Re: axes limit calculations

[Shai Ayal]

On Thu, Aug 28, 2008 at 3:33 PM, Ben Abbott <address@hidden> wrote:
> On Thursday, August 28, 2008, at 07:54AM, "Shai Ayal" <address@hidden> wrote:
>>On Thu, Aug 28, 2008 at 2:30 PM, Ben Abbott <address@hidden> wrote:
>>
>>>
>>> On Aug 28, 2008, at 7:22 AM, Shai Ayal wrote:
>>>
>>>
>>>> On Thu, Aug 28, 2008 at 1:47 PM, Ben Abbott <address@hidden> wrote:
>>>>
>>>> However, switching to fltk appears to work ... well  almost. The plot
>>>> doesn't render properly.
>>>>
>>>> Can you elaborate on how it renders?
>>>>
>>>
>>> Perhaps a picture says it best?
>>>
>>> octave:30> close all
>>> octave:31> backend('fltk')
>>> octave:32> x = 0:10;
>>> octave:33> plot(x)
>>>
>>> To underlying windows each contribute to the result in a rather strange
>>> way. The resulting figure includes various sections of my email client, and
>>> some things I don't recognize. In addition the following line is displayed
>>> in the terminal.
>>>
>>> octave:34> ca=nan
>>>
>>> A picture is attached.
>>
>>
>>This looks like an OpenGL and/or fltk problem. The best way to debug this
>>would be to run the ftlk-opengl test programs gl_overlay and glpuzzle and
>>see if they work. You should have them in the test subdir of the fltk
>>sources. If you did not install fltk from source it's a problem :(
>>
>>Another possible solution: I know than on OSX, after compiling a fltk app,
>>you should run
>>
>>ftlk-config --post application_exe_file
>>
>>on your application_exe_file. I am not sure what is the exe file here --
>>octave or the fltk_backend.oct file. Maybe you should try both. Also, you
>>can just look at fltk-config (it's a bash script)  and see what --post does
>>(in my linux PC it does nothing)
>
> I don't notice a change on my system either. As I'm using the aqua variant, I 
> issued the following commands ...
>
> $ fltk-config.aqua --post octave
> $ fltk-config.aqua --post fltk_backend.oct
>
> Trying the simple plot again produced a result similar to before (different 
> garbage but otherwise the same).
>
> I've got a full day and don't have time to dig deeper right not. I hope to 
> have some time this evening or over the weekend. When I have a moment, I'll 
> try the test programs again and report back.
>
> Ben
>
>
>
> octave:1> backend('fltk')
> octave:2> x = 0:10;
> octave:3> plot(x)
> octave:4> close all
> octave:5> backend('gnuplot')
> octave:6> quit
> panic: Segmentation fault -- stopping myself...
> attempting to save variables to `octave-core'...
> terminate called after throwing an instance of 'std::length_error'
>  what():  basic_string::_S_create
> panic: attempted clean up apparently failed -- aborting...
>

Ben -- I somehow have a growing suspicion that you are using an old
version of octave. If you have a full day ahead of you, it is a
wonderful opportunity to get the current source from hg and rebuild
(nice -19, assuming you have enough memory shouldn't bother you at
all)

Shai


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