bugGNU Octave - Bugs: bug #53476, Color picker in the plot view...


bug #53476: Color picker in the plot view statusbar

Submitted by:  Mayeul Cantan <mayeulc>
Submitted on:  Mon 26 Mar 2018 01:23:48 PM UTC  
Category:  Plotting Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Feature Request
Status:  Duplicate Assigned to:  None
Originator Name:  Open/Closed:  Closed
Release:  dev Operating System:  Any

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Mon 26 Mar 2018 06:31:51 PM UTC, comment #1: 

There is a preliminary implementation of "impixelinfo" and "impixelinfoval" in patch #8722.
The development has stalled but if you would like to give it a try, you are very welcome to participate :-)

I'll close this report as a duplicate.

Pantxo Diribarne <pantxo>
Project Member
Mon 26 Mar 2018 01:23:48 PM UTC, original submission:  

This one is a feature request I hear a lot from Matlab users who do image processing.

When plotting a raster image, such as with imagesc, it would be nice to have the color of the pixel hovered by the mouse displayed as well as its coordinates. Either the three channels R,G,B separately, or the raw pixel value for a monochrome image. Matlab does this in the statusbar with a cube showing a preview of the color, if I recall correctly.

This would help a lot, as the current workflow is to hover the mouse over the desired pixel, take a note of the coordinates, and go check the original matrix by manually inputting the coordinates.

Displaying the color picker could be a window property that's set when displaying an image.

We could also imagine extending this to normal plots, printing for example the associated legend entry when pointing the mouse at a curve.

Mayeul Cantan <mayeulc>


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   patch dependencies.

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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2018-03-26 pantxo StatusNone => Duplicate
        Open/ClosedOpen => Closed
        Dependencies- => Depends on patch #8722

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