Re: axes limit calculations

[Ben Abbott]

On Thursday, August 28, 2008, at 08:42AM, "Shai Ayal" <address@hidden> wrote:
>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

Good point. My build was completed the evening of the 26th. As I have fresh 
sources with me (about 12 hrs old) I can build those while I do what pays my 
bills ;-)

Ben