From e15398ef85fbd7d33fd622717c37560c39b4ca4e Mon Sep 17 00:00:00 2001
From: Jim Procter <jprocter@issues.jalview.org>
Date: Fri, 20 Oct 2017 15:28:08 +0100
Subject: [PATCH] JAL-547 fix NPE when no selection available

---
 examples/groovy/PIDmatrix.groovy |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/examples/groovy/PIDmatrix.groovy b/examples/groovy/PIDmatrix.groovy
index 3ff4b39..b97abcc 100644
--- a/examples/groovy/PIDmatrix.groovy
+++ b/examples/groovy/PIDmatrix.groovy
@@ -62,7 +62,7 @@ void printSimilarityMatrix(boolean selview=false, boolean includeids=true, Simil
 
   jalview.datamodel.AlignmentView seqStrings = av.getAlignmentView(selview)
 
-  if (!selview) {
+  if (!selview || av.getSelectionGroup()==null) {
     start = 0
     end = av.getAlignment().getWidth()
     seqs = av.getAlignment().getSequencesArray()
@@ -96,4 +96,4 @@ void printSimilarityMatrix(boolean selview=false, boolean includeids=true, Simil
 
     print "\n"
   }
-}
+}
\ No newline at end of file
-- 
1.7.10.2