distance between vectors in matlab???
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hi
i have a vector of 85*1 size and a matrix contains 85*396.
i need to find the distance between the 85*1 vector and all the vectors(columns ) of the matrix gamma and returns the closest distance and the column that give me this distance , how can i do this by matlab ???
thanks for all
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Titus Edelhofer
am 3 Apr. 2012
Hi,
bsxfun is your friend:
x = rand(85, 1);
A = rand(85, 396);
dist = bsxfun(@minus, A, x);
dist2 = sqrt(sum(dist.*dist));
[mindist, column] = min(dist2);
Titus
3 Kommentare
Titus Edelhofer
am 3 Apr. 2012
Hi,
x and A were just examples, I thought that the matrix (gamma) and the vector (features) are given. So: remove the first two lines above and start with the line dist = ..., if variables gamma and features are there ...
Titus
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Thomas
am 3 Apr. 2012
doc boxdist
The box dist should give you distance between position vectors.
Follow the example given int he documentation
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