On Jun 29, 2007, at 2:27 AM, dominik baenninger wrote:

> Dear list,
>
> Since I am a plplot-newbie, this is probably a newbie question.  
> Anyway,
> I am looking for the following feature: From a running program I would
> like to visualize in which way a vector changes during runtime, i.e.
> this vector is changed in a for-loop and I will plot this vector each
> time it is changed. Question: Is it possible to draw the vector with
> plplot to a screen-device (yes it is:) ) and conserve this plot during
> my code calculates the new values for the vector, and then draw the  
> new
> graphic to the same screen-device?

Whether or not this works is going to depend on which screen-device  
you are using, but with "xwin" you should be able to do this by  
calling plflush() between each vector plotting operation.

init-plot()
loop {
   calculate-new-vector
   plot-vector
   plflush
}
plend()

In the end you will have all the vectors displayed on the plot. If  
you only want to display the latest vector you should call plclear()  
before plot-vector.

Not all of the screen-device drivers support plflush() and/or plclear().

-Hazen


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