TkAgg backend: draw_if_interactive() broken?

[msiegl]

The TkAgg backend does not draw_if_interactive() as expected.

It seems that in backend_tkagg.py, the function should use (in line 65)

figManager.canvas.draw()

instead of
figManager.show()

Can anyone confirm that?

[WeatherGod]

Yeah, I am fairly certain that show() should be doing calling canvas.draw() (actually, it might be draw_idle()). Along a similar line, cocoaagg and fltkagg might have similar bugs.

[efiring]

On 2013/01/08 11:43 AM, Benjamin Root wrote:

Yeah, I am fairly certain that show() should be doing calling
canvas.draw() (actually, it might be draw_idle()). Along a similar line,
cocoaagg and fltkagg might have similar bugs.

What is the simplest way to reproduce the bug?

[msiegl]

I run

import matplotlib
matplotlib.use('TkAgg')
import matplotlib.pyplot as plt

plt.ion()
plt.plot([1,1])

Expected result: window opens, shows plot
Actual result: window opens, plot is not shown. Another call to plt.draw() is required, then it shows.

[efiring]

On 2013/01/08 11:47 PM, msiegl wrote:

I run

import matplotlib
matplotlib.use('TkAgg')
import matplotlib.pyplot as plt

plt.ion()
plt.plot([1,1])

Expected result: window opens, shows plot
Actual result: window opens, plot is not shown. Another call to
plt.draw() is required, then it shows.

What version and platform are you using? I can't reproduce this with
1.2.x on either a Mac or under Linux--I get the expected result in both
cases.

[msiegl]

Thank you for checking this.

My problem is under cygwin (should have mentioned earlier). Apparently draw_idle(), when called by show(), doesn't get to draw. So it has to be 'forced' with draw() instead. Any ideas why my GUI would not be idle in above example?

Since the original issue is void, feel free to close this thread.

[tacaswell]

Closing as OP said it was fixed a year ago.