bugGNU Octave - Bugs: bug #55379, Legend...

 
 

bug #55379: Legend "northwestoutside" shrinks axes more than is required

Submitter:  deego <deego>
Submitted:  Fri 04 Jan 2019 08:03:48 AM UTC
 
Category:  Plotting with OpenGL Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Feature Request
Status:  Fixed Assigned to:  None
Originator Name:  deego Open/Closed:  * Closed
Release:  * dev Operating System:  * GNU/Linux
Fixed Release:  None Planned Release:  None
* Mandatory Fields

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Mon 18 Nov 2019 08:55:22 PM UTC, comment #4: 

Verified with new legend.m.  Marking as fixed and closing report.

Rik <rik5>
Project Administrator
Mon 18 Nov 2019 09:49:13 AM UTC, comment #3: 

legend.m has been rewritten (for OpenGL toolkits only). This bug should now be fixed.

Marking ready for test.

Pantxo Diribarne <pantxo>
Project Member
Fri 04 Jan 2019 04:34:02 PM UTC, comment #2: 

Confirmed.  The example can be simplified by using just a single plot.  See the example transcript below.

octave:6> plot ([1, 2])
octave:7> get (gca, 'position')
ans =

   0.13000   0.11000   0.77500   0.81500

octave:8> legend ("foo", "location", "northwestoutside")
octave:9> get (gca, 'position')
ans =

   0.14131   0.11000   0.68968   0.81500

octave:10> .775 - .14131
ans =  0.63369
octave:11> .775 - .13
ans =  0.64500
octave:12> .68968 - .14131
ans =  0.54837

As you can see, legend is not only shifting the axes position to the right to make room for the label "foo", but it is shrinking the width of the axes by more than is required.  I can restore the full size by expanding the width field of the axes "position" property back to what it should be.

octave:13> pos = get (gca, 'position')
pos =

   0.14131   0.11000   0.68968   0.81500

octave:14> pos(3) = (0.775 - (.14131 - 0.13))
pos =

   0.14131   0.11000   0.76369   0.81500

octave:15> set (gca, 'position', pos)

I'll check to see if this is an easy fix, but it might have to wait until the first bug fix release for the 5.0 branch.

Rik <rik5>
Project Administrator
Fri 04 Jan 2019 08:47:06 AM UTC, comment #1: 

Yeah, I can confirm this with the qt toolkit in Octave 4.4 and 5. It does not occur with gnuplot.

Mike Miller <mtmiller>
Project Administrator
Fri 04 Jan 2019 08:03:48 AM UTC, original submission:  

figure(1);
for ii=[3 2 1];
  subplot(1,3,ii);
  plot([1 2]);
endfor
ii=1; legend('foo', 'location' , 'northwestoutside');

Here's a screenshot: http://i.imgur.com/EzdDGlo.png

Reporting per jwe's suggestion. This is with octave 4.2.2. Can anyone verify if this still exists in a later octave?

deego <deego>

 

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    Follow 9 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2019-11-18 rik5 StatusReady For Test Fixed
        Open/ClosedOpen Closed
    2019-11-18 pantxo StatusConfirmed Ready For Test
    2019-01-04 rik5 Item GroupNone Feature Request
        Release4.2.2 dev
        SummaryLegend "northwestoutside" reserves a large whitespace on the east coast! Legend "northwestoutside" shrinks axes more than is required
    2019-01-04 mtmiller CategoryPlotting Plotting with OpenGL
        StatusNone Confirmed
    2019-01-04 deego Carbon-Copy- Added -email is unavailable-

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