corr {textir} | R Documentation |
Correlation and deviation in sparse matrices.
corr(x, y)
sdev(x)
x |
A |
y |
A |
corr
returns the ncol(x)
by ncol(y)
matrix of correlation between x and y, and sdev
returns the column standard deviations.
Matt Taddy taddy@chicagobooth.edu
pls, congress109
# some congress examples
data(congress109)
r <- corr(congress109Counts, congress109Ideology$repshare)
## 20 terms for Democrats
sort(r[,1])[1:20]
## 20 terms for Republicans
sort(r[,1], decreasing=TRUE)[1:20]
## 20 high variance terms
colnames(congress109Counts)[
order(-sdev(congress109Counts))[1:20]]