X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fgui%2FCalculationChooser.java;h=4e22a74485798aee2955faca65b64f61e9c802e4;hb=4e8b2752f94195adadb8ae9b46e0fcd5181a7155;hp=7747a6b4bf5b5013dfe3407018dedededb6163d6;hpb=4708e769a97588501d41e43df8f756c176b9421d;p=jalview.git

diff --git a/src/jalview/gui/CalculationChooser.java b/src/jalview/gui/CalculationChooser.java
index 7747a6b..4e22a74 100644
--- a/src/jalview/gui/CalculationChooser.java
+++ b/src/jalview/gui/CalculationChooser.java
@@ -594,6 +594,8 @@ public class CalculationChooser extends JPanel
     AlignmentAnnotation[] annotations = af.getViewport().getAlignment().getAlignmentAnnotation();
     
     List<String> ssSources = AlignmentUtils.getSecondaryStructureSources(annotations);
+    //List<String> ssSources = AlignmentUtils.extractSSSourceInAlignmentAnnotation(annotations);
+    
                  
     return ssSources;
   }
@@ -605,10 +607,16 @@ public class CalculationChooser extends JPanel
   {
     boolean doPCA = pca.isSelected();
     String modelName = modelNames.getSelectedItem().toString();
-    String ssSource = ssSourceDropdown.getSelectedItem().toString();
+    String ssSource = "";
+    Object selectedItem = ssSourceDropdown.getSelectedItem();
+    if (selectedItem != null) {
+        ssSource = selectedItem.toString();
+    }
     SimilarityParams params = getSimilarityParameters(doPCA);
     if(ssSource.length()>0)
+    {
       params.setSecondaryStructureSource(ssSource);
+    }
     if (doPCA)
     {
       openPcaPanel(modelName, params);