search for: 45x34

...w long it took to distinguish two stimuli from one another-- a square matrix of 45X45 where the diagonal values are all zero (since this represents two identical stimuli). I have been using cmdscale with this matrix as the input-- So: X = cmdscale(mydata,k=44,add=FALSE,eig=TRUE)$points returns a 45x34 matrix because only 34 of the eigenvalues > 0 I then run prcomp on the (transposition of) this matrix: prcomp(t(X),scale.=TRUE) The goal is to take the original matrix of inverse reaction times and transform that data such that we have PCs that show how stimuli are grouping together-- high abs...