matplotlib-users Mailing List for matplotlib (Page 11)

Hi all,
sorry to spam the list a bit, but what follows is of direct interest
to a good number of matplotlib users.
Yesterday we put out here:
http://ipython.scipy.org/dist/testing/
a release candidate for IPython 0.7.4, as well as PyReadline (needed
by windows users). There is one new feature in this release which is
of particular interest to matplotlib users: the ability to hit Ctrl-C
to interrupt a long-running script or computation, even when using any
of the multithreaded backends for matplotlib (WX, GTK or QT-based).
Doing this requires ctypes (part of python 2.5 but not automatically
in 2.4), and I had to use an undocumented feature of the Python C API,
so this is a bit of a 'black hack'. On the other hand, it is
*extremely* useful to be able to stop something you didn't want to run
for long without having to completely kill your ipython session.
Since I'm not 100% sure this will really work without any glitches,
I'd greatly appreciate the testing from any willing participants here.
If this feature survives real-world beating, we'll release next week.
If the feature remains, I'm likely to change the official version
number to 0.8 to indicate a new series with asynchronous exception
support in multiple threads.
thanks,
f

Belinda,
While I'm sure you can find a way to do what you want with MPL, it 
sounds like you're really pushing the bounds of what it's designed for. 
Having been a Matlab user myself, I can see how you've gotten here, but 
I think you should consider other options.
Matplotlib is a plotting library -- it's not a gui development lib. I'd 
think about using a tool designed for the job. I don't know what you 
want the graphics of your game to look like, but depending on that, some 
suggestions:
PyGame -- good for fancy raster graphics, not so good if you have a need 
for other GUI elements -- all the typical controls, text boxes etc.
TkInter -- it has a Canvas people like a lot that gives a lot of 
flexibility.
wxPython -- The wxPython FloatCanvas (full disclosure -- it's my baby) 
could probably help you out a lot here, if you're dealing with vector 
graphics, and particularly if you want zooming and panning.
I'm sure you could do it with pyGTK or pyQT also.
Deciding between all these options is hard, they all have their 
strengths. What's best for you is a function of what the needs of your 
app are, what your future needs may be, what platforms you need to 
support, and taste.
Even if MPL is a perfect fit for your graphics, if you get beyond a 
basic "calculate and plot" app, you'll probably want to use MPL embedded 
in a GUI toolkit, TK, GTK or wx.
-Chris
-- 
Christopher Barker, Ph.D.
Oceanographer
Emergency Response Division
NOAA/NOS/OR&R (206) 526-6959 voice
7600 Sand Point Way NE (206) 526-6329 fax
Seattle, WA 98115 (206) 526-6317 main reception
Chr...@no...

Hello,
Thanks very much to everyone who helped me with this issue. I found
my LaTeX path by doing echo $PATH in a terminal window, and then
adding this line to the x11 path in my bashrc file,
PATH=/usr/local/teTeX/bin/powerpc-apple-darwin-current:$PATH; export PATH
My plots (labels included) look fine now.
Thanks again,
Adrian

On 4/5/07, belinda thom <bt...@cs...> wrote:
> My app needs to look something like this:
>
> ------
>
> create a game and display it in a matplotlib figure
>
> while game not over :
>
> if its player 1's turn, get player 1's valid mouse input,
> otherwise get player 2's
>
You need to get out of the mold of thinking about while loops with
blocking input. Instead make everything event driven and track state
variables to decide which player's mouse events to process. So
instead of getting a blocking input, simply do nothing on events
unless you are in a certain state. You can use a timer or an idle
handler for recurring processing rather than a while loop.
JDH

Hi Brian,
I wouldn't doubt that this is a path issue. The other path issues
that I've had installing python and then the requisite libraries seems
to be endless. I'm using Mac OSX.4, a Powerbook but not an
Intel-based Mac (as far as I know... its several years old).
My ~/.profile is actually empty. A while ago, I left a note in this
file that all of the terminals are controlled by the /etc/bashrc file.
 I tried sourcing this file, but to no avail.
It appears that I need to add LaTeX, dvipng, and ghostscript to my
path. I installed LaTeX and ghostscript using iInstaller and run TeX
through a front end (AlphaX) that does all of the typesetting for me,
so I'm woefully ignorant of the paths for any of these utilities. I
installed dvipng very recently, so I assume it went to the default
location. I have two questions:
1) How do I determine the paths of these utilities?
and
2) How do I add them to the PATH variable? Should I put this in a
configuration file somewhere so that I don't have to do this
repeatedly?
Thanks for the quick responses, and sorry about the ignorant questions,
Adrian
On 4/5/07, Brian Donovan <do...@mi...> wrote:
> Adrian,
>
> This may be a path issue. I have found that xterm or gnome-
> terminal are not started as login shells and therefor the .profile
> file (for bash) is not read. This caused my path to be incorrect. You
> can run 'source ~/.profile' when you start to get the paths setup
> correctly. You can also edit the X11 xinitrc to get xterm to start as
> a login shell.
>
> Brian
>
> On Apr 5, 2007, at 9:01 AM, Adrian Down wrote:
>
> > Hello,
> >
> > I am getting an error when I try to use any TeX formatting in plot
> > labels. There is an example below. I don't know if its relevant, but
> > I can only use the "latex" command in my OSX terminal. If I try
> > "latex sample.tex" in an x11 window, x11 claims no knowledge of latex.
> >
> > I have had to install two libraries and hunt down my kpathsea library,
> > and this still isn't working. Is there any easier way to achieve text
> > and math together in a label, such as "Text $\pi$" ? Thanks,
> >
> > Adrian
> >
> > In [1]: matplotlib.rc('text', usetex=True)
> >
> > In [2]: plot(arange(3), arange(3));xlabel('Text')
> > sh: line 1: latex: command not found
> > ----------------------------------------------------------------------
> > -----
> > exceptions.RuntimeError Traceback (most
> > recent call last)
> >
> > /Users/adrian/Documents/Academic/Courses/Research/Cosmo/Code/
> > <ipython console>
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/matplotlib/pylab.py
> > in plot(*args, **kwargs)
> > 3089 try:
> > 3090 ret = gca().plot(*args, **kwargs)
> > -> 3091 draw_if_interactive()
> > 3092 except:
> > 3093 hold(b)
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/IPython/genutils.py
> > in wrapper(*args, **kw)
> > 742 def wrapper(*args,**kw):
> > 743 wrapper.called = False
> > --> 744 out = func(*args,**kw)
> > 745 wrapper.called = True
> > 746 return out
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/matplotlib/backends/backend_tkagg.py
> > in draw_if_interactive()
> > 57 figManager = Gcf.get_active()
> > 58 if figManager is not None:
> > ---> 59 figManager.show()
> > 60
> > 61
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/matplotlib/backends/backend_tkagg.py
> > in show(self)
> > 303 if sys.platform=='win32' : self.window.update()
> > 304 else:
> > --> 305 self.canvas.draw()
> > 306 self._shown = True
> > 307
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/matplotlib/backends/backend_tkagg.py
> > in draw(self)
> > 152
> > 153 def draw(self):
> > --> 154 FigureCanvasAgg.draw(self)
> > 155 tkagg.blit(self._tkphoto, self.renderer._renderer,
> > colormode=2)
> > 156 self._master.update_idletasks()
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/matplotlib/backends/backend_agg.py
> > in draw(self)
> > 390
> > 391 renderer = self.get_renderer()
> > --> 392 self.figure.draw(renderer)
> > 393
> > 394 def get_renderer(self):
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/matplotlib/figure.py
> > in draw(self, renderer)
> > 542
> > 543 # render the axes
> > --> 544 for a in self.axes: a.draw(renderer)
> > 545
> > 546 # render the figure text
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/matplotlib/axes.py
> > in draw(self, renderer, inframe)
> > 1070
> > 1071 for zorder, i, a in dsu:
> > -> 1072 a.draw(renderer)
> > 1073
> > 1074 self.transData.thaw() # release the lazy objects
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/matplotlib/axis.py
> > in draw(self, renderer, *args, **kwargs)
> > 559 tick.set_label1(label)
> > 560 tick.set_label2(label)
> > --> 561 tick.draw(renderer)
> > 562 if tick.label1On and tick.label1.get_visible():
> > 563 extent = tick.label1.get_window_extent
> > (renderer)
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/matplotlib/axis.py
> > in draw(self, renderer)
> > 159 if self.tick2On: self.tick2line.draw(renderer)
> > 160
> > --> 161 if self.label1On: self.label1.draw(renderer)
> > 162 if self.label2On: self.label2.draw(renderer)
> > 163
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/matplotlib/text.py
> > in draw(self, renderer)
> > 836 def draw(self, renderer):
> > 837 self.update_coords(renderer)
> > --> 838 Text.draw(self, renderer)
> > 839 if self.get_dashlength() > 0.0:
> > 840 self.dashline.draw(renderer)
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/matplotlib/text.py
> > in draw(self, renderer)
> > 338
> > 339 return
> > --> 340 bbox, info = self._get_layout(renderer)
> > 341
> > 342 if ismath=='TeX':
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/matplotlib/text.py
> > in _get_layout(self, renderer)
> > 185 heightt += 3 # 3 pixel pad
> > 186 for line in lines:
> > --> 187 w,h = renderer.get_text_width_height(
> > 188 line, self._fontproperties,
> > ismath=self.is_math_text())
> > 189
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/matplotlib/backends/backend_agg.py
> > in get_text_width_height(self, s, prop, ismath, rgb)
> > 238 size = prop.get_size_in_points()
> > 239 texmanager = self.get_texmanager()
> > --> 240 Z = texmanager.get_rgba(s, size, self.dpi.get
> > (), rgb)
> > 241 m,n,tmp = Z.shape
> > 242 return n,m
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/matplotlib/texmanager.py
> > in get_rgba(self, tex, fontsize, dpi, rgb)
> > 327 if Z is None:
> > 328 # force=True to skip cacheing while debugging
> > --> 329 pngfile = self.make_png(tex, fontsize, dpi,
> > force=False)
> > 330 X = readpng(os.path.join(self.texcache, pngfile))
> > 331
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/matplotlib/texmanager.py
> > in make_png(self, tex, fontsize, dpi, force)
> > 242 # see get_rgba for a discussion of the background
> > 243 if force or not os.path.exists(pngfile):
> > --> 244 dvifile = self.make_dvi(tex, fontsize)
> > 245 outfile = basefile+'.output'
> > 246 command = self.get_shell_cmd('cd "%s"' %
> > self.texcache,
> >
> > /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/
> > site-packages/matplotlib/texmanager.py
> > in make_dvi(self, tex, fontsize, force)
> > 223 fh = file(outfile)
> > 224 if exit_status:
> > --> 225 raise RuntimeError('LaTeX was not able to
> > process the flowing \
> > 226 string:\n%s\nHere is the full report generated by LaTeX:
> > \n\n'% tex + fh.read())
> > 227 else: verbose.report(fh.read(), 'debug')
> >
> > RuntimeError: LaTeX was not able to process the flowing string:
> > 0ドル.0$
> > Here is the full report generated by LaTeX:
> >
> > ----------------------------------------------------------------------
> > ---
> > Take Surveys. Earn Cash. Influence the Future of IT
> > Join SourceForge.net's Techsay panel and you'll get the chance to
> > share your
> > opinions on IT & business topics through brief surveys-and earn cash
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> > page=join.php&p=sourceforge&CID=DEVDEV
> > _______________________________________________
> > Matplotlib-users mailing list
> > Mat...@li...
> > https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> >
>
> Brian Donovan
> --
> Research Assistant
> CASA ERC
> Microwave Remote Sensing Lab
> do...@mi...
>
>
>
>

Hi Adrian,
On Thursday 05 April 2007 09:01:55 am Adrian Down wrote:
> I am getting an error when I try to use any TeX formatting in plot
> labels. There is an example below. I don't know if its relevant, but
> I can only use the "latex" command in my OSX terminal. If I try
> "latex sample.tex" in an x11 window, x11 claims no knowledge of latex.
See http://www.scipy.org/Cookbook/Matplotlib/UsingTex. You need to make sure 
that latex, ghostscript and dvipng are all on your PATH.
> I have had to install two libraries and hunt down my kpathsea library,
> and this still isn't working. Is there any easier way to achieve text
> and math together in a label, such as "Text $\pi$" ? Thanks,
Usetex is currently the only way to render text that mixes regular text with 
mathtext. Also note, you should use raw strings: r"Text $\pi$", not "Text 
$\pi$"
Darren

Hello,
I am getting an error when I try to use any TeX formatting in plot
labels. There is an example below. I don't know if its relevant, but
I can only use the "latex" command in my OSX terminal. If I try
"latex sample.tex" in an x11 window, x11 claims no knowledge of latex.
I have had to install two libraries and hunt down my kpathsea library,
and this still isn't working. Is there any easier way to achieve text
and math together in a label, such as "Text $\pi$" ? Thanks,
Adrian
In [1]: matplotlib.rc('text', usetex=True)
In [2]: plot(arange(3), arange(3));xlabel('Text')
sh: line 1: latex: command not found
---------------------------------------------------------------------------
exceptions.RuntimeError Traceback (most
recent call last)
/Users/adrian/Documents/Academic/Courses/Research/Cosmo/Code/<ipython console>
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/pylab.py
in plot(*args, **kwargs)
 3089 try:
 3090 ret = gca().plot(*args, **kwargs)
-> 3091 draw_if_interactive()
 3092 except:
 3093 hold(b)
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/IPython/genutils.py
in wrapper(*args, **kw)
 742 def wrapper(*args,**kw):
 743 wrapper.called = False
--> 744 out = func(*args,**kw)
 745 wrapper.called = True
 746 return out
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/backends/backend_tkagg.py
in draw_if_interactive()
 57 figManager = Gcf.get_active()
 58 if figManager is not None:
---> 59 figManager.show()
 60
 61
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/backends/backend_tkagg.py
in show(self)
 303 if sys.platform=='win32' : self.window.update()
 304 else:
--> 305 self.canvas.draw()
 306 self._shown = True
 307
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/backends/backend_tkagg.py
in draw(self)
 152
 153 def draw(self):
--> 154 FigureCanvasAgg.draw(self)
 155 tkagg.blit(self._tkphoto, self.renderer._renderer, colormode=2)
 156 self._master.update_idletasks()
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/backends/backend_agg.py
in draw(self)
 390
 391 renderer = self.get_renderer()
--> 392 self.figure.draw(renderer)
 393
 394 def get_renderer(self):
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/figure.py
in draw(self, renderer)
 542
 543 # render the axes
--> 544 for a in self.axes: a.draw(renderer)
 545
 546 # render the figure text
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axes.py
in draw(self, renderer, inframe)
 1070
 1071 for zorder, i, a in dsu:
-> 1072 a.draw(renderer)
 1073
 1074 self.transData.thaw() # release the lazy objects
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axis.py
in draw(self, renderer, *args, **kwargs)
 559 tick.set_label1(label)
 560 tick.set_label2(label)
--> 561 tick.draw(renderer)
 562 if tick.label1On and tick.label1.get_visible():
 563 extent = tick.label1.get_window_extent(renderer)
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axis.py
in draw(self, renderer)
 159 if self.tick2On: self.tick2line.draw(renderer)
 160
--> 161 if self.label1On: self.label1.draw(renderer)
 162 if self.label2On: self.label2.draw(renderer)
 163
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/text.py
in draw(self, renderer)
 836 def draw(self, renderer):
 837 self.update_coords(renderer)
--> 838 Text.draw(self, renderer)
 839 if self.get_dashlength() > 0.0:
 840 self.dashline.draw(renderer)
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/text.py
in draw(self, renderer)
 338
 339 return
--> 340 bbox, info = self._get_layout(renderer)
 341
 342 if ismath=='TeX':
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/text.py
in _get_layout(self, renderer)
 185 heightt += 3 # 3 pixel pad
 186 for line in lines:
--> 187 w,h = renderer.get_text_width_height(
 188 line, self._fontproperties, ismath=self.is_math_text())
 189
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/backends/backend_agg.py
in get_text_width_height(self, s, prop, ismath, rgb)
 238 size = prop.get_size_in_points()
 239 texmanager = self.get_texmanager()
--> 240 Z = texmanager.get_rgba(s, size, self.dpi.get(), rgb)
 241 m,n,tmp = Z.shape
 242 return n,m
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/texmanager.py
in get_rgba(self, tex, fontsize, dpi, rgb)
 327 if Z is None:
 328 # force=True to skip cacheing while debugging
--> 329 pngfile = self.make_png(tex, fontsize, dpi, force=False)
 330 X = readpng(os.path.join(self.texcache, pngfile))
 331
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/texmanager.py
in make_png(self, tex, fontsize, dpi, force)
 242 # see get_rgba for a discussion of the background
 243 if force or not os.path.exists(pngfile):
--> 244 dvifile = self.make_dvi(tex, fontsize)
 245 outfile = basefile+'.output'
 246 command = self.get_shell_cmd('cd "%s"' % self.texcache,
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/texmanager.py
in make_dvi(self, tex, fontsize, force)
 223 fh = file(outfile)
 224 if exit_status:
--> 225 raise RuntimeError('LaTeX was not able to
process the flowing \
 226 string:\n%s\nHere is the full report generated by LaTeX:
\n\n'% tex + fh.read())
 227 else: verbose.report(fh.read(), 'debug')
RuntimeError: LaTeX was not able to process the flowing string:
0ドル.0$
Here is the full report generated by LaTeX:

>
> On Wed, 4 Apr 2007, John Hunter apparently wrote:
> > If anyone has any comments or objections to this plan, speak now.
I only switched a couple of months ago (basically because I was waiting for
numpy 1.0 and for scipy to switch) and numpy is so much nicer! (Not that I
didn't like Numeric; I couldn't have started without them!).
Starting the numpy jettison for MPL may encourage others to make the move.
They have to move eventually anyway. And I think they will be very happy in
the end.
+1 for me,
Mark

Hi Angus and the Matplotlib community,
I'm finally getting around to trying your suggestions, which at first 
blush seem like they'd do what I want, so THANKS for that!
But I'm still running into issues for which I'm uncertain how to 
proceed. I outline my stumbling blocks below, which have to do with 
what I'd like my app to do. No doubt my understanding of writing GUI- 
style code in Python/matplotlib is lacking, but it seems my app needs 
more structure than the typical usage of mouse clicks in matplotlib.
I outline my thinking below.
On Mar 23, 2007, at 6:11 PM, Angus McMorland wrote:
> ---------------------------
> from pylab import figure
>
> class gui :
> def __init__(self, callback) :
> self.f = figure()
> self.ax = self.f.add_subplot(111)
> self.ax.plot([1,2,3])
> self.data = None # valid mouse click hasn't yet happened
> def clicker(event):
> self.data = event.xdata
> if 1 <= self.data <= 3:
> callback(self.data)
> self.f.canvas.mpl_connect("button_press_event",clicker)
> print "Waiting for valid mouse click..."
>
> ----------------------------
> then in your application (or shell):
>
> def my_cb(inp):
> # processing here
> print inp
>
> g = gui(my_cb)
>
> No polling required, and you only get the valid clicks calling your
> routine. I hope that helps,
My app needs to look something like this:
------
create a game and display it in a matplotlib figure
while game not over :
 if its player 1's turn, get player 1's valid mouse input, 
otherwise get player 2's
 once we've got a valid mouse click, update game to make the 
corresponding move for the current player's turn
 update the figure to display this change
 check if someone's won or game's a draw, only upon which do we 
break out of the while
after having a result, report the answer, do some book keeping, and 
then return from the app
------
I've not been able to figure out how to unwind this app into 
something that only needs to progress when there's been a valid mouse 
click. If I understand your suggestion correctly, it seems the entire 
app should be the callback, but the processing of the clicks by the 
app is complicated.
I wonder if you mean I should massage the app so that it IS the 
callback, but its got enough state that to figure out how to execute 
the appropriate next portion of code seems like it would be a big 
mess (e.g. I'd have to write some kind of FSM whose transitions were 
mouse clicks). I might be able to make this work, but its gonna be 
ugly. It also breaks some of the OO I'd been using in other settings.
What I think I want is a way to get blocking valid mouse input. I had 
thought the Python yield statement might help me (for instance, when 
I'm supposed to get the next mouse click, I call yield and then the 
callback would somehow wake the application back up), but it is 
described in Python as being used only with generator functions, so I 
don't think that does the trick.
I'm fairly new to Python, and even more so to maptlotlib, but I've 
used matlab plenty. There, there's a ginput function that returns a 
value only when the mouse's been clicked. Obviously there's some dual- 
threading going on, but I've never had to write it myself.
I've spent several hours searching on the internet and haven't come 
up with much. One scheme that might work would be to use sockets to 
control the passing of info. But that seems overkill.
A big part of my problem from the matplotlib end is the only info 
I've been able to find on using mouse clicks are basically not app- 
based, e.g. http://www.scipy.org/Cookbook/Matplotlib/ 
Interactive_Plotting. There, the callbacks simply redraw the screen 
by labeling data or whatnot, but there's no sophisticated "main" 
program running at the same time.
Any ideas?
Thx,
--b

Hi Archana,
Archana Ganesan wrote:
> ...
> trial.py is as follows.
>
> from pylab import *
>
> x = xrange(10)
> plot(x)
> savefig("trial.png")
>
The setup.py you are using will not work, it is meant for a matplotlib 
embedded in wx, and even for that some lines are commented out.
Can you try the setup.py I sent yesterday with which I included 
simple_plot.py, which is a script using pylab as you do in your trial.py.
Werner

Simson Garfinkel wrote:
> I'm embarrassed to ask that I'm having trouble building/installing 
> matplotlib on an intel Mac.
Don't be embarassed -- it's really pretty hard!
All the various pythons (Universal, fink, darwinports, etc) for OS-X 
confuse things a lot, but I think you'll get the best support if you 
stick with the "official" framework Universal build:
http://www.python.org/download/
You can also get it from:
http://www.pythonmac.org/packages/py25-fat/index.html
The cool thing about that site is that you can get a bunch of pr-built 
compatible packages from there also.
Unfortunately, the matplotlib there right now doesn't appear to work 
with the latest wxPython. I'm not sure which wxPython version it is 
built against, but it crashed for me when used with wxPython2.8.3
The good news is, as I understand it, is the Ken McIvor patched the most 
recent MPL to use wxPython 2.8b features that allow you to build MPL 
without linking to wxPython.
Hopefully someone will do a build that works with wxPython2.8.3 and put 
it up on the pythonmac site soon. I may even do it, but I haven't needed 
to for a while, so I don't have it all set up at this point.
If you're going to built it yourself, still use the pythonmac packages 
for everything else, you'll be glad you did.
-Chris

Hi, I'm wondering if anyone has tried to build matplotlib on hpux with =
the hp compilers. I'm running on 11i and python 2.4.3. I've =
essentially built my own Makefile(s) with all of the hacks I've had to =
make to distutils but I am still not there. Any help/suggestions are =
appreciated (aside from running on a different platform or using gcc ;-)

Hii,
I get the following error.
Traceback (most recent call last):
 File "trial.py", line 1, in ?
 File "pylab.pyo", line 1, in ?
 File "matplotlib\pylab.pyo", line 203, in ?
 File "matplotlib\axes.pyo", line 16, in ?
 File "matplotlib\axis.pyo", line 19, in ?
 File "matplotlib\patches.pyo", line 42, in ?
 File "matplotlib\patches.pyo", line 79, in Patch
 File "matplotlib\cbook.pyo", line 352, in dedent
AttributeError: 'NoneType' object has no attribute 'splitlines'
If I comment it out I am getting the error.
I have installed the following:
Python 2.4.4
http://www.python.org/download/releases/2.4.4/<https://webmailapp5.cc.utexas.edu/horde-2.2.9-assign/util/go.php?url=http%3A%2F%2Fwww.python.org%2Fdownload%2Freleases%2F2.4.4%2F&Horde=8f6e082f99784a0f28d75db1d492ba0f>
wxPython runtime
win32-unicode for Python 2.4
http://www.wxpython.org/download.php<https://webmailapp5.cc.utexas.edu/horde-2.2.9-assign/util/go.php?url=http%3A%2F%2Fwww.wxpython.org%2Fdownload.php&Horde=8f6e082f99784a0f28d75db1d492ba0f>
matplotlib-0.90.0.win32-py2.4.exe
http://sourceforge.net/project/showfiles.php?group_id=80706<https://webmailapp5.cc.utexas.edu/horde-2.2.9-assign/util/go.php?url=http%3A%2F%2Fsourceforge.net%2Fproject%2Fshowfiles.php%3Fgroup_id%3D80706&Horde=8f6e082f99784a0f28d75db1d492ba0f>
numpy-1.0.1.win32-py2.4.exe
http://sourceforge.net/project/showfiles.php?group_id=1369&package_id=175103<https://webmailapp5.cc.utexas.edu/horde-2.2.9-assign/util/go.php?url=http%3A%2F%2Fsourceforge.net%2Fproject%2Fshowfiles.php%3Fgroup_id%3D1369%26package_id%3D175103&Horde=8f6e082f99784a0f28d75db1d492ba0f>
setup.py is as follows.
from distutils.core import setup
import os
from os.path import join
import shutil
import glob
import py2exe
from py2exe.build_exe import py2exe
import sys
import matplotlib
mpdir, mpfiles = matplotlib.get_py2exe_datafiles()
# cleanup dist and build directory first (for new py2exe version)
if os.path.exists("dist/prog"):
 shutil.rmtree("dist/prog")
if os.path.exists("dist/lib"):
 shutil.rmtree("dist/lib")
if os.path.exists("build"):
 shutil.rmtree("build")
#
#
# options for py2exe
options = {"py2exe": {"compressed": 1,
 "optimize": 2,
 "packages": ["encodings",
## "kinterbasdb",
 "pytz",
 "matplotlib.numerix",
## "email",
 ## "numpy"
## "PIL",
 ],
 # "includes": "matplotlib.numerix.random_array",
 "excludes": ["MySQLdb", "Tkconstants", "Tkinter",
"tcl",
 "orm.adapters.pgsql", "orm.adapters.mysql"
 ],
 "dll_excludes": ["tcl84.dll", "tk84.dll",
"wxmsw26uh_vc.dll"]
 }
 }
zipfile = r"lib\library.zip"
setup(
 classifiers = ["Copyright:: your name",
 "Development Status :: 5 Stable",
 "Intended Audience :: End User",
 "License :: Shareware",
 "Operating System :: Microsoft :: Windows 2000",
 "Operating System :: Microsoft :: Windows XP",
 "Operating System :: Microsoft :: Windows 9x",
 "Programming Language :: Python, wxPython",
 "Topic :: Home Use"
 "Natural Language :: German",
 "Natural Language :: French",
 "Natural Language :: English"],
 # windows = [wx_emb],
 console = ['trial.py'],
 options = options,
 zipfile = zipfile,
 data_files = [("lib\\matplotlibdata", mpfiles),
 matplotlib.get_py2exe_datafiles() # if you don't use the
lib option
#### ("prog\\amaradata", amaradata),
#### ("prog\\amaradata\\Schemata", amaraschemata),
#### ("prog\\", python4dll)
 ]
 )
trial.py is as follows.
from pylab import *
x = xrange(10)
plot(x)
savefig("trial.png")
Kindly help.
thank you.
Archana.
My trial.py is as follows
On 4/2/07, Werner F. Bruhin <wer...@fr...> wrote:
>
> Hi Archana,
>
> Archana Ganesan wrote:
> > Hi,
> >
> > I tried following the instructions at the py2exe site and I have also
> > uncommeneted and made it include the matplotlib.numerix package. Still
> > it doesnt seem to work. Is there any other way of compiling it into an
> > executable?
> Did you try to compile the sample I enclosed the other day? Did that
> work? If not what error are you getting.
>
> Are you using numpy or ?
>
> Provide a small sample (with no dependencies if possible) which does not
> work for you with the corresponding setup.py.
>
> Werner
>

On Wed, 4 Apr 2007, John Hunter apparently wrote: 
> If anyone has any comments or objections to this plan, speak now. 
Comment: great plan!
Cheers,
Alan Isaac

On 4/5/07, John Hunter <jd...@gm...> wrote:
> in a recent thread on the matplotlib-devel list
>
> http://thread.gmane.org/gmane.comp.python.matplotlib.devel/2646
>
> we've been discussing a plan to jettison support for the three array
> packages in matplotlib.
+1 from me. I don't use the older packages at all.
--bb

in a recent thread on the matplotlib-devel list
 http://thread.gmane.org/gmane.comp.python.matplotlib.devel/2646
we've been discussing a plan to jettison support for the three array
packages in matplotlib. There are a few good reasons for us to do
this
 * having multiple array based packages is bad for scientific
computing in python, and the numerix compatibility layer makes it
easier for us all to continue supporting all three and hinders
progress
 * there are a lot of nice features in numpy and numarray that we
cannot use internally in mpl development since we are relying on a
least common denominator compatibility layer
 * the matplotlib binaries are larger than they need to be, since we
have to compile our extension code against numpy, numarray and
numeric. It also increase compile times significantly, which can be a
pain for developers.
Our basic plan is to do a release in the next couple of weeks which,
as before, utilizes the numerix layer internally but may issue
deprecation warnings for people using numerix with Numeric or
numarray. After that, we will stop using numerix internally in
matplotlib development, though will retain the numerix layer
externally so your code which uses it will not break. As long as you
are using a fairly recent version of Numeric or numarray which
supports the array interface, your code should continue to work with
matplotlib as far as I understand. But internally, we'll be using
numpy (and you should too where possible).
So after the next release, matplotlib svn will begin to be converted
to numpy, which will probably take a while, and when it is done (say
in 6 weeks) we'll release the first numpy only mpl.
If anyone has any comments or objections to this plan, speak now.
JDH

On 4/4/07, Simon Kammerer <sim...@we...> wrote:
> Hi list,
>
> I guess it's not limited to the basemap toolkit, but it fits to explain
> my problem:
>
> I'd like to produce time series with basemap. As drawing coastlines,
> countrys etc. is expensive, but stays the same for every time step, I'd
> like to draw the basemap "background" only once and the reuse I.
This can probably be solved with the copy/blit/animate stuff described
at the end of
http://www.scipy.org/Cookbook/Matplotlib/Animations

Tim Hirzel wrote:
> Its a little tough right now that os x doesn't have one python 
> install to rule them all.
Yes it does.
 http://www.python.org/download/
-- 
Robert Kern
"I have come to believe that the whole world is an enigma, a harmless enigma
 that is made terrible by our own mad attempt to interpret it as though it had
 an underlying truth."
 -- Umberto Eco

My understanding is that currently the best way to get all these 
packages (wxpython, matplotlib, numpy, etc) running together on os x is 
via these packages:
http://pythonmac.org/packages/
at least, I can say for sure that the 2.5 builds worked without a hitch 
for me. Its a little tough right now that os x doesn't have one python 
install to rule them all. Instead, there are about 5 (not an actual 
count) ways to do it, most with gotchas.
tim
Simson Garfinkel wrote:
> Alas, tried the easy_install matplotlib. It downloaded and installed 
> matplotlib, but didn't install wx, so I got this error:
>
> >>> from pylab import *;
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ 
> python2.5/site-packages/matplotlib-0.90.0-py2.5-macosx-10.4-fat.egg/ 
> pylab.py", line 1, in <module>
> from matplotlib.pylab import *
> File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ 
> python2.5/site-packages/matplotlib-0.90.0-py2.5-macosx-10.4-fat.egg/ 
> matplotlib/pylab.py", line 222, in <module>
> new_figure_manager, draw_if_interactive, show = pylab_setup()
> File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ 
> python2.5/site-packages/matplotlib-0.90.0-py2.5-macosx-10.4-fat.egg/ 
> matplotlib/backends/__init__.py", line 24, in pylab_setup
> globals(),locals(),[backend_name])
> File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ 
> python2.5/site-packages/matplotlib-0.90.0-py2.5-macosx-10.4-fat.egg/ 
> matplotlib/backends/backend_wxagg.py", line 19, in <module>
> import wx
> ImportError: No module named wx
> >>>
>
>
> When I tried to use easy_install to install wxPython, I got this:
>
> Computer:/Users/simsong root# easy_install wxPython
> Searching for wxPython
> Reading http://cheeseshop.python.org/pypi/wxPython/
> Reading http://wxPython.org/
> Reading http://wxPython.org/download.php
> Reading http://cheeseshop.python.org/pypi/wxPython/2.6.3.2
> Best match: wxPython src-2.8.3.0
> Downloading http://prdownloads.sourceforge.net/wxpython/wxPython- 
> src-2.8.3.0.tar.bz2
> Processing wxPython-src-2.8.3.0.tar.bz2
> error: Couldn't find a setup script in /tmp/easy_install-UB-WlK/ 
> wxPython-src-2.8.3.0.tar.bz2
> Computer:/Users/simsong root#
>
> Why do we make this so hard?
>
> The wyPython page for Mac says:
>
> ========
>
> Mac OS X
>
> wxPython needs a special Mac OS X-specific build of Python, called a 
> Framework build, in order to work. Panther and Tiger include a 
> Framework build of Python 2.3, but on Jaguar you'll need to get the 
> MacPython installer from Jack's MacPython page.
> ============
> (I really can't keep track of all these cat names. )
>
> Then I need to choose one of 8 different versions to install, 
> dependin gon whether I am using py2.3, 2.4 or 2.5, and whether I want 
> unicode or ansi, and whether I want PPC or Universal.
>
> But I finally got it installed. Thanks.
>
>
> On Apr 4, 2007, at 7:38 AM, Edin Salkovic wrote:
>
> 
>> On 4/4/07, Simson Garfinkel <si...@ac...> wrote:
>> 
>>> 2. How do I install an EGG file?
>>> 
>> For detailed instructions about eggs see:
>> http://peak.telecommunity.com/DevCenter/EasyInstall
>>
>> Quick instructions:
>> Download:
>> http://peak.telecommunity.com/dist/ez_setup.py
>> and run it.
>>
>> then run
>> easy_install matplotlib
>> or
>> easy_install /path/to/matplotlib-xxx.egg
>>
>>
>> HTH,
>> Edin
>>
>> 
>
>
>
>
> -------------------------------------------------------------------------
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to share your
> opinions on IT & business topics through brief surveys-and earn cash
> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>
> 

Alas, tried the easy_install matplotlib. It downloaded and installed 
matplotlib, but didn't install wx, so I got this error:
 >>> from pylab import *;
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
 File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ 
python2.5/site-packages/matplotlib-0.90.0-py2.5-macosx-10.4-fat.egg/ 
pylab.py", line 1, in <module>
 from matplotlib.pylab import *
 File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ 
python2.5/site-packages/matplotlib-0.90.0-py2.5-macosx-10.4-fat.egg/ 
matplotlib/pylab.py", line 222, in <module>
 new_figure_manager, draw_if_interactive, show = pylab_setup()
 File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ 
python2.5/site-packages/matplotlib-0.90.0-py2.5-macosx-10.4-fat.egg/ 
matplotlib/backends/__init__.py", line 24, in pylab_setup
 globals(),locals(),[backend_name])
 File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ 
python2.5/site-packages/matplotlib-0.90.0-py2.5-macosx-10.4-fat.egg/ 
matplotlib/backends/backend_wxagg.py", line 19, in <module>
 import wx
ImportError: No module named wx
 >>>
When I tried to use easy_install to install wxPython, I got this:
Computer:/Users/simsong root# easy_install wxPython
Searching for wxPython
Reading http://cheeseshop.python.org/pypi/wxPython/
Reading http://wxPython.org/
Reading http://wxPython.org/download.php
Reading http://cheeseshop.python.org/pypi/wxPython/2.6.3.2
Best match: wxPython src-2.8.3.0
Downloading http://prdownloads.sourceforge.net/wxpython/wxPython- 
src-2.8.3.0.tar.bz2
Processing wxPython-src-2.8.3.0.tar.bz2
error: Couldn't find a setup script in /tmp/easy_install-UB-WlK/ 
wxPython-src-2.8.3.0.tar.bz2
Computer:/Users/simsong root#
Why do we make this so hard?
The wyPython page for Mac says:
========
Mac OS X
wxPython needs a special Mac OS X-specific build of Python, called a 
Framework build, in order to work. Panther and Tiger include a 
Framework build of Python 2.3, but on Jaguar you'll need to get the 
MacPython installer from Jack's MacPython page.
============
(I really can't keep track of all these cat names. )
Then I need to choose one of 8 different versions to install, 
dependin gon whether I am using py2.3, 2.4 or 2.5, and whether I want 
unicode or ansi, and whether I want PPC or Universal.
But I finally got it installed. Thanks.
On Apr 4, 2007, at 7:38 AM, Edin Salkovic wrote:
> On 4/4/07, Simson Garfinkel <si...@ac...> wrote:
>> 2. How do I install an EGG file?
>
> For detailed instructions about eggs see:
> http://peak.telecommunity.com/DevCenter/EasyInstall
>
> Quick instructions:
> Download:
> http://peak.telecommunity.com/dist/ez_setup.py
> and run it.
>
> then run
> easy_install matplotlib
> or
> easy_install /path/to/matplotlib-xxx.egg
>
>
> HTH,
> Edin
>

On Wed, 2007年04月04日 at 16:26 +0200, David Fokkema wrote:
> Hi group,
> 
> I have the following ipython 'session':
> 
> In [23]: data = [0, 0.4, 0.6, 1, 2, 3]
> 
> In [24]: bins = [0, 1, 2, 3]
> 
> In [25]: hist(data, bins, align='edge')
> Out[25]: (array([3, 1, 1, 1]), [0, 1, 2, 3], <a list of 4 Patch
> objects>)
> 
> In [26]: hist(data, bins, align='center')
> Out[26]: (array([3, 1, 1, 1]), [0, 1, 2, 3], <a list of 4 Patch
> objects>)
> 
> 
> I would suspect that the histogram output from 'center' should be [2, 2,
> 1, 1]. Why is this not so? At least, the two should be different? I
> would say that with edge, my bins would be 0-1, 1-2, 2-3, 3-4, and that
> center should give me -0.5-0.5, 0.5-1.5, 1.5-2.5, 2.5-3.5, but this
> seems not to be the case??? Any help understanding this would be greatly
> appreciated!
It seems that the hist function simply calls matplotlib.mlab.hist
without any regard to the bins (be they edge or centered values) and
passes the plotting through to the 'bar' function. This function places
the bar with either the edge at the bin value or the center at the bin
value. If I choose center, the result is that my histogram is calculated
for edge values but the bars are placed at center values which is
completely misleading and wrong! I'd say this is a bug, but I may be
overlooking something here...
Thanks,
David
> 
> Thanks,
> 
> David
> 
> 
> -------------------------------------------------------------------------
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to share your
> opinions on IT & business topics through brief surveys-and earn cash
> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> 

Hi group,
I have the following ipython 'session':
In [23]: data = [0, 0.4, 0.6, 1, 2, 3]
In [24]: bins = [0, 1, 2, 3]
In [25]: hist(data, bins, align='edge')
Out[25]: (array([3, 1, 1, 1]), [0, 1, 2, 3], <a list of 4 Patch
objects>)
In [26]: hist(data, bins, align='center')
Out[26]: (array([3, 1, 1, 1]), [0, 1, 2, 3], <a list of 4 Patch
objects>)
I would suspect that the histogram output from 'center' should be [2, 2,
1, 1]. Why is this not so? At least, the two should be different? I
would say that with edge, my bins would be 0-1, 1-2, 2-3, 3-4, and that
center should give me -0.5-0.5, 0.5-1.5, 1.5-2.5, 2.5-3.5, but this
seems not to be the case??? Any help understanding this would be greatly
appreciated!
Thanks,
David

On 4/4/07, Simson Garfinkel <si...@ac...> wrote:
> 2. How do I install an EGG file?
For detailed instructions about eggs see:
http://peak.telecommunity.com/DevCenter/EasyInstall
Quick instructions:
Download:
http://peak.telecommunity.com/dist/ez_setup.py
and run it.
then run
easy_install matplotlib
or
easy_install /path/to/matplotlib-xxx.egg
HTH,
Edin

Hi list,
I guess it's not limited to the basemap toolkit, but it fits to explain 
my problem:
I'd like to produce time series with basemap. As drawing coastlines, 
countrys etc. is expensive, but stays the same for every time step, I'd 
like to draw the basemap "background" only once and the reuse I.
copy / deepcopy (module copy) the current axes doesn't work:
copy.Error: un(deep)copyable object of type <type 'Affine'>
Creating two identical axes with different label='XXX' doesn't work, 
because contourf will overwrite my background.
Same for adding a subplot to my figure.
Whats the way to "clone" an axes instance (or any other form of my 
background), so I can reuse it after I plotted the first time step and 
then called cla()?
Thanks
Simon

I'm embarrassed to ask that I'm having trouble building/installing 
matplotlib on an intel Mac.
The version at http://matplotlib.sourceforge.net/ wants to give me 
an .egg file for my Mac, and I have yet to figure out how to load and 
install .egg files. (How come python is such a mess?)
So I tried to install with darwinports. Darwinports proceeded to 
upgrade my python from 2.4 to 2.5 (thanks!) and then gave me an error 
installing numeric because the fortran compiler wouldn't build or 
something.
So I manually installed numeric (I don't need fortran support) and 
manually downloaded matplotlib to install with setup.py. But I'm 
getting this error:
building 'matplotlib.backends._tkagg' extension
g++ -arch i386 -arch ppc -isysroot /Developer/SDKs/MacOSX10.4u.sdk -g 
-bundle -undefined dynamic_lookup build/temp.macosx-10.3-fat-2.5/src/ 
_tkagg.o build/temp.macosx-10.3-fat-2.5/CXX/cxx_extensions.o build/ 
temp.macosx-10.3-fat-2.5/CXX/cxxsupport.o build/temp.macosx-10.3- 
fat-2.5/CXX/IndirectPythonInterface.o build/temp.macosx-10.3-fat-2.5/ 
CXX/cxxextensions.o -L/usr/local/lib -L/usr/lib -L/usr/local/lib -L/ 
usr/lib -lpng -lz -lstdc++ -lm -lfreetype -lz -lstdc++ -lm -o build/ 
lib.macosx-10.3-fat-2.5/matplotlib/backends/_tkagg.so -framework Tcl - 
framework Tk
/usr/bin/ld: for/usr/bin/ld: for architecture ppc
/usr/bin/ld: can't locate file for: -lpng
collect2: ld returned 1 exit status
architecture i386
/usr/bin/ld: can't locate file for: -lpng
collect2: ld returned 1 exit status
lipo: can't open input file: /var/tmp//ccl92wxW.out (No such file or 
directory)
error: command 'g++' failed with exit status 1
Computer:/Users/simsong/Desktop/matplotlib-0.90.0 root#
This basically says that it can't build the universal version on my 
mac because I only have intel binaries for libpng, and not universal 
binaries.
I don't need universal binaries; I'm only running on intel.
I'd rather not go down this path, it turns out. It would be a lot 
easier for me just to download binaries.
What I would like to know is:
1. What is the preferred way for installing matplotlib on Mac at this 
point?
2. How do I install an EGG file?
Thanks!