works even if col is 1 residue

diff --git a/src/jalview/gui/ScalePanel.java b/src/jalview/gui/ScalePanel.java
index b349b5b..37cfcaf 100755 (executable)
--- a/src/jalview/gui/ScalePanel.java
+++ b/src/jalview/gui/ScalePanel.java
@@ -150,7 +150,10 @@ public class ScalePanel extends JPanel
 \r
     gg.setColor(Color.black);\r
 \r
-    int scalestartx = startx - startx%space + space;\r
+\r
+    int scalestartx = 0;\r
+    if(space>0)\r
+      scalestartx = startx - startx%space + space;\r
 \r
 \r
     //Fill the selected columns\r