distance between a point and elements of a matrix
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Dear;
I am looking for an efficient way to compute the distance between coordinates (x,y,z) and the elements of a 3D matrix. For expample for a M3D[1:nx,1:ny,1:nz] I would like to get ahother 3D matrix Distance3D where each element in the new matrix will be:
M3D(ix,iy,iz)=sqrt((ix-x)^2+(iy-y)^2+(iz-z)^2);
Where ix runs for 1 to nx, so on.
Thanks in advance;
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Fei Deng
il 17 Apr 2017
Are you calculating the distance between coordinates (x,y,z) and the elements of a 3D matrix, OR the distance between coordinates (x,y,z) and the index of a 3D matrix? From your equation, it should be latter case, isn't it? In that case, I probably would just use 3 for-loops.
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