bugGNU Octave - Bugs: bug #52170, gnuplot graphics toolkit multiple...

 
 

bug #52170: gnuplot graphics toolkit multiple axes do not align

Submitter:  Dan Sebald <sebald>
Submitted:  Wed 04 Oct 2017 07:49:44 PM UTC
   
 
Category:  Plotting with gnuplot Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Incorrect Result
Status:  Fixed Assigned to:  None
Originator Name:  Open/Closed:  * Closed
Release:  * dev Operating System:  * Any
Fixed Release:  None Planned Release:  None
* Mandatory Fields

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Sun 15 Oct 2017 12:27:34 AM UTC, comment #5: 

Great.  I pushed the patch here (http://hg.savannah.gnu.org/hgweb/octave/rev/9fab3273ff26).  Marking this bug and bug #52186 as fixed.

Rik <rik5>
Group administrator
Sat 14 Oct 2017 11:18:36 PM UTC, comment #4: 

Sorry, there was some debugging cruft in the previous patch.  New one attached.

(file #42156)

Dan Sebald <sebald>
Sat 14 Oct 2017 11:12:38 PM UTC, comment #3: 

All right, a second version of the patch that clears the arrows at the beginning of the plot.  This solves the issue found in

https://savannah.gnu.org/bugs/?52186

where an annotation is added to the plot.

(file #42155)

Dan Sebald <sebald>
Sat 14 Oct 2017 10:56:30 PM UTC, comment #2: 

Wait for me to confirm that patch.  I'm trying the example in

https://savannah.gnu.org/bugs/?52186

right now and that seems like the exact same issue, i.e., the arrows are being remembered between plots.  There may need to be a second location where the arrows are cleared...

Dan Sebald <sebald>
Sat 14 Oct 2017 10:33:58 PM UTC, comment #1: 

This first patch is to address item 2 in the original submission.  gnuplot remembers arrow settings between plots.  So a plot with multiple axes is going to retain axes (arrows) unless there is a command that clears all previous arrows.  Use the original example before and after the patch to see the difference.

In a follow-up patch I will address the position alignment.

(file #42149)

Dan Sebald <sebald>
Wed 04 Oct 2017 07:49:44 PM UTC, original submission:  

There looks to be multiple issues with the following:


graphics_toolkit gnuplot
figure
plot([0:50], sin(0.03*pi*[0:50]), 'b');
set(gca, 'xcolor', 'b');
set(gca, 'ycolor', 'b');
set(gca, 'box', 'off');
ax = axes('Position', get(gca, 'Position'));
plot(ax, [0:75], 2.5*cos(0.03*pi*[0:75]), 'r');
set(ax, 'xaxislocation', 'top');
set(ax, 'xcolor', 'r');
set(ax, 'yaxislocation', 'right');
set(ax, 'ycolor', 'r');
set(ax, 'color', 'none');
set(ax, 'box', 'off');


1) The two axes don't align even though I specified they should have the same position.

2) There is a vestigial blue border for the second plot when I specified box off.  It's odd that the following doesn't have that border:


graphics_toolkit gnuplot
figure
plot([0:50], sin(0.03*pi*[0:50]), 'b');
set(gca, 'xaxislocation', 'top');
set(gca, 'xcolor', 'b');
set(gca, 'yaxislocation', 'right');
set(gca, 'ycolor', 'b');
set(gca, 'color', 'none');
set(gca, 'box', 'off');


Dan Sebald <sebald>

 

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    Follow 5 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2017-10-15 rik5 StatusNone Fixed
        Open/ClosedOpen Closed
    2017-10-14 sebald Attached File- Added octave-gnuplot_persistent_axes-djs2017oct16.patch, #42156
    2017-10-14 sebald Attached File- Added octave-gnuplot_persistent_axes-djs2017oct15.patch, #42155
    2017-10-14 sebald Attached File- Added octave-gnuplot_persistent_axes-djs2017oct14.patch, #42149

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