Hi Martin,
I understand that you are trying to extend whiskers in the boxchart and add legend for colors in the boxplot and are facing issues with it. There is no direct way possible to perform both tasks. As for adding a colored legend, you can search for the box object and add the legend entry for each box.
data = [randn(100,1) rand(100, 1) rand(100, 1)]; % Initialize a random data
figure;
boxplot(data, 'Colors', 'rbg', 'Labels', {'Group 1', 'Group 2', 'Group 3'});
h = findobj(gca, 'Tag', 'Box');
legendEntries = cell(1, size(data, 2)); % Create a cell array for legend entries
for i = 1:size(data, 2)
legendEntries{i} = ['Variable ' num2str(i)];
end
legend(h, legendEntries);
For grouping data for boxplot, you will need to perform manual adjustments in the code. Also, boxplot only accepts numeric data; for data in table format, you will need to use boxchart.
Hope this helps!
