bugGNU Octave - Bugs: bug #64364, scatter does not respect hold

 
 

bug #64364: scatter does not respect hold

Submitter:  Muhali <muhali>
Submitted:  Wed 28 Jun 2023 03:59:40 PM UTC
   
 
Category:  Plotting with OpenGL Severity:  2 - Minor
Priority:  3 - Low Item Group:  Matlab Compatibility
Status:  Need Info Assigned to:  None
Originator Name:  Open/Closed:  * Open
Release:  * 8.1.0 Operating System:  * GNU/Linux
Fixed Release:  None Planned Release:  None
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Mon 17 Jul 2023 06:31:14 PM UTC, comment #3: 

More testing shows that this is quite difficult to resolve in the C++ code.  The workaround of changing "climmode" to "manual" is best option right now.

Rik <rik5>
Group administrator
Wed 28 Jun 2023 11:31:54 PM UTC, comment #2: 

For what it's worth, Matlab does behave differently from Octave.  The clim property remains set at [0, 0.1] at the same time that the 'climmode' property remains at "auto".


Rik <rik5>
Group administrator
Wed 28 Jun 2023 04:50:44 PM UTC, comment #1: 

I'm not sure what you are trying to say. Both the image as well as the scatter "dot" are displayed in the same axes after I run your example here. So, `hold on` is working afaict.

If you'd like to retain the color limits after the image is displayed, set the "climmode" to manual:

x = 0:10;
y = 0:2:10;
clf; hold on
imagesc(x, y, x'*y/1000) ;
set(gca, 'climmode', 'manual');
get(gca, 'clim')
scatter (6, 8, "r", "filled");
get(gca, 'clim')


For general support questions, the Discourse forum might be the better place to ask: https://octave.discourse.group/

If you still think there is a bug, could you please elaborate a bit which aspect is not working as expected?

Markus M├╝tzel <mmuetzel>
Group administrator
Wed 28 Jun 2023 03:59:40 PM UTC, original submission:  

Doing


x = 0:10;
y = 0:2:10;

clf; hold on
imagesc(x, y, x'*y/1000) ;
get(gca, 'clim')
scatter (6, 8, "r", "filled");
get(gca, 'clim')


gets you two different contour limits of [0 0.1] and [0 1]. This is the reason why the first figure is not 'hold'.

Muhali <muhali>

 

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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2023-06-28 rik5 Severity3 - Normal 2 - Minor
        Priority5 - Normal 3 - Low
        Item GroupNone Matlab Compatibility
    2023-06-28 mmuetzel StatusNone Need Info

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