diff --git a/README.md b/README.md
index 8f6f949..f98991d 100644
--- a/README.md
+++ b/README.md
@@ -67,6 +67,33 @@ Example
 
     cat tiger/tl_2014_*_roads.json | tippecanoe -o tiger.mbtiles -l roads -n "All TIGER roads, one zoom" -z12 -Z12 -d14 -x LINEARID -x RTTYP
 
+Point styling
+-------------
+
+To provide a consistent density gradient as you zoom, the Mapbox Studio style needs to be
+coordinated with the base zoom level and dot-dropping rate. You can use this shell script to
+calculate the appropriate marker-width at high zoom levels to match the fraction of dots
+that were dropped at low zoom levels.
+
+If you used <code>-z</code> to change the base zoom level or <code>-r</code> to change the
+dot-dropping rate, replace them in the <code>basezoom</code> and <code>rate</code> below.
+
+    awk 'BEGIN {
+        dotsize = 2;    # up to you to decide
+        basezoom = 14;  # tippecanoe -z 14
+        rate = 2.5;     # tippecanoe -r 2.5
+
+        print "  marker-line-width: 0;";
+        print "  marker-ignore-placement: true;";
+        print "  marker-allow-overlap: true;";
+        print "  marker-width: " dotsize ";";
+        for (i = basezoom + 1; i <= 22; i++) {
+            print "  [zoom >= " i "] { marker-width: " (dotsize * exp(log(sqrt(rate)) * (i - basezoom))) "; }";
+        }
+
+        exit(0);
+    }'
+
 Geometric simplifications
 -------------------------