[idx,c,sumd,d] = kmedoids(dat,nclust,'Distance',@dtw);
But I end up with the following errors. I have done this before... with the exact same code. Does anyone know what I could be doing wrong?
Error using pdist (line 371)
Error evaluating distance function 'dtw'.
Error in internal.stats.kmedoidsDistObj/pdist (line 65)
out = pdist(X,distObj.distance);
Error in kmedoids>precalcDistance (line 575)
distVec = distObj.pdist(X);
Error in kmedoids>loopBody (line 546)
xDist = precalcDistance(X,distObj);
Error in kmedoids (line 362)
oneRun = loopBody(algorithm,initialize,X,k,distObj,pneighbors,numsamples,options,display,usePool,onlinePhase);
Error in dtwclassifier (line 9)
[idx,c,sumd,d] = kmedoids(dat,nclust,'Distance',@dtw);
Caused by:
Error using dtw (line 115)
The number of rows between X and Y must be equal when X and Y are matrices
Would it be correct to compute my own distance matrix using DTW, and perform K-Means clustering on that?
Prashant Kumar answered . 2024-05-04 01:01:22
function D2 = distfun(ZI,ZJ) % calculation of distance ...
data = rand(161,20);
[idx,c,sumd,d] = kmedoids(data,10,'Distance',@dtwf);
function dist = dtwf(x,y)
% n = numel(x);
m2 = size(y,1);
dist = zeros(m2,1);
for i=1:m2
dist(i) = dtw(x,y(i,:));
end
end
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