Computes the RV coefficient between dataset 1 and dataset 2. You'll typically won't need to call this function directly,
but should use rv.cor.matrix() instead, as it will make determining partial RV coefficients, p-values and confidence
intervals easier later on.
Usage
rv.coef(S1, S2)
Arguments
S1
Configuration matrix corresponding to dataset 1
S2
Configuration matrix corresponding to dataset 2
Value
The RV coefficient between dataset 1 and dataset 2