Silhouette: How do I 'add' labels to bars and assign colors to each cluster

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AR
AR 2022-11-11
评论： AR 2022-11-20
Matlab SMEs,
Request help/advice:
1) Adding Labels to each bar on Silhouette
2) Assign different colors to each Silhouette bar or each cluster
My data, silTab.mat, attached & my attempts below.
Thank you.
--Allen
silLabels=SilTab.Properties.RowNames;
[ss sh]=silhouette(SilTab{:,1:20},SilTab{:,21},'Euclidean');
sh.Color=copper(length(sh)); % copper colormap for each bar
[ss sh]=silhouette(SilTab{:,1:20},SilTab{:,21},'Euclidean');
set(gca,{'Color'},num2cell(copper(length(sh)),2));
[ss sh]=silhouette(SilTab{:,1:20},SilTab{:,21},'Euclidean');
set(gca,'yticklabel',silLabels)

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Vijay
Vijay 2022-11-14
Hello @AR
I am assuming by each cluster you mean different color for each bar. In a single bar graph you cannot do that, But there are workarounds.
Steps:
1. Extract data from current figure
2. Plot a new desired bar graph.
Step 1: Extracting Data
data = get(sh.CurrentAxes, 'Children');
x = get(data, 'XData');
y = get(data, 'YData');
Step2: Plotting graph.
Please refer to the link below on how to get different color for each bar.
bar plot with different color bars depending on height - MATLAB Answers - MATLAB Central (mathworks.com)
For Adding labels to the graph please refer to the link below
Horizontal bar graph - MATLAB barh - MathWorks India
Hope that helps!
  1 个评论
AR
AR 2022-11-20
VB, Thank you. This is exactly what I need. I did hope there was sinlge line of code that existed to color code the silhoutte output plot's bars, however this method works great. Best Regards, --Allen

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