Re: changes to graphics.cc and subplot.m

[Stefan Mahr]

>>>> The behaviour of subplot with fltk frontend looks strange. Also, the
>>>> first fltk plot differs from the second.
>>>>
>>>> 1) gnuplot
>>>> graphics_toolkit gnuplot
>>>> subplot(2,1,1); plot(rand(10,1)); subplot(2,1,2); plot(rand(10,1))
>>>>
>>>> 2) fltk
>>>> graphics_toolkit fltk
>>>> subplot(2,1,1); plot(rand(10,1)); subplot(2,1,2); plot(rand(10,1))
>>>>
>>>> 3) fltk
>>>> graphics_toolkit fltk
>>>> subplot(2,1,1); plot(rand(10,1)); subplot(2,1,2); plot(rand(10,1))
>>>> subplot(2,1,1); plot(rand(10,1)); subplot(2,1,2); plot(rand(10,1))
>>>>
>>>> See attached the screenshot of gnuplot, fltk and fltk second plot. (from
>>>> left to right)
>>>>
>>>> If I use additional figure command before subplot, everything looks ok.
>>>> graphics_toolkit fltk
>>>> figure(1)
>>>> subplot(2,1,1); plot(rand(10,1)); subplot(2,1,2); plot(rand(10,1))
>>>> subplot(2,1,1); plot(rand(10,1)); subplot(2,1,2); plot(rand(10,1))
>>>
>>> I'm not seeing a problem.
>>>
>>> graphics_toolkit fltk
>>> close all
>>> subplot(2,1,1); plot(rand(10,1)); subplot(2,1,2); plot(rand(10,1))
>>>
>>>
>>> Then if I repeat the plot ...
>>>
>>> subplot(2,1,1); plot(rand(10,1)); subplot(2,1,2); plot(rand(10,1))
>>>
>>> Can you reproduce the problem when you begin with "close all"?
>>>
>>> Ben
>>>
>>
>> Did you restart octave first? Seems that subplot needs to be the first
>> plot-related command, otherwise the error doesn't occur. That's why it
>> works if figure(1) is executed before subplot.
>>
>> Stefan
> 
> I'm still not able to reproduce the problem.  I've written a short script 
> with tests.  If the problem is with Octave the script should produce a 
> failure for you.  If the script does not produce a problem, the source of the 
> problem will be difficult to track down (could be Octave or could be FLTK?).
> 
> Ben


If I take the script as it is I get following output. When adding
figure(1) before subplot, only the last assert returns an error (only
minor differences).


octave-cli:1> graphics_toolkit fltk
octave-cli:2> subplot(2,1,1); plot(rand(10,1)); subplot(2,1,2);
plot(rand(10,1))
octave-cli:3> hax = findall (gcf (), "type", "axes");
octave-cli:4> positions = cell2mat (get (hax, "position"));
octave-cli:5> outerpositions = cell2mat (get (hax, "outerposition"));
octave-cli:6> looseinsets = cell2mat (get (hax, "looseinset"));
octave-cli:7> tightinsets = cell2mat (get (hax, "tightinset"));
octave-cli:8> subplot(2,1,1); plot(rand(10,1)); subplot(2,1,2);
plot(rand(10,1))
octave-cli:9> hax = findall (gcf (), "type", "axes");
octave-cli:10> assert (cell2mat (get (hax, "position")), positions)
error: assert (cell2mat (get (hax, "position")),positions) expected
   0.13000   0.18964   0.77500   0.26152
   0.13000   0.60122   0.77500   0.30994
but got
   0.13000   0.18964   0.77500   0.26152
   0.13000   0.64964   0.77500   0.26152
values do not match
error: called from:
error:   /usr/share/octave/3.7.5/m/testfun/assert.m at line 235, column 5
octave-cli:10> assert (cell2mat (get (hax, "outerposition")),
outerpositions)
octave-cli:11> assert (cell2mat (get (hax, "looseinset")), looseinsets)
error: assert (cell2mat (get (hax, "looseinset")),looseinsets) expected
   0.080000   0.073837   0.045000   0.038837
   0.080000   0.073837   0.045000   0.038837
but got
   0.08000   0.13964   0.04500   0.03884
   0.08000   0.13964   0.04500   0.03884
values do not match
error: called from:
error:   /usr/share/octave/3.7.5/m/testfun/assert.m at line 235, column 5
octave-cli:11> assert (cell2mat (get (hax, "tightinset")), tightinsets)
error: assert (cell2mat (get (hax, "tightinset")),tightinsets) expected
   0.04286   0.13964   0.00000   0.00000
   0.04286   0.09122   0.00000   0.01696
but got
   0.042857   0.013208   0.000000   0.026316
   0.042857   0.013208   0.000000   0.026316
values do not match
error: called from:
error:   /usr/share/octave/3.7.5/m/testfun/assert.m at line 235, column 5
octave-cli:11>


----------------------------------------------------------------------
with figure(1):
----------------------------------------------------------------------

octave-cli:14> assert (cell2mat (get (hax, "tightinset")), tightinsets)
error: assert (cell2mat (get (hax, "tightinset")),tightinsets) expected
   0.042857   0.013199   0.000000   0.026316
   0.042857   0.013122   0.000000   0.026316
but got
   0.042857   0.013199   0.000000   0.026316
   0.042857   0.013199   0.000000   0.026316
values do not match
error: called from:
error:   /usr/share/octave/3.7.5/m/testfun/assert.m at line 235, column 5