3D plot on 3D matrix

2020 7 29
1 个回答
更新时间：2023 3 6
2 次查看（30 天）

0 个投票

Hi guys, suppose I have a 3D array which look like this. How do I do the plotting with these data?

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Matt J
Matt J 2020-7-29
Plot of what versus what?
salad9996
salad9996 2020-7-29
X having the values of 1:5:50, Y is the column, and Z
Leela Aparna
Leela Aparna 2023-3-6
Similarly I have two 3 dimensional matrices say A and B with same size. I want plot a graph to show the relation between those two matrices. In my case Size of A=17x17x8 and size of B=17x17x8. How can I plot the graph between these two?

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回答（1 个）

KSSV
KSSV 2020-7-29
编辑：KSSV 2020-7-29

0 个投票

You can use pcolor/ surf. You can plot w.r.t indices.
val = rand(10,5,2) ;
% using pcolor
subplot(211)
pcolor(val(:,:,1))
shading interp
colorbar
subplot(212)
pcolor(val(:,:,2))
shading interp
colorbar
% using surf
subplot(211)
surf(val(:,:,1))
shading interp
colorbar
subplot(212)
surf(val(:,:,2))
shading interp
colorbar

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salad9996
salad9996 2020-7-29
What is the use of sub function? I dont have the Fixed-Point Designer in my Matlab
KSSV
KSSV 2020-7-29
It should be subplot. Type error..
salad9996
salad9996 2020-7-29
Given the x=1:5:50, y would be the value of each column,if we only consider the first column of each index, y=val(:,1,:), and z represent the index, which the y in each index will be having a difference value. How do I plot the 3d graph in this case?
Walter Roberson
Walter Roberson 2020-7-29
Sorry, I do not understand what you are asking... too many "index".
Are you saying that the first column of val() gives the y values?
What kind of plot are you hoping for? When you have three independent dimensions (row, column, pane) and one dependent dimension (the content of val), then you need a 4D plot. You could use isosurface() or slice() or you could use volumeViewer() or any similar routine in which the content of each 3D location is given by color and you cannot see "inside" unless transparency is used.
salad9996
salad9996 2020-7-29
Im hoping to plot a graph with the x-axis from x=1:5:50 and the y-axis data would change depending on the z index, val(:,:,z).
KSSV
KSSV 2020-7-30
x = 1:5:50 ;
y = 1:size(val,2) ; % define your y here
[X,Y] = meshgrid(x,y) ;
surf(X,Y,val(:,:,1)') ;

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