How do I plot 3d graphs using just matrices Values

A = {1;2;5;7;10;20};

B = {1;2;5;7;10;20}';

[X Y] = meshgrid(A,B);

Z = { 1 8 18 21 25 26; 1 8 18 21 25 26; 1 8 18 21 25 26; 1 8 18 21 25 26; 1 8 18 21 25 26; 1 8 18 21 25 26};

surf(X,Y,Z);

[allbert]

It shows me this error

hh = matlab.graphics.chart.primitive.Surface(allargs{:});

[Jan]

This does not look like an error message. Do you get anything more on the screen?

Answer 1

[Jan]

The curly braces are used to create cell arrays. You want numerical arrays and need square brackets:

A = [1;2;5;7;10;20];
B = [1;2;5;7;10;20]';
[X Y] = meshgrid(A,B);
Z = [1 8 18 21 25 26; 1 8 18 21 25 26; 1 8 18 21 25 26; ...
     1 8 18 21 25 26; 1 8 18 21 25 26; 1 8 18 21 25 26];
surf(X,Y,Z);

And suddenly it works :-)

[allbert]

Thank you very very much