This allows you to do this for ii = -5 : 5Īnd the middle stripe (representing 0) is always the middle color of the colorbar. Just after Matlab starts, its default colormaps (including 'jet') are set to 64 colors (64x3). At this point, changing the CData property for the first bar changes the color of all the first bar (for all groups). Basically you are binning data, using the intervals in colorlimits, into a different variable data2 that you will display 2) make your image of data2 3) define the colorbar limits: caxis ( 0 N) 4) define a colormap with N colors, e.g.
The initial data matrix has 10 rows, that gives 10 groups of bars in regular bar plot. Or, using caxis, a = gca % or whatever you use to access your axis handleĪutomating this is fairly easy as well: a = gca % or whatever you use to access your axis handleĪddlistener(a, 'CLimMode', 'PostSet', e) caxis(e.AffectedObject, max(abs(caxis(e.AffectedObject))) * )) The colour is computed with the help of vals2colormap ( web ). Colormaps are three-column arrays containing RGB triplets in which each row defines a distinct color.
Colormaps are three-column arrays containing RGB triplets in which each row. Set(a, 'CLim', max(abs(get(a, 'CLim'))) * ) You can change the color scheme by specifying a colormap. MATLAB - Plotting, To plot the graph of a function, you need to take the. In earlier versions (and new ones, if you prefer), you would use a = gca % or whatever you use to access your axis handle This works in MATLAB R2014b onwards, which has the new figure handle system (see more details here). All this can be a one-liner: a = gca % or whatever you use to access your axis handle The colorbar automatically picks up its colors from the axes Colormap property, if it is set, or from the figure Colormap property. I like the other answers, especially the one by But it looks so complicated :) And your caxis parameters don't need to depend on your input, you can simply grab them from the axis.
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