MATLAB: How we can make a HeatMap like this

Question

Hello all

How we can make a HeatMap like this from the data that I attached?

https://drive.google.com/file/d/1T740vL70KJV10kVlxN13u5e0Z19qJhV0/view?usp=sharing

Answer 1

Hi,

Maybe not the best way but it works:

velocityrange=-80:5:80;

momentrange=-250:10:250;

for i=1:numel(momentrange)

for j=1:numel(velocityrange)

b=find(abs(moment-momentrange(i))<2.5);

c=find(abs(velocity-velocityrange(j))<5);

count=0;

for k=1:numel(b)

if find(b(k)==c)

count=count+1;

end

end

heatmap(i,j)=count;

end

end

imagesc(heatmap)