Why is it that this attempt to run a clustergram is not working?
3 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
evanma
el 11 de Sept. de 2016
Comentada: evanma
el 11 de Sept. de 2016
I had looked at the distance functions documenting how to make custom distance functions as shown here: http://www.mathworks.com/help/stats/pdist.html So when I implemented it, it was as shown
XX = randn(214, 66);
weuc = @(XI,XJ,W)(sqrt(bsxfun(@minus,XI,XJ).^2 * W'));
Dwgt=pdist(XX',@(Xi,Xj) weuc(Xi,Xj,Wgts));
tree = linkage(XX','average');
figure()
leafOrder = optimalleaforder(tree,Dwgt);
dendrogram(tree,0,'colorthreshold',.3,'reorder',leafOrder) ;
clo=clustergram(XX(1:214,1:66),'linkage','complete','Standardize','none','RowPDist','euclidean','ColumnPDist',@(Xi,Xj) weuc(Xi,Xj),'Cluster', 'all','RowLabels',AA(1:214))
The weights are simply set to 1 so that for a 214 x 66 matrix the weights are a 66X 1 vector with all ones for their values.
So what happens is that the clustering works for the dendrogram but not for the clustergram. Ihad looked at the Matlab documentation to make sure I was using pdist correctly but it when I run it, Matlab just says
Error using clustergram>computeDendrogram (line 1273)
Encountered error while computing hierarchical clusters: Error evaluating distance function '@(Xi,Xj)weuc(Xi,Xj)'
Is there a reason, perhaps with the syntax I used, as to why this would be the case?
Thanks for any help you can provide.
0 comentarios
Respuesta aceptada
Walter Roberson
el 11 de Sept. de 2016
Your weuc requires three arguments, but the code is calling it with two arguments because you have
'ColumnPDist',@(Xi,Xj) weuc(Xi,Xj),
You need to create a W argument, even if it is just
'ColumnPDist',@(Xi,Xj) weuc(Xi, Xj, 1),
Más respuestas (0)
Ver también
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!