Plotting correlations

I found this nice R package to plot correlations : corrplot . Imagine that you want to present five genetic correlations to your buddies. Here's how to visualize them nicely.

#create a covariance matrix
set.seed(1234)
V=rWishart(1,10,diag(5))[,,1]
cov2cor(V)
            [,1]       [,2]       [,3]       [,4]        [,5]
[1,]  1.00000000  0.1169636  0.2236465 -0.2667448  0.04351447
[2,]  0.11696358  1.0000000 -0.2260988 -0.3425368  0.64837326
[3,]  0.22364648 -0.2260988  1.0000000 -0.1883763 -0.22484960
[4,] -0.26674477 -0.3425368 -0.1883763  1.0000000 -0.50315007
[5,]  0.04351447  0.6483733 -0.2248496 -0.5031501  1.00000000
#give it names
colnames(V)=c("MY","gain","longevity","SCS","pietin")
rownames(V)=c("MY","gain","longevity","SCS","pietin")

#plot
require(corrplot)
corrplot.mixed(cor(V),col=gray.colors(10))