Hi there,
I have a multiple for loop over a list of data frames
for ( i in 1:(N-1) ) {
for ( j in (i+1):N ) {
for ( p in 1:M ) {
v_i[p] = alist[[p]][i,"v"]
v_j[p] = alist[[p]][j,"v"]
}
rho_s = cor(v_i, v_j, method = "spearman")
rho_p = cor(v_i, v_j, method = "pearson" )
iv = c( iv, min(i, j) )
jv = c( jv, max(i, j) )
rho_sv = c( rho_sv, rho_s)
rho_pv = c( rho_pv, rho_p)
}
}
N is of the order of 400, M about 800.
This takes me an entire day basically. Is there anything I could do to speed
things up or is cor really that slow?
-- D
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