How to plot a surface 3d plot using this function?

TIME=1:1:100;

Z=1:1:100;

[X,Y]=meshgrid(TIME,Z);

P=12242-28.649.*cos(6.28.*TIME+1.33.*Z)-1702.3.*sin(6.28.*TIME+1.33.*Z)-495.13.*cos(12.57.*TIME+2.67*Z)+986.71.*sin(12.57.*TIME+2.67.*Z)+498.18.*cos(18.85.*TIME+4.*Z)-398.52.*sin(18.85.*TIME+4.*Z)-319.34.*cos(25.13.*TIME+5.33.*Z)+165.06.*sin(25.13.*TIME+5.33.*Z)+213.61.*cos(31.42.*TIME+6.67.*Z)-71.69.*sin(31.47.*TIME+6.67.*Z)-151.29.*cos(37.7.*TIME+8.*Z)+29.867.*sin(37.7.*TIME+8.*Z)+112.34.*cos(43.98.*TIME+9.33.*Z)-9.378.*sin(43.98.*TIME+9.33.*Z)-86.576.*cos(50.266.*TIME+10.667.*Z)-1.2438.*sin(50.266.*TIME+10.667.*Z);

surf(Z,P,TIME)

The error is always the same:

??? Error using ==> surf at 78 Z must be a matrix, not a scalar or vector.

Error in ==> signal at 5 surf(Z,P,TIME)

Can anybody help me on this?..Any help will be appreciated. THanks and have a nice day :)

[Oleg Komarov]

Please format the code (only the code): http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup#answer_18099

Answer 1

[Star Strider]

The easiest way to do what you want is to convert P into an anonymous function and pass it the correct arguments:

TIME=1:1:100;

Z=1:1:100;

[X,Y]=meshgrid(TIME,Z);

P=@(TIME,Z) 12242-28.649.*cos(6.28.*TIME+1.33.*Z)-1702.3.*sin(6.28.*TIME+1.33.*Z)-495.13.*cos(12.57.*TIME+2.67*Z)+986.71.*sin(12.57.*TIME+2.67.*Z)+498.18.*cos(18.85.*TIME+4.*Z)-398.52.*sin(18.85.*TIME+4.*Z)-319.34.*cos(25.13.*TIME+5.33.*Z)+165.06.*sin(25.13.*TIME+5.33.*Z)+213.61.*cos(31.42.*TIME+6.67.*Z)-71.69.*sin(31.47.*TIME+6.67.*Z)-151.29.*cos(37.7.*TIME+8.*Z)+29.867.*sin(37.7.*TIME+8.*Z)+112.34.*cos(43.98.*TIME+9.33.*Z)-9.378.*sin(43.98.*TIME+9.33.*Z)-86.576.*cos(50.266.*TIME+10.667.*Z)-1.2438.*sin(50.266.*TIME+10.667.*Z);

Pmtx = P(X,Y);

surfc(X,Y,Pmtx)

[fremond khoo]

Thanks a lot :) it helps greatly :)

[Star Strider]

It is my pleasure to help!