plot3 a multidimensional array

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Leila Rajabpour 2023-2-9

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https://ww2.mathworks.cn/matlabcentral/answers/1909270-plot3-a-multidimensional-array

评论： Leila Rajabpour 2023-2-13

Hi everyone.

How I can extract the data of each dimension of multidimensional array to use them as the input for the plot3 function? I have a multidimensional array of size (9*3600*7) and I want to plot it using plot3 or in a 3D shape. I want to have the axis data as x=3600, y=9 and z=7.

Thank you.

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Matt J 2023-2-9

Nothing in the post is clear (at least to me).

Leila Rajabpour 2023-2-9

I rewrote my question to make it clear.

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Answer 1

Sarvesh Kale 2023-2-9

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Hi Leila Rajabpour,

part 1)

As an example for matrix V, I am using rand function to generate data, here is code to plot your timeseries data

V=rand(9,3600,7); % REPLACE THIS WITH YOUR OWN DATA     
figure ;
for i =1:7
    plot(V(:,:,i)'); % you have to supply transpose of V, V(:,:,)' is transpose 
end

OR

V=rand(9,3600,7); % REPLACE THIS WITH YOUR OWN DATA     
figure ;
V = permute(V,[2,1,3]); % we have rearranged the array V, interchanged row and column in each 7 dimensions 
for i =1:7
    plot(V(:,:,i)); % you have to supply V
end

you can get more information on plot and permute using the following links

https://in.mathworks.com/help/matlab/ref/plot.html

https://in.mathworks.com/help/matlab/ref/permute.html

part 2) How to plot using plot3 ?

you can get more information on plot3 using following https://in.mathworks.com/help/matlab/ref/plot3.html

plot3(X,Y,Z) plots coordinates in 3-D space.

To plot a set of coordinates connected by line segments, specify X, Y, and Z as vectors of the same length.
To plot multiple sets of coordinates on the same set of axes, specify at least one of X, Y, or Z as a matrix and the others as vectors.