How can I create a correlation matrix in R?

Question

I have 92 set of data of same type.

I want to make a correlation matrix for any two combination possible.

i.e. I want a matrix of 92 x92.

such that e

Answer 1

You could use 'corrplot' package.

d <- data.frame(x1=rnorm(10),
                 x2=rnorm(10),
                 x3=rnorm(10))
M <- cor(d) # get correlations

library('corrplot') #package corrplot
corrplot(M, method = "circle") #plot matrix

More information here: http://cran.r-project.org/web/packages/corrplot/vignettes/corrplot-intro.html