[Gmsh] Print a Correct GIF Picture

[Uwe Blechard]

Thanx Christophe,

for your tip. I think I found the reason for this behavior (see below).

First I want to answer your questions:

> 1) does it also happen with other image formats (png, jpeg)?
Yes, it appears also for other formats like png and jpg.
 
> 2) do you see the same problem when running e.g. tutorial/t8.geo?
No, all work find and all pictures were generated.

Your tip, Christophe, shows me, that I must search in another
direction. I think I found the reason for the distorted picures:

In my script sometimes I start gmsh two times simultaneously. 
Then the pictures generated from the first Gmsh are (almost) ok, 
but the pictures generated from the second Gmsh are wrong. 
I don't know, if it is a problem in Gmsh or on my computer 
but I know to avoid this situation.

Thanx.
Uwe Blechard

---
 
> Uwe Blechard wrote:
> > Hi Gmsh group,
> > 
> > I have a problem with the correct figure of a GIF file. Sometimes the 
> > picture has a wrong skaling or it shows only a part of the whole model
> > (if you want, I can attache an example).
> > 
> > The situation is:
> > 
> > - I have a skript file to display the results of a FEM calculation
> >   in Gmsh
> > - after that, I scale the size of the Gmsh window by
> >     General.GraphicsHeight
> >     General.GraphicsWidth
> > - after that two last command, I started a print command to write a GIF 
> >   picture
> > - afterwards I scale the picture again with an other scale value and
> >   print it to an other GIF file
> > 
> > Often I get a wrong GIF picture, which shows a part of the model or
> > strips and pixel and so on. Unfortunately this problem is not
> > reproducible. Sometimes all is right and sometimes not.
> > 
> > I used some option in my batch file (f.e. Draw; BoundingBox;
> > Sleep; General.FastRedraw = 0; General.DoubleBuffer = 0;) 
> > to solve this problem. Nothing solves the problem really.
> > 
> > Question: Have you got some ideas, some proposal, some
> > command parameter, which I can tested and solve the problem.
> 
> 
> 1) does it also happen with other image formats (png, jpeg)?
> 
> 2) do you see the same problem when running e.g. tutorial/t8.geo?
> 
> 
> > 
> > I tested this behavior on a UNIX HP and also on LINUX with
> > 1.60.
> > 
> > Thanx for your help.
> > 
> > Best regards,
> > Uwe Blechard
> > 

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