Re: plot and image demos (growing window)

[Daniel J Sebald]

Ben Abbott wrote:
> On May 29, 2009, at 12:58 AM, Jaroslav Hajek wrote:
>
> > On Fri, May 29, 2009 at 2:09 AM, Ben Abbott <address@hidden> wrote:
> >
> > > On May 28, 2009, at 5:25 PM, John W. Eaton wrote:
> > >
> > > > On 28-May-2009, Ben Abbott wrote:
> > > >
> > > > | This looks like a feature of gnuplot. When a subsequent "set term
> > > > | x11 ..." command is encountered before the prior plot-stream  
> > > > completes
> > > > | there appears to be some unintended interaction between gnuplot  and
> > > > | x11 which causes the window to grow.
> > > > |
> > > > | For example, try ...
> > > > |
> > > > |       for n=1:100; plot(1:1000); drawnow; end
> > > > |
> > > > | Adding the command "unset mouse" the the beginning of the plot- 
> > > > stream
> > > > | eliminates the problem. Shall a "unset mouse" be added to be  
> > > > beginning
> > > > | of each plot-stream? (changeset attached) ... If desired a "set  
> > > > mouse"
> > > > | may added at the end of the plot-stream. Unfortunately, I don't  know
> > > > | of a good way to detect the state of "set/unset mouse". We could
> > > > | obtain the x11 window ID and ask x11 for the window size while
> > > > | toggling the mouse state, but is it worth the hassle?
> > > >
> > > > No, I don't think it is worth it.
> > > >
> > > > Even unset mouse/set mouse might not be worth it.  Is there an easy
> > > > way to demonstrate this bug with a simple gnuplot script?  If so,  then
> > > > I'd say report it as a bug in gnuplot and we should not bother to  work
> > > > around it in Octave.
> > > >
> > > > jwe
> > >
> > >
> > > John / anyone-else,
> > >
> > >  can you confirm that the simple example I gave causes your window  
> > > to grow?
> > >
> > > Ben
> >
> >
> > Confirmed; it really grows.
>
>
> ok, I'll try to create an example using only gnuplot that does the  same 
> (thus far, I've failed).

Ben,

I've an old version of Octave (3.0.0+) on this machine and just compiled the 
latest gnuplot.  The above command does not cause the plot window to grow.

A month or two ago there was a discussion about querying window size/placement 
so that a moved/resized window will stay in the same place.  Might there be a 
problem with that code?  For example, I can imagine a scenario where Matlab's 
concept of window size and gnuplot's concept of window size differ by one point 
and every time Matlab queries and sets the window there is a difference of one 
pixel.

Dan