Mercurial > dive4elements > river
diff artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/BedQualityCalculation.java @ 7707:cead6df5b7b3
Variance is defined as the sum of squared differences.
author | Tom Gottfried <tom.gottfried@intevation.de> |
---|---|
date | Wed, 18 Dec 2013 12:39:18 +0100 |
parents | 03dc5cc22e26 |
children | e4606eae8ea5 |
line wrap: on
line diff
--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/BedQualityCalculation.java Wed Dec 18 09:53:44 2013 +0100 +++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/BedQualityCalculation.java Wed Dec 18 12:39:18 2013 +0100 @@ -318,7 +318,7 @@ double sig = 0d; for (i = 0; i < size; i++) { - sig += ps[i] * Math.exp(phis[i] - phiM); + sig += ps[i] * Math.pow((phis[i] - phiM), 2); } double deviation = Math.sqrt(sig); return deviation;