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Surface plot from excel data

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I have a file in excel with varying data in x, y & z independent of each other. How do I surface plot these ??
I did import the X and Y data from excel to matlab, also one of the Z data but not the entire Z data, but shows errror on trisurf(tri,x,y,z); any suggestions?
function plot3Ddata(x,y,z)
test = xlsread('test1.xlsx', 'O2:Q3722');
x=test(:,1);
y=test(:,2);
z=test(:,3);
tri = delaunay(x,y);
trisurf(tri,x,y,z);
end

Accepted Answer

David Hill
David Hill on 2 Aug 2021
a=readmatrix('test1.xlsx');
x=a(1,2:end);
y=a(2:end,1);
z=a(2:end,2:end);
[X,Y]=meshgrid(x,y);
surf(X,Y,z)
  1 Comment
Patrick Chen
Patrick Chen on 3 Aug 2021
Thanks a lot with the help

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