Store values generate in a function call in an array
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Hi I am trying to store the coordinates of the 4 spheres I am plotting from a function call. I can only return the final spheres coordinates instead of all of them. Any help would be greatly appreciated.
xyz = [-8.67212090030965 -7.78294481282592 4.19809966191787
4.30363429770975 -6.33796132936349 2.30412196271579
11.4626419696253 3.31049523749869 2.84193335035400
1.28757516363600 6.20802478748340 11.1358580308193];
x1 = xyz(:, 1);
y1 = xyz(:, 2);
z1 = xyz(:, 3);
SizeXYZ = size(xyz,1);
for i = 1:SizeXYZ
[x,y,z spheresXYZ] = createspheres(x1(i),y1(i),z1(i));
surf(x,y,z,'FaceColor', 'k');
hold on
end
%
function [X,Y,Z, spheresXYZ] =createspheres(spherex, spherey, spherez)
[x, y, z] = sphere(4);
X = x+spherex;
Y = y+spherey;
Z = z+spherez;
spheresXYZ = [X,Y,Z];
end
댓글 수: 2
Rik
2020년 9월 2일
I'm not sure I understand what you mean. Could you provide an example of what you want as the output?
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Bruno Luong
2020년 9월 2일
편집: Bruno Luong
2020년 9월 2일
spheresXYZ = cell(1,SizeXYZ);
for i = 1:SizeXYZ
[x,y,z spheresXYZ{i}] = createspheres(x1(i),y1(i),z1(i));
...
end
댓글 수: 2
Bruno Luong
2020년 9월 3일
편집: Bruno Luong
2020년 9월 3일
If you prefer storage 3D array (assuming the function returns always a fixed size output) you can get them like this at the end of the loop
spheresXYZ = cell(1,SizeXYZ);
for i = 1:SizeXYZ
...
end
spheresXYZ = cat(3, spheresXYZ{:});
Then when needed, each sphere #k coordinates can be obtained by
spheresXYZ(:,:,k)
There is a whole bunch of techniques to preallocate nd array (see e.g. Rik's answer) that can be adapted for each case. This topic is beyond this thread.
추가 답변 (1개)
Rik
2020년 9월 3일
Instead of using a cell array, you can also use a 3D matrix:
[~,~,~,spheresXYZ]=createspheres(0,0,0);spheresXYZ(1,1,SizeXYZ)=0;
for n = 1:SizeXYZ
[x,y,z,spheresXYZ(:,:,n)] = createspheres(x1(n),y1(n),z1(n));
end
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