After looking at the mail archives, I found a description of the error I get when I use this package. At first I even tought that they were showing how to solve it.
But the thing is that by saying "the programmer forgot drop=FALSE" doesn't show me how I should get rid of the problem
I have looked inside the package very quickly and I found three files, I am not sure what to do to fix this (the problem is describe bellow)
I would be very happy to have someone show me how to solve my problem....
Thanks a lot
S�bastien Durand
On Wed, 20 Feb 2002, David Wartel wrote:
...snip...
I have to solve a clustering problem. My first step is to determinate the number of clusters, that's why I 'm using
... number of clusters. A function is already implemented in R to calculate this index :
clustIndex(cl,x, index="calinski")
Where is that from? It's not part of R -- package cclust, perhaps?
where cl is the result of a clustering method , for instance:
cclust(x,k,itermax,verbose=TRUE,method="kmeans")
My probleme is that I can't calculate the Calinski's index when a cluster contains only one datapoint :
Error in cov(x[cluster == l, ]) : supply both x and y or a matrix-like x
The programmer forgot drop=FALSE, it would seem.
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