How to extract data from a slice?

Question

John 2016-12-1

1
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/314847-how-to-extract-data-from-a-slice

回答： KSSV 2016-12-1

The example in "doc slice" is very good:

    hsp = surf(linspace(-2,2,20),linspace(-2,2,20),zeros(20)+1);
    rotate(hsp,[1,-1,1],30)
    xd = get(hsp,'XData');
    yd = get(hsp,'YData');
    zd = get(hsp,'ZData');
    delete(hsp)
    [x,y,z] = meshgrid(-2:.2:2,-2:.25:2,-2:.16:2);
    v = x.*exp(-x.^2-y.^2-z.^2);
    slice(x,y,z,v,xd,yd,zd);

How can the data of this slice be extracted as a "2D matrix slice" and used later to show with imshow for example?

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Answer 1

KSSV 2016-12-1

3
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/314847-how-to-extract-data-from-a-slice#answer_245462

在 MATLAB Online 中打开

Already you did it...The code you gave has the way to extract the data you want.

hsp = surf(linspace(-2,2,20),linspace(-2,2,20),zeros(20)+1);
rotate(hsp,[1,-1,1],30)
xd = get(hsp,'XData');
yd = get(hsp,'YData');
zd = get(hsp,'ZData');
delete(hsp)
[x,y,z] = meshgrid(-2:.2:2,-2:.25:2,-2:.16:2);
v = x.*exp(-x.^2-y.^2-z.^2);
hss = slice(x,y,z,v,xd,yd,zd);
xs = get(hss,'XData');
ys = get(hss,'YData');
zs = get(hss,'ZData');
cs = get(hss,'CData');
figure
surf(xs,ys,zs,cs) ;