MATLAB: I have a matrix 6*2 as following (UNDER THE PLOT), after plotting them i get what you see in the figure. so how can i extract data points in new matrix with fixed increment inYaxis(for example of value 0.1 increment )without change Zvalue for curve

extarct data pointsnew data matrix from a plot

X=[0 1 2;1 4 2;2 9 2;3 13 2;4 18 2;5 15 2;5 15 4;4 18 4;3 13 4;2 9 4;1 4 4;0 1 4]

Best Answer

Hello Faez,

From your description it sounds like you would like to interpolate the value of the line at a point that is not defined in your original matrix. In order to do this you could make use of the "interp2" function. For examples and details on how to use the function refer to the documentation: http://www.mathworks.com/help/matlab/ref/interp2.html

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MATLAB: 3D Plot from point to surfaces

I am not certain what you want.

This should get you started:

Ax=2:4:14;
Ay=2:4:14;
figure(1)
for k1 = 1:length(Ax)
    surf(cumsum(ones(4),1)+Ax(k1), cumsum(ones(4),2)+Ay(k1), zeros(4)+rand)
    hold on
end
hold off
grid on

MATLAB: Hi every one , Is there any way to fill specific cells of a matrix with random number Not all the matrix

It is easiest to use linear indexing for your problem.

The Code —

A = zeros(3,5);
A([3 4 5 8 10 12 13 15]) = randi(9, 1, 8)
A =
     0     2     0     1     2
     0     5     4     0     0
     6     0     0     2     7

Since the numbers are random, you will get different results. The numbers will be in the required locations in ‘A’.

Best Answer

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MATLAB: 3D Plot from point to surfaces

MATLAB: Hi every one , Is there any way to fill specific cells of a matrix with random number Not all the matrix

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