matplotlib-users Mailing List for matplotlib

On Tue, 2004年03月16日 at 07:29, John Hunter wrote:
> >>>>> "Gary" == Gary Pajer <pa...@in...> writes:
> 
> Gary> I've been poking aroung a bit trying to see if I can locate
> Gary> my plots in a frame in my own Tkinter GUI rather than a
> Gary> stand-alone window.
> 
> Gary> It looks like it might be possible if I can, for example,
> Gary> extract the frame instance from a TkAgg plot (or something
> Gary> like that)
> 
> Gary> Can anyone comment or suggest a route?
> 
First an apology. I didn't see this until late yesterday when Perry
alerted me. I wasn't subscribed to matplotlib-users.
> Todd, is this easily doable? 
Frankly, I'm not sure. I'll try to work it out this afternoon. I
imagine if it's possible in GTK it's possible in Tk.
> Could you write an embedding_in_tk.py
> example along the lines of embedding_in_gtk and embedding_in_wx?
I'll try and let you know.
> 
> The FigureCanvas derived instance in backend_* is meant to be a widget
> you could plug into a GUI, but I notice you took a different tack in
> backend_tkagg. The idea behind this is that users may want to embed a
> figure as part of a GUI window, eg in a widget container, without
> necessarily bringing the toolbar along or using the whole window.
> Would this be an easy refactoring of backend_tkagg?
We'll see.
Regards,
Todd
-- 
Todd Miller <jm...@st...>

What's new in matplotlib-0.52
Image support
 Basic image support. Images can be specified by Numeric float arrays
 imshow(X)
 If X is MxN, assume luminance (grayscale)
 If X is MxNx3, assume RGB
 If X is MxNx4, assume RGBA
 imshow(X, cmap) # plot X using colormap; see examples/pcolor_demo2.py
 see help(imshow) and the image_demo*.py examples in the matplotlib
 src distribution. Set BUILD_IMAGE in setup.py for image
 support. Currently available on Agg, GTKAgg, TkAgg and GTK
 backends. win32 GTK users should use GTKAgg unless your pygtk is
 compiled with Numeric support.
 The pseudocolor images generated with imshow are 8 million times
 faster than pcolors.
Figure legends
 In addition to adding legends to the axes with the legend command,
 you can place legends anywhere in the figure with figlegend
fill command
 Andrew Straw wrote a fill command to plot filled polygons. See
 fill_demo.py
Make 2D spectrograms with specgram. 
 Requires image support; see specgram_demo.py 
Bugfixes and minor improvements
 * Tk : Fixed a close figure bug in interactive mode
 * GTK : Much improved mathtext performance thanks to patch by
 Trevor Blackwell
 * All : Fixed a bug that showed up in successive calls to plot
 with just one plot argument
Downloads at
https://sourceforge.net/project/showfiles.php?group_id=80706&package_id=82474&release_id=224080

>>>>> "matthew" == matthew arnison <ma...@ca...> writes:
 matthew> I can't seem to get multiple plots to draw on the same
 matthew> figure under TkAgg. In the below example, the cos()
 matthew> doesn't show up, and the tan produces an error. This
 matthew> seems to be repeatable for arbitrary cases of trying to
 matthew> plot 2 or 3 lines together on the one plot.
Found and fixed. This crept into the functions that process plot
arguments when I added matplotlibrc support there. In axes.py, search
for def _plot_1_arg and replace the first part of it with
 def _plot_1_arg(self, y, **kwargs):
 if self.count==0:
 color = self.firstColor
 else:
 color = self.colors[int(self.count % self.Ncolors)]
 ^^^ this is the critical part
 matthew> Cheers and thanks for matplotlib, Matthew.
Thanks for the bug report!
JDH

>>>>> "Gary" == Gary Pajer <pa...@in...> writes:
 Gary> I've been poking aroung a bit trying to see if I can locate
 Gary> my plots in a frame in my own Tkinter GUI rather than a
 Gary> stand-alone window.
 Gary> It looks like it might be possible if I can, for example,
 Gary> extract the frame instance from a TkAgg plot (or something
 Gary> like that)
 Gary> Can anyone comment or suggest a route?
Todd, is this easily doable? Could you write an embedding_in_tk.py
example along the lines of embedding_in_gtk and embedding_in_wx?
The FigureCanvas derived instance in backend_* is meant to be a widget
you could plug into a GUI, but I notice you took a different tack in
backend_tkagg. The idea behind this is that users may want to embed a
figure as part of a GUI window, eg in a widget container, without
necessarily bringing the toolbar along or using the whole window.
Would this be an easy refactoring of backend_tkagg?
Thanks,
JDH

I can't seem to get multiple plots to draw on the same figure under TkAgg. 
In the below example, the cos() doesn't show up, and the tan produces an
error. This seems to be repeatable for arbitrary cases of trying to plot
2 or 3 lines together on the one plot.
Cheers and thanks for matplotlib,
Matthew.
$ python
Python 2.2.2 (#1, Feb 24 2003, 19:13:11)
[GCC 3.2.2 20030222 (Red Hat Linux 3.2.2-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from matplotlib.matlab import *
>>> xx = arange(0, 3, 0.1)
>>> plot(sin(xx))
[<matplotlib.lines.Line2D instance at 0x819613c>]
>>> plot(cos(xx))
[<matplotlib.lines.Line2D instance at 0x8636444>]
>>> plot(tan(xx))
Traceback (most recent call last):
 File "<stdin>", line 1, in ?
 File "/usr/lib/python2.2/site-packages/matplotlib/matlab.py", line 788, 
in plot
 draw_if_interactive()
 File 
"/usr/lib/python2.2/site-packages/matplotlib/backends/backend_tkagg.py",
line 46, in draw_if_interactive
 figManager.show()
 File 
"/usr/lib/python2.2/site-packages/matplotlib/backends/backend_tkagg.py",
line 127, in show
 self.canvas.draw()
 File 
"/usr/lib/python2.2/site-packages/matplotlib/backends/backend_agg.py", 
line 334, in draw
 self.figure.draw(self.renderer)
 File "/usr/lib/python2.2/site-packages/matplotlib/artist.py", line 79, 
in draw self._draw(renderer, *args, **kwargs)
 File "/usr/lib/python2.2/site-packages/matplotlib/figure.py", line 81, 
in _draw
 for a in self.axes: a.draw(renderer)
 File "/usr/lib/python2.2/site-packages/matplotlib/artist.py", line 79, 
in draw self._draw(renderer, *args, **kwargs)
 File "/usr/lib/python2.2/site-packages/matplotlib/axes.py", line 493, in 
_draw line.draw(renderer)
 File "/usr/lib/python2.2/site-packages/matplotlib/artist.py", line 79, 
in draw self._draw(renderer, *args, **kwargs)
 File "/usr/lib/python2.2/site-packages/matplotlib/lines.py", line 177, 
in _draw
 gc.set_foreground(self._color)
 File "/usr/lib/python2.2/site-packages/matplotlib/backend_bases.py", 
line 230, in set_foreground
 self._rgb = colorConverter.to_rgb(fg)
 File "/usr/lib/python2.2/site-packages/matplotlib/colors.py", line 82, 
in to_rgb
 error_msg(msg)
NameError: global name 'error_msg' is not defined
>>>