Visualise Large correlation matrix

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Cameron Kirk
Cameron Kirk 2020-3-26
评论： Peng Li 2020-3-27
Hi Everybody,
Is there anyway I can create a correlation matrix heatmap in matlab?
I have a huge correlation matrix table which has been calculated in SPSS. I just need a better way of visualising this data, if anyone has any ideas that I could achieve this using matlab?
Thanks!
Cameron

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回答（2 个）

Peng Li
Peng Li 2020-3-26
You can visualize a matrix by heatmap using imagesc function.
>> test = randn(100, 100);
>> figure; imagesc(test); colorbar;
Cameron Kirk
Cameron Kirk 2020-3-27
Hi Peng Li,
Thanks for getting back to me.
Unfortunately when I try that with my own own data, or all I get is a colour map that looks like the graph below
  1 个评论
Peng Li
Peng Li 2020-3-27
better use colorbar to add a color bar so that you know the corresponding levels these colors are for. Basically this means your correlation matrix shows bigger values on row around 60. Is that expected?

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