Index: trunk/Ohana/src/opihi/cmd.astro/init.c
===================================================================
--- trunk/Ohana/src/opihi/cmd.astro/init.c	(revision 37807)
+++ trunk/Ohana/src/opihi/cmd.astro/init.c	(revision 38062)
@@ -14,4 +14,5 @@
 int czcplot                 PROTO((int, char **));
 int cdensify                PROTO((int, char **));
+int cdhistogram             PROTO((int, char **));
 int drizzle                 PROTO((int, char **));
 int flux                    PROTO((int, char **));
@@ -77,5 +78,6 @@
   {1, "czplot",      czplot,       "plot scaled vectors in sky coordinates"},
   {1, "czcplot",     czcplot,      "plot color-scaled vectors in sky coordinates"},
-  {1, "cdensify",    cdensify,      "vectors to density history on projection"},
+  {1, "cdensify",    cdensify,     "vectors to density history on projection"},
+  {1, "cdhistogram", cdhistogram,  "vectors to 3D histogram on projection"},
   {1, "drizzle",     drizzle,      "transform image to image"},
   {1, "flux",        flux,         "flux in a convex contour"},