Displaying 2 results from an estimated 2 matches for "rho_".
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2012 Dec 10
1
Long equation in documentation
I have a long equation that I need to break in the R documentation of a package or it trails off the right hand side of the page. Here's the formula:
\deqn{Cov(r_{ist}, r_{iuv})= [.5\rho_{ist}\rho_{iuv}(\rho_{isu}^2 + \rho_{isv}^2 + \rho_{itu}^2 + \rho_{itv}^2) + \rho_{isu}\rho_{itv}+ \rho_{isv}\rho_{itu}-(\rho_{ist}\rho_{isu}\rho_{isv} + \rho_{its}\rho_{itu}\rho_{itv}) + \rho_{ius}\rho_{iut}\rho_{iuv} + \rho_{ivs}\rho_{ivt}\rho_{ivu}]/n_i}
How can I break the formula and optiona...
2007 Oct 16
2
How to speed up multiple for loop over list of data frames
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...