Volume slices with multiple colormaps

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Kevin Mallery
Kevin Mallery 2021-6-3
评论： Kevin Mallery 2021-6-3
I would like to be able to plot multiple slices in one figure where each slice can have its own colormap and clims set. The purpose is to be able to plot mulitple quantities (such as fluid velocity and pressure) where the value ranges may not coincide.
I have tried to link two axes as suggested in the answer for this question. However, that solution doesn't handle occlusion very well as shown below.
load wind;
ax1 = gca;
s1 = slice(x, y, z, u, 100, [], 10);
ax2 = axes;
s2 = slice(x, y, z, 100*u, [], 40, []);
ax2.Visible = 'off';
colormap(ax2, 'jet');
linked_properties = {'CameraPosition', 'CameraUpVector',...
'PlotBoxAspectRatio', 'CameraTarget', 'XLim', 'YLim', 'ZLim',...
'DataAspectRatio', 'Position'};
hlink = linkprop([ax1,ax2], linked_properties);
view(145, 30);
Plotting all the slices on one axes fixes the occlusion issue but can only use a single colormap and clim as shown below.
Is this something that can be solved in MATLAB or is it just one of those quirks that you need to live with?
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Adam Danz
Adam Danz 2021-6-3
编辑：Adam Danz 2021-6-3
Good call, @Walter Roberson, I didn't know about that one. Tested it....
load wind;
ax1 = gca;
colormap('parula')
s1 = slice(x, y, z, u, 100, [], 10);
hold on
freezeColors(ax1)
colormap('hot')
s2 = slice(x, y, z, 100*u, [], 40, []);
The colorbar will only represent the last colormap, though. The documentation in freezeColors referrs to another file exchange function to handle that (not tested).
Kevin Mallery
Kevin Mallery 2021-6-3
The freezeColors function seems like it works for me. As long as you don't need more than two colormaps (and it could probably be modified to support that too). The colorbar freeze function that's linked in the documentation doesn't seem to work anymore though. But that's getting off topic.

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