Plot Matrix Matlab at even spaces
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I have a matrix A = [1000,1000] and i need to plot it at even spaces
Ex: The x axis have 1000 spaces from 1 to 1000.
The y axis have 1000 spaces from 0.5 to 500
the numbers on matrix A represent the position of each point in the z axis
For the first element of A there should be a point
(1,0.5,{1,1})
and thereafter...
(1,0.5,{1,1}) (1,1,{1,2}) (1,1.5,{1,3})...
(2,0.5,{2,1}) (2,1,{2,2}) (2,1.5,{2,3})...
(3,0.5,{3,1}) (3,1,{3,2}) (3,1.5,{3,3})...
In the end i would have a graphic containing 10^6 points
2 件のコメント
per isakson
2015 年 3 月 27 日
編集済み: per isakson
2015 年 3 月 27 日
Is A a cell array?
A = [1000,1000] isn't consistent with the detailed description - or?
回答 (1 件)
Star Strider
2015 年 3 月 27 日
It seems that the linspace and meshgrid function will do what you want.
2 件のコメント
Star Strider
2015 年 3 月 27 日
編集済み: Star Strider
2015 年 3 月 28 日
If I understand your ‘A’ cell array correctly, you do not need the for loops to recover your matrix from your cell array. You probably can do it with one call to cell2mat.
For example:
a = randi(10, 10, 15); % Create Numerical Array
C = mat2cell(a, ones(1,10), 15); % Convert to (10x1) Cell Of (1x15) Double Vectors
A = cell2mat(C); % Create Double Matrix A From C
I would create your x and y matrices as:
x = linspace(1, 1000, 1000);
y = linspace(0.5, 500, 1000);
[X,Y] = meshgrid(x, y);
then use surf or mesh to plot them, such as:
figure(1)
surf(X, Y, A)
grid on
If that does not match up exactly with what you want ‘A’ to be with respect to ‘X’ and ‘Y’, transpose ‘A’:
figure(1)
surf(X, Y, A.')
grid on
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