How to add legend (or colorbar) to volshow/labelvolshow output?

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Hi, can someone help me to add a legend to a panel created by labelvolshow? I managed to add a title but I really don't know how to put a legend (or at least a colorbar, even if I know it wouldn't be the same thing). Any kind of "legend" is accept: I mean, not just the output of the classic legend function; also some strings, written in the color of the data, can be fine for example..any way to categorize the output is welcome, the important thing is that I'd like it to be automatically generated by the code - no interactions with the panel required.
This is how I add a title:
view_panel = uipanel(figure,'Title',"Titolo");
view_panel.FontSize=14;
view_panel.TitlePosition='centertop';
labelvolshow(volume_labeled,'Parent',view_panel);
Thanks in advance

Accepted Answer

Voss
Voss on 25 May 2022
Maybe something like this can be a start:
volume_labeled = randi(10,[5 5 5]);
view_panel = uipanel(figure,'Title',"Titolo");
view_panel.FontSize=14;
view_panel.TitlePosition='centertop';
h = labelvolshow(volume_labeled,'Parent',view_panel);
NC = size(h.LabelColor,1);
ax = axes( ...
'Parent',view_panel, ...
'Units','normalized', ...
'Position',[0.93 0 0.07 1], ...
'Visible','off', ...
'YLim',[0 10], ...
'CLim',[0 10], ...
'Colormap',h.LabelColor);
p = patch( ...
'Parent',ax, ...
'XData',repmat([0; 1; 1; 0],1,NC), ...
'YData',[0;0;1;1]+(0:NC-1), ...
'FaceColor','flat', ...
'FaceVertexCData',ax.Colormap);
t = text(ax,0.5*ones(1,NC),(1:NC)-0.5,sprintfc('%d',1:NC), ...
'HorizontalAlignment','center');
t(1).Color = [1 1 1];
  17 Comments
Simone Cotta Ramusino
Simone Cotta Ramusino on 1 Oct 2022
Attaching the whole process would be too cumbersome. Anyway, if you want to try, you can create sample E data like this:
E=ones(5,5,3);
E(1,:,:)=100000; % defining bg (far higher)
E(5,:,:)=100000;
E(:,1,:)=100000;
E(:,5,:)=100000;
E(2:4,2:4,1)=randi(100,3); % defining much lower values
E(2:4,2:4,2)=randi(100,3);
E(2:4,2:4,3)=randi(100,3);
and then use the visualization code I've attached before
tuttiE=E(:);
n_cluster=6; % and so on...
I've tried with this and I get the same problem so you can try too, if u want. Thanks again

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