rename corr in CorrelationMatrix to c

covariancematrix.go

@@ -86,18 +86,18 @@ func CovarianceMatrix(cov *mat64.Dense, x mat64.Matrix, wts []float64) *mat64.De
 // and positive-semidefinite.
 //
 // The weights wts should have the length equal to the number of rows in
-// input data matrix x. cov should either be a square matrix with the same
+// input data matrix x. c should either be a square matrix with the same
 // number of columns as the input data matrix x, or nil in which case a new
 // Dense matrix will be constructed.  Weights cannot be negative.
-func CorrelationMatrix(corr *mat64.Dense, x mat64.Matrix, wts []float64) *mat64.Dense {
+func CorrelationMatrix(c *mat64.Dense, x mat64.Matrix, wts []float64) *mat64.Dense {
 
 	// TODO(jonlawlor): indicate that the resulting matrix is symmetric, and change
 	// the returned type from a *mat.Dense to a *mat.Symmetric.
 
 	// This will panic if the sizes don't match, or if wts is the wrong size.
-	corr = CovarianceMatrix(corr, x, wts)
-	covToCorr(corr)
-	return corr
+	c = CovarianceMatrix(c, x, wts)
+	covToCorr(c)
+	return c
 }
 
 // covToCorr converts a covariance matrix to a correlation matrix.