matplotlib-users Mailing List for matplotlib

On Tue, 2004-03-16 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
>>>