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How to draw a 3D plot from an excel data?

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student_md on 22 Feb 2021
Commented: KSSV on 23 Feb 2021
How to draw a 3D plot from an excel data? Please click for downloading following Excel Data (or find attachment)
(maybe mesh 3d plot or surfc plot)
(First column is x-values, first row is y-values.)

Accepted Answer

KSSV on 22 Feb 2021
num = xlsread('test3.xlsx') ;
x = num(2:end,1) ;
y = num(1,2:end) ;
Z = num(2:end,2:end) ;
KSSV on 23 Feb 2021
x=linspace(-2*Pi,2*Pi) ;
y=linspace(-2*Pi,2*Pi) ;
[X,Y] = meshgrid(x,y) ;
Z = sin(x).*cos(y) ; % element by element multiplication

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