how to plot a correlation matrix between two variables as a heatmap in matlab?
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Anju K Joshi
el 21 de Ag. de 2019
Comentada: Michelle Wagner
el 4 de Mzo. de 2023
I have two variables which vary with each run of my code. I have to calculate the correlation matrix between these two variables. The matrix axes will be like variable X(first run),variable Y(first run),Variable X(second run),variable Y (second run)......I need to plot this correlation matrix as a heat map?
please help me
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Riz
el 22 de Nov. de 2019
Just perform Pearson or Spearman correlation depending on your data. Then display the resulting matrix as an image and apply any colormap of your choice.
%% Code Snippet
corr(yourvariables)
imagesc(ans); % Display correlation matrix as an image
set(gca, 'XTick', 1:sizeofyourcorrmatrix); % center x-axis ticks on bins
set(gca, 'YTick', 1:nsizeofyourcorrmatrix); % center y-axis ticks on bins
set(gca, 'XTickLabel', yourlabelnames); % set x-axis labels
set(gca, 'YTickLabel', yourlabelnames); % set y-axis labels
title('Your Title', 'FontSize', 10); % set title
colormap('jet'); % Choose jet or any other color scheme
colorbar on; %
3 comentarios
Martim Zurita
el 22 de En. de 2021
Nilima, write xlabel('Example 1') and ylabel('Example 2') to put names in the x and y axis. See more at https://www.mathworks.com/help/matlab/ref/xlabel.html.
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Niyati Chokshi
el 27 de Mayo de 2022
Editada: Niyati Chokshi
el 27 de Mayo de 2022
I have four variables- 3 of them are caluating the fourth one, thus mismatch of the lengths/dimension. . How do I use imagesc and corr for that?
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