From ce86c4c5b47feb3de2a95a631eee643e1903adc6 Mon Sep 17 00:00:00 2001
From: abelvm <abel@cartodb.com>
Date: Thu, 18 Aug 2016 10:12:15 -0400
Subject: [PATCH] removed spikes

---
 src/pg/sql/09_voronoi.sql | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/src/pg/sql/09_voronoi.sql b/src/pg/sql/09_voronoi.sql
index eb5921b..361525c 100644
--- a/src/pg/sql/09_voronoi.sql
+++ b/src/pg/sql/09_voronoi.sql
@@ -145,16 +145,26 @@ BEGIN
         SELECT
         (st_dump(v.g)).geom as g
         FROM voro_cells v
+    ),
+    clipped_voro as(
+        SELECT
+            ST_intersection(c.g, v.g) as g
+        FROM
+            voro_set v,
+            clipper c
+        WHERE
+            ST_GeometryType(v.g) = 'ST_Polygon'
     )
     SELECT
         st_collect(
-            ST_Transform(ST_intersection(c.g, v.g), 4326)
+            ST_Transform(
+                ST_ConvexHull(g),
+                4326
+            )
         )
     INTO geomout
     FROM
-        voro_set v,
-        clipper c
-    WHERE ST_GeometryType(v.g) = 'ST_Polygon';
+        clipped_voro;
     RETURN geomout;
 END;
 $$ language plpgsql IMMUTABLE;