Plot Matrix Matlab at even spaces
4 views (last 30 days)
Show older comments
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 Comments
per isakson
on 27 Mar 2015
Edited: per isakson
on 27 Mar 2015
Is A a cell array?
A = [1000,1000] isn't consistent with the detailed description - or?
Answers (1)
Star Strider
on 27 Mar 2015
It seems that the linspace and meshgrid function will do what you want.
2 Comments
Star Strider
on 27 Mar 2015
Edited: Star Strider
on 28 Mar 2015
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
See Also
Categories
Find more on Surface and Mesh Plots in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!