Add another check for >1 markers on a chromosome for interval mapping

There were two places this needed to be checked and I previously missed
this one

1 files changed, 1 insertions, 1 deletions

diff --git a/wqflask/wqflask/marker_regression/display_mapping_results.py b/wqflask/wqflask/marker_regression/display_mapping_results.py
index 034c352b..2c7bba46 100644
--- a/wqflask/wqflask/marker_regression/display_mapping_results.py
+++ b/wqflask/wqflask/marker_regression/display_mapping_results.py
@@ -2470,7 +2470,7 @@ class DisplayMappingResults:
             m = 0
             thisLRSColor = self.colorCollection[0]
             if qtlresult['chr'] != previous_chr and self.selectedChr == -1:
-                if self.manhattan_plot != True:
+                if self.manhattan_plot != True and len(LRSCoordXY) > 1:
                     draw_open_polygon(canvas, xy=LRSCoordXY,
                                       outline=thisLRSColor, width=lrsEdgeWidth)