fix lazar regression prediction for more than one compound

1 files changed, 4 insertions, 4 deletions

diff --git a/lib/transform.rb b/lib/transform.rb
index cb4fc87..8b124f9 100644
--- a/lib/transform.rb
+++ b/lib/transform.rb
@@ -400,10 +400,10 @@ module OpenTox
         # Converts fingerprints to matrix, order of rows by fingerprints. nil values allowed.
         # Same for compound fingerprints.
         def get_matrices
-          @compounds = @model.training_compounds
-          @activities = @model.training_activities
-          @n_prop = @model.training_fingerprints
-          @q_prop = @model.query_fingerprint
+          @compounds = @model.training_compounds.clone
+          @activities = @model.training_activities.clone
+          @n_prop = @model.training_fingerprints.clone
+          @q_prop = @model.query_fingerprint.clone
         end
 
         # Returns propositionalized data, if appropriate, or nil