[Visualpython-users] gdisplay objects seldom work

[Joe H. <hea...@vn...>]

Hi.

I'm running Mac OS X (10.2.6) and Visual 2.1.1 compiled from source. 
I'm still experiencing problems with gdisplay objects. If I create, for 
example, a graph with gcurve the program usually stalls upon execution, 
but no errors are indicated. Sometimes, roughly 90% of the time, both 
the main window and the graph window open up but the graph window is 
just blank and the other window, usually containing an animation of a 
physical system (e.g. oscillating spring-mass system) remains static. 
Sometimes, roughly 10% of the time, the graph shows up correctly, but 
NOT point by point. The entire graph is displayed after the animation 
is over, and the oscillating spring-mass never appears to move at all. 
On a very, very few occasions I get the correct output, which is an 
oscillating spring-mass system in one window and a graph updated in 
real time in the other window. However, I never ever get the program to 
work completely correctly twice in a row. Everything works fine when 
all the gdisplay related statements are commented out.

Another issue is that when a program that uses a gdisplay object 
terminates, the only way to remove the open windows is to choose "End 
program" from inside IDLE. Otherwise, the output windows remain active 
and can only be removed by opening up an xterm, issuing "top", getting 
the PID, exiting "top", and issuing "kill xxx" where xxx is the pid of 
the correct python22 process.

Any ideas what's going on?

Cheers,
Joe Heafner

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