a positive integer, the dimension of correlation matrix.
rho
a value between 0 and 1, a baseline vlaue of correlation coefficient.
type
a character, specify the type of correlation matrix and only include
'toeplitz' and 'identity' in current version.
Value
return a correlation matrix with a type of specified structure.
Details
The argument rho specify the size of correlation coeffient. As for argument type, if type='toeplitz', sigma_ij=rho^|i-j|; if type ='identity', sigma_ij=rho when i!=j and sigma_ij=1 when i=j.