
the formatting I laid out in customize_plot(), specifically the view
limits, and that’s not acceptable.
This isn’t accurate – calling draw will not change the view limits.
In all likelihood what is happening is that when you add you your
overlay markers, eg by calling “plot” the view limits are getting
updated. ?You can suppress this with
ax.set_autoscale_on(False)
ax.plot(overlay_markers)
fig.canvas.draw()
Thank you, that’s much easier than the animation option, which would
be more than I need to do.
Che
Message: 3
Date: Tue, 16 Feb 2010 11:15:51 -0800 (PST)
From: duckman <tduckett@…2983…>
Subject: [Matplotlib-users] Color in table help please! I have already
searched previous postsTo: matplotlib-users@lists.sourceforge.net
Message-ID: <27613553.post@…878…986…>
Content-Type: text/plain; charset=us-ascii
I am trying to make the table at the bottom and the lines the same color. I
took the code from one of the online examples and modified it to do most of
what I want but cannot get the color in the table working properly! Can
someone please help? Thank you
#!/usr/bin/env python
import matplotlib
from pylab import *
from matplotlib.colors import colorConverter
color3=(1,0,0)
axes([0.2, 0.2, 0.7, 0.6]) # leave room below the axes for the table
data = [[
100.00,349.75,171.44,625.53,134635.8,248978.4,160392.1,179662.4,123550.5],
[235998.8,99972.15,242081.6,84912.13,243705.3,247201.2,203676.4,90139.60,113332.5],
[202610.0,127785.3,182007.1,175678.0,154024.1,188675.2,166227.0,94719.93,160227.7],
[31699.09,30586.87,30587.58,33440.05,32209.72,34223.97,28250.25,32070.29,19095.30],
[84414.35,21884.88,49538.22,49200.55,42394.29,66676.73,57740.81,73549.68,48402.48],
[ 0.0,0.0,0.0,0.0,023529.88,19822.02,35243.35,34349.67,19382.45]]title(‘Title’)
colLabels = (‘Jan’, ‘Feb’, ‘Mar’, ‘Apr’, ‘May’, ‘Jun’, ‘Jul’, ‘Aug’, ‘Sep’)
rowLabels = [‘Dr %d’ % x for x in (1, 2, 3, 7, 8, 10)]
linecolor = (‘blue’,‘red’,‘green’,‘black’,‘yellow’,‘cyan’,‘magenta’)
rows = len(data)
ind = arange(len(colLabels)) # the x locations for the groups
cellText =
yoff = array([0.0] * len(colLabels)) # the bottom values for stacked bar
chart
for row in xrange(rows):
plot(arange(0,9), data[row],color=linecolor[row]) yoff = data[row] cellText.append(['%1.2f' % (x) for x in yoff])Add a table at the bottom of the axes
#title([color3])
the_table = table(cellText=cellText,
rowLabels=rowLabels, rowColours=[color3]*16, colLabels=colLabels, loc='bottom')vals = arange(0, 350000, 25000)
yticks(vals, [‘%d’ % val for val in vals])
xticks()
savefig(“tony.png”,dpi=(1024/8))
–
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Message: 4
Date: Tue, 16 Feb 2010 22:05:30 +0100
From: Ernest Adrogu? <eadrogue@…83…361…>
Subject: Re: [Matplotlib-users] DateFormatter + Latex issue
To: matplotlib-users@lists.sourceforge.net
Message-ID: <20100216210530.GA30924@…2803…>
Content-Type: text/plain; charset=us-ascii
16/02/10 @ 09:03 (-0500), thus spake Filipe Pires Alvarenga Fernandes:
Thanks Ernest, I had no idea that the DateFormatter was going to be treated
as latex as well.
Yes, all strings are processed by LaTeX.
However, escaping the \ with another \ did not worked.
I tried:
majorF = DateFormatter(“\n \n %b”)
How should I escape the \n ?
In theory, “\n \n %b” or r"\n \n %b", however only the former
seems to work in my computer.
There’s another problem: \n is not a valid LaTeX command.
I tried with \ and with \newline but neither appear to work.
\vspace{10pts} does insert whitespace, however I am not sure if
it’s the proper way of doing it…
Bye.
majorF = DateFormatter(“\n \n %b”) # problem
^^ ^^A common mistake.
You forgot to escape the "" characters.
Bye.
Ernest
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Message: 5
Date: Tue, 16 Feb 2010 13:14:45 -0800
From: Wayne Watson <sierra_mtnview@…209…>
Subject: Re: [Matplotlib-users] Where Do I Report MPL Guide Issues?
To: Philipp Bender <lists@…2935…>
Cc: matplotlib-users@lists.sourceforge.net
Message-ID: <4B7B0AC5.2000001@…209…>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Good. Thanks. Did I do the right thing by posting here? Is it the case
that all parts of the document are contributions?
On 2/15/2010 11:02 PM, Philipp Bender wrote:
When I come back tonight I will try to fix the errors for you.
SOLARIS 10 is the OS for Data Centers - provides features such as DTrace,
Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW
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–
"There is nothing so annoying as to have two people talking when you're busy interrupting." -- Mark Twain
Message: 6
Date: Tue, 16 Feb 2010 16:20:19 -0500
From: Filipe Pires Alvarenga Fernandes <ocefpaf@…287…>
Subject: Re: [Matplotlib-users] DateFormatter + Latex issue
To: matplotlib-users@lists.sourceforge.net
Message-ID:
<f6f7b8f11002161320p5008a274ica27d03e6c069ed5@...288...>Content-Type: text/plain; charset=“iso-8859-1”
“\” works for titles and label, but not for DateFormatter, but \vspace did
the trick!
Thanks again for the help.
ps: I’m new to python, but maybe there is a way to mix Latex and unicode?
as latex as well.
Yes, all strings are processed by LaTeX.
However, escaping the \ with another \ did not worked.
I tried:
majorF = DateFormatter(“\n \n %b”)
How should I escape the \n ?
In theory, “\n \n %b” or r"\n \n %b", however only the former
seems to work in my computer.
There’s another problem: \n is not a valid LaTeX command.
I tried with \ and with \newline but neither appear to work.
\vspace{10pts} does insert whitespace, however I am not sure if
it’s the proper way of doing it…
Bye.
majorF = DateFormatter(“\n \n %b”) # problem
^^ ^^A common mistake.
You forgot to escape the "" characters.
Bye.
Ernest
Thanks Ernest, I had no idea that the DateFormatter was going to be
treated
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Message: 7
Date: Tue, 16 Feb 2010 16:29:59 -0500
From: Ken Dere <kpdere@…2440…>
Subject: Re: [Matplotlib-users] forcing a plot to appear
To: matplotlib-users@lists.sourceforge.net
Message-ID: <hlf2om$8tc$1@…1760…>
Content-Type: text/plain; charset=“ISO-8859-1”
Matthias Michler wrote:
Hi Ken,
On Monday 15 February 2010 20:35:06 Ken Dere wrote:
Hi,
I am trying to develop an application that I can run inside the ipython
shell. One of my methods creates a plot, asks the user to make a choice
based on that plot, and then creates another plot that displays the
chosen set of information.
If the choices are made with a qt or wx dialogue, everything goes fine.
If I try to get the choice by asking the user to type the information
into the shell, neither plot appears until after the choice is made.
I have tried show() and draw() but neither make any difference.
I attached a script that allows to input a number via “raw_input” (after
the first figure appeared) and than opens up a second figure. I hope the
goes towards your needs.
Kind regards,
Matthias
That did the trick. I think it was problably the use of .ion() and .ioff()
that did it but I just did the whole fix and didn’t check to see what was
what.
many thanks!
–
K. Dere
Message: 8
Date: Tue, 16 Feb 2010 22:57:43 +0100
From: Ernest Adrogu? <eadrogue@…83…361…>
Subject: Re: [Matplotlib-users] DateFormatter + Latex issue
To: matplotlib-users@lists.sourceforge.net
Message-ID: <20100216215743.GA31425@…2803…>
Content-Type: text/plain; charset=us-ascii
16/02/10 @ 16:20 (-0500), thus spake Filipe Pires Alvarenga Fernandes:
“\” works for titles and label, but not for DateFormatter, but \vspace did
the trick!
Thanks again for the help.
ps: I’m new to python, but maybe there is a way to mix Latex and unicode?
Yes, the inputenc package from latex lets you use unicode.
Try adding this to your script:
plt.rc(‘text.latex’, preamble=‘\usepackage[utf]{inputenc}’)
Note that this setting is not officially supported, whatever
that means
I also like the txfonts package:
\usepackage[varg]{txfonts}
which changes the default font to Times, including the text in
mathematical expressions. It looks great.
Cheers.
Ernest
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End of Matplotlib-users Digest, Vol 45, Issue 63
