corsymm function is negative which correlation is based on a negative moran correlation how to construct correlations of nlme model what is the correlation matrix r? what is the correlation matrix in r what is the matrix for correlations what is r gnls matrix which r package has correlation matrix what is the value of a correlation matrix which function is used to specify a positive-definite correlation? how to set a negative correlation coefficient in r why is the coefficient matrix negative what is r correlation matrix nlme what type of correlation matrix does r use what is the correlation matrix lms what does corsymm do in nlme what is the matrix of correlation in r what is the correlation matrix in r how to determine correlation in nlme with negative data corsymm negative correlation function