Assigning a different colors to NaN while plotting heatmap.

Hello all

I have a data, let's say 1000X1000 which consists of numerical values and NaN.

I have to generate a heatmap from it for which I am using the inbuilt command in MATLAB. At the same time, I want to assign a different color(different from my spectrum) to all NaN's. According to the documentation (https://in.mathworks.com/help/matlab/ref/matlab.graphics.chart.heatmapchart-properties.html) we can use

h = heatmap(__,'MissingDataColor',[0.8 0.8 0.8])

to achieve the goal but it is not working in my case.

Please help.

[Adam Danz]

"It's not working" is vague.

If you're getting an error please share the entire error message. If the color is not changed, please provide a screenshot.

When I try it in r2020a, it works fine.

m = magic(8); 
m(randi(64,1,5)) = nan;
heatmap(m,'MissingDataColor',[0.8 0.8 0.8])

Images below show the default color and the changed color.

[Vikash Mittal]

Hey Adam

It was working but not changing the color. I should have mentioned it explicitly. I just installed new update 2020b and now it's working perfectly fine.

Thanks once again for your time.

[Adam Danz]

What version were you using when it didn't work? Did you get an error message?

[Vikash Mittal]

I was using 2020a and as I said before it was working but not changing the color. There was no error message.

Actually I figured out the reason. There is one package I found https://www.mathworks.com/matlabcentral/mlc-downloads/downloads/submissions/24253/versions/7/previews/html/heatmap_examples.html here which I put in my path. This was creating the problem. Although, I don't understand what is the difference between the command given in package and the conventional MATLAB command for heatmap.

[Adam Danz]

I had a feeling you were shadowing the main function.