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first2eigenvalues
2003 Oct 07
0
NaN values returned by cmdscale
....004737846
[3,] 0.07576131 0.004737846 0.000000000
Function call:
============
coordinates <- sammon(newDmat,trace=FALSE)$points
Error message:
===============
Error in sammon(newDmat, trace = FALSE) : NA/NaN/Inf in foreign
function call (arg 4)
In addition: Warning messages:
1: some of the first2eigenvalues are < 0 in: cmdscale(d, k)
2: NaNs produced in: sqrt(ev)
Output from using just cmdscale on the same distance matrix, printing
eigen values and vectors:
===================
$points
[,1] [,2]
[1,] 0.05212395 NaN
[2,] -0.02847993 NaN
[3,] -0.02364402 NaN
$eig
[1] 4.0870...