snapshot...

modules/util/lon_lat_grid.py

@@ -81,6 +81,8 @@ class LonLatGrid:
         if len(lons) == 0 or len(lats) == 0:
             return None, None
 
+        lons = np.where(lons < 0, lons + 360, lons)
+
         lons = lons.flatten()
         lats = lats.flatten()