Calculate the correlation between modules

## Usage

`modcors(x, g, mset = NULL, ...)`

## Arguments

- x
a data set, with variables (e.g. genes) in rows and samples in columns

- g
a vector of variable idenitifiers which correspond to the definition of modules

- mset
a module set

- ...
any further parameters will be passed to the cor() function

## Value

a matrix of module correlation coefficients

## Details

The correlation between modules are defined as
correlation coefficient between the modules eigengenes.
These are based on a particular gene expression data set.

This function is a simple wrapper combining eigengene() and cor().