fit: fix polynomial regression for d >= 4

This stumbled over the classic capturing-the-loop-variable bug so all terms from degree 3 and on used the highest degree.
aclements · Feb 10, 2017 · 033754a · 033754a
1 parent 03302a9
commit 033754a
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/fit/lsquares.go b/fit/lsquares.go
@@ -152,6 +152,7 @@ func PolynomialRegression(xs, ys, weights []float64, degree int) PolynomialRegre
 		}
 	}
 	for d := 3; d < len(terms); d++ {
+		d := d
 		terms[d] = func(xs, termOut []float64) {
 			for i, x := range xs {
 				termOut[i] = math.Pow(x, float64(d+1))