Plot problem?

[Ben Abbott]

On Jun 24, 2009, at 2:50 PM, Robert T. Short wrote:
>
> John W. Eaton wrote:
>> On 16-Jun-2009, Robert T. Short wrote:
>>
>> | And on that note.....
>> | | This may be a gnuplot problem.  I don't know.  I am running 4.2  
>> (the | current debian lenny gnuplot package).  I confess to being  
>> somewhat | overwhelmed by the plot/graphics threads so this may  
>> have already been | addressed.  If so, I apologize in advance.
>> | | The attached script is a vastly simplified version of something  
>> I do a | lot of.  It draws circles with lines between them.
>> | | I frequently print to encapsulated PostScript or fig, depending  
>> on | whether I further need to annotate the plot or not.
>> | | There are two problems: 'axis square' doesn't seem to work and  
>> line | styles don't print correctly.
>> | | --- With either 'axis square' or 'axis equal', the axes come  
>> out unequal | so the circles are smashed.
>>
>> I don't see this with the current Octave sources or 3.2.0.  I'm using
>> gnuplot 4.2 patchlevel 5 on a Debian testing system.
>>
>> | --- The on-screen plot comes out with the line styles and colors  
>> | specified.  The fig file cycles through the colors for both the  
>> circles | and the lines.  The eps file gets the colors right, but  
>> not the line styles.
>>
>> As I recall, mixing line styles and colors has never really worked
>> correctly in gnuplot and the behavior is terminal dependent.  But
>> maybe things have changed lately?  I'm not sure.
>>
>> | In MATLAB, I can't do fig files of course, but it gets the eps  
>> file | right EXCEPT it loses all the colors....
>>
>> Did you use -depsc or -deps?
>>
>> jwe
>> k
>
> Interesting.
>
> I am using 4.2 patchlevel 2, but installed patchlevel 5 and got the  
> same thing.
>
> This is with the tip as of Saturday or so.  Note that a standard 4/3  
> monitor ALMOST works, but not quite.
> This is the difference between using octave and going back to  
> MATLAB, so I have been playing with gnuplot and looking through the  
> octave sources to find out what is going on.  I will let you know -  
> a patch if I can figure it out or a second request if I can't.   
> MATLAB doesn't really work either though, because I need to do some  
> fairly complex annotation and way prefer to use xfig for that.
>
> Bob

I tried gnuplot-4.2.2, gnuplot-4.2.5, and gnuplot's developers  
sources, all with Octave's current sources. They each give me perfect  
circles.

Bob, I notice your script allows the user to "Resize if desired, then  
press enter" ... By chance are you resizing the window via the mouse  
and expecting Octave to handle fixing the aspect ratio for you?

When using the gnuplot backend, Octave is currently unable to detect  
changes, in figure size and position, made using the mouse.

Ben