reduce the grid size per a conversation with Josh

RadioAstronomySoftwareGroup · Feb 22, 2024 · 31ae537 · 31ae537
1 parent aba14df
commit 31ae537
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/pyuvdata/utils.py b/pyuvdata/utils.py
@@ -4524,7 +4524,10 @@ def find_clusters_grid(baselines, baseline_vecs, tol=1.0):
 
     """
     bl_gps = {}
-    grid_size = tol / 2.0
+    # reduce the grid size to ensure baselines won't be assigned to a group
+    # more than the tol away from their location. The factor of 4 is a personal
+    # communication from Josh Dillon who developed this algorithm.
+    grid_size = tol / 4.0
 
     p_or_m = (0, -1, 1)
     epsilons = [[dx, dy, dz] for dx in p_or_m for dy in p_or_m for dz in p_or_m]