[coordinates] bugfix PCA (subtract mean)

gph82 · Feb 22, 2015 · 265a9b1 · 265a9b1
1 parent 7942eac
commit 265a9b1
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/pyemma/coordinates/transform/pca.py b/pyemma/coordinates/transform/pca.py
@@ -146,5 +146,6 @@ def map(self, X):
         :param X: the input data
         :return: the projected data
         """
-        Y = np.dot(X, self.R[:, 0:self.output_dimension])
+        X_meanfree = X - self.mu
+        Y = np.dot(X_meanfree, self.R[:, 0:self.output_dimension])
         return Y