matplotlib-users

[Matplotlib-users] multiple plots in matplotlib

[Jim B. <jb...@se...>]

Hi,

  I'm a matplotlib (great package!) newbie. I decided to give the 
new TkAgg interactive mode a try. I did the setup
then tried the example:

>>> from matplotlib.matlab import *
>>> plot([1,2,3])
>>> xlabel('hi mom')

...it worked great. I closed the plot...and tried it again.
Here is what happened:

floyd:/home/jbenson/python>python
Python 2.3.3 (#1, Dec 21 2003, 15:13:18)
[GCC 3.3.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from matplotlib.matlab import *
>>> plot([1,2,3]) # This plot looked fine
Could not find requested font Times
Please set environment var TTFPATH to point to your true type fonts 
(*.ttf)
Could not find Times; falling back on Vera
[<matplotlib.lines.Line2D instance at 0x42c2b20c>]
>>> plot([1,2,3])
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/local/lib/python2.3/site-packages/matplotlib/matlab.py", line 
788, in plot
    draw_if_interactive()
  File 
"/usr/local/lib/python2.3/site-packages/matplotlib/backends/backend_tkagg.py", 
line 46, in draw_if_interactive
    figManager.show()
  File 
"/usr/local/lib/python2.3/site-packages/matplotlib/backends/backend_tkagg.py", 
line 121, in show
    self.window.deiconify()
  File "/usr/local/lib/python2.3/lib-tk/Tkinter.py", line 1412, in 
wm_deiconify
    return self.tk.call('wm', 'deiconify', self._w)
_tkinter.TclError: can't invoke "wm" command:  application has been 
destroyed
>>>

Should i be doing something different if i want to make multiple
plots in interactive mode? I also tried using a figure(i) command
before the plot command...this works fine...unless i try to reuse
a previously closed i-th figure.

Thanks,

Jim
     

Re: [Matplotlib-users] multiple plots in matplotlib

[John H. <jdh...@ac...>]

>>>>> "Jim" == Jim Benson <jb...@se...> writes:


    Jim> ...it worked great. I closed the plot...and tried it again.
    Jim> Here is what happened:

    .... snip ....
    Jim> line 121, in show self.window.deiconify() File
    Jim> "/usr/local/lib/python2.3/lib-tk/Tkinter.py", line 1412, in
    Jim> wm_deiconify return self.tk.call('wm', 'deiconify', self._w)
    Jim> _tkinter.TclError: can't invoke "wm" command: application has
    Jim> been destroyed
    >>>>

    Jim> Should i be doing something different if i want to make
    Jim> multiple plots in interactive mode? I also tried using a
    Jim> figure(i) command before the plot command...this works
    Jim> fine...unless i try to reuse a previously closed i-th figure.

Several people have experienced problems along these lines, and we're
working on a fix.  This was the first release of the Tk backend so
please keep us up to date on other problems you find.  Using the "close"
command instead of clicking the x to close the window should work

>>> from matplotlib.matlab import *
>>> plot([1,2,3])
>>> close()
>>> plot([1,2,3])

Or you can use multiple figures at the same time with the figure
command

>>> from matplotlib.matlab import *
>>> figure(1)
>>> plot([1,2,3])
>>> figure(2)
>>> plot([1,2,3])
>>> close(2)
>>> xlabel('time')  # figure 1 is active


Thanks,
JDH