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change the name of the N variable to n

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This commit is contained in:
Jonathan J Lawlor
2014-12-24 15:22:21 -05:00
parent 37b73e7875
commit 07dd900803
1 changed files with 4 additions and 4 deletions
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8
covariancematrix.go
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@@ -45,7 +45,7 @@ func CovarianceMatrix(cov *mat64.Dense, x mat64.Matrix, wts []float64) *mat64.De
var xc mat64.Dense
xc.TCopy(&xt)
var N, scale float64
var n, scale float64
if wts != nil {
if wr := len(wts); wr != r {
panic(mat64.ErrShape)
@@ -58,15 +58,15 @@ func CovarianceMatrix(cov *mat64.Dense, x mat64.Matrix, wts []float64) *mat64.De
}
// Calculate the normalization factor.
N = floats.Sum(wts)
n = floats.Sum(wts)
} else {
N = float64(r)
n = float64(r)
}
cov.Mul(&xt, &xc)
// Scale by the sample size.
scale = 1 / (N - 1)
scale = 1 / (n - 1)
cov.Scale(scale, cov)
return cov