Plotting a 2D matrix
214 views (last 30 days)
Show older comments
Alok Pathak
on 27 Jun 2014
Commented: Gnaneswar Nadh satapathi
on 27 Jun 2014
I need to plot a matrix M which is 300*42 in size. On the X axis I need to plot 1:42. On the Y Axis I need to plot the value corresponding to the 42 values. On the Z axis I need to plot the 1:300 value.
I tried using the plot3 function in a loop like this and I wouldnt get it right :
for i = 1:300
plot( 1:42, M(i, 1:42), 1:i);
hold on;
drawnow ;
end
I get the error Vectors are not of similar lengths. Please Help. Many thanks
Regards
3 Comments
Accepted Answer
Andrei Bobrov
on 27 Jun 2014
Edited: Andrei Bobrov
on 27 Jun 2014
s = size(M);
[z,x] = ndgrid(1:s(1),1:s(2));
data = permute(num2cell(cat(3,x,M,z), 2),[3,2,1]);
plot3(data{:});
or
s = size(M);
[x,z] = ndgrid(1:s(2),1:s(1));
plot3(x,M.',z);
0 Comments
More Answers (1)
David Sanchez
on 27 Jun 2014
Maybe you are thinking no something like this:
M=rand(300,42); % your data here
[xx, yy] = meshgrid(1:42,1:300);
plot3(xx,yy,M,'*')
0 Comments
See Also
Categories
Find more on Annotations in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!