From e808c2394befe0655fc9dbd9928160cf4c3b1aa3 Mon Sep 17 00:00:00 2001
From: amwaterhouse <Andrew Waterhouse>
Date: Tue, 20 Sep 2005 13:19:33 +0000
Subject: [PATCH] PCAPanel checks viewport selection

---
 src/jalview/appletgui/PCAPanel.java |    9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/src/jalview/appletgui/PCAPanel.java b/src/jalview/appletgui/PCAPanel.java
index f470ffc..399fce8 100755
--- a/src/jalview/appletgui/PCAPanel.java
+++ b/src/jalview/appletgui/PCAPanel.java
@@ -38,20 +38,19 @@ public class PCAPanel
   SequenceI [] seqs;
 
 
-  public PCAPanel(AlignViewport av, SequenceI[] s)
+  public PCAPanel(AlignViewport av)
   {
 
     this.av = av;
-    if (av.getSelectionGroup().getSize() > 3)
+    if (av.getSelectionGroup()!=null && av.getSelectionGroup().getSize() > 3)
     {
       seqs = new Sequence[av.getSelectionGroup().getSize()];
-      for (int i = 0; i < s.length; i++)
+      for (int i = 0; i < av.getSelectionGroup().getSize(); i++)
       {
         seqs[i] = av.getSelectionGroup().getSequenceAt(i);
       }
     }
-
-    if (seqs == null)
+    else
     {
       seqs = new Sequence[av.getAlignment().getHeight()];
       for (int i = 0; i < av.getAlignment().getHeight(); i++)
-- 
1.7.10.2