Array Indexing through a random plane or random line

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Yulai Zhang 2021-11-17

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评论： Yulai Zhang 2021-11-19

Hi,

I have a 3D array M, and I wanted to get the intersection points of M and a random line or a random plane. Can anyone give some advice?

Thanks

Jack

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Walter Roberson 2021-11-17

if you happen to be doing this for drawing purposes, see slice()

Yulai Zhang 2021-11-17

Thanks Walter. This is very helpful. I can see that the data is extracted and displayed. How can I access the data?

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采纳的回答

KSSV 2021-11-18

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You can save the Slice into a variable which be of a class matlab.graphics. From this variable you can extract what you want.

% EXample
[X,Y,Z] = meshgrid(-2:.2:2);
V = X.*exp(-X.^2-Y.^2-Z.^2);
xslice = [-1.2,0.8,2];   
yslice = [];
zslice = 0;
s = slice(X,Y,Z,V,xslice,yslice,zslice);
s
x = S(1).XData ;
y = S(1).YData ;
z = S(1).ZData ;
c = S(1).cData ;

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Yulai Zhang 2021-11-19

Great! Thank you.

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MATLAB Language Fundamentals Matrices and Arrays Creating and Concatenating Matrices

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