Index: trunk/Ohana/src/opihi/cmd.data/fit1d.c
===================================================================
--- trunk/Ohana/src/opihi/cmd.data/fit1d.c	(revision 24081)
+++ trunk/Ohana/src/opihi/cmd.data/fit1d.c	(revision 27817)
@@ -53,9 +53,9 @@
     return (FALSE);
   }
-  REQUIRE_VECTOR_FLT (xvec, FALSE); 
-  REQUIRE_VECTOR_FLT (yvec, FALSE); 
+  CastVector (xvec, OPIHI_FLT);
+  CastVector (yvec, OPIHI_FLT);
 
   if (Weight) {
-    REQUIRE_VECTOR_FLT (dyvec, FALSE); 
+    CastVector (dyvec, OPIHI_FLT);
     if (xvec[0].Nelements != dyvec[0].Nelements) {
       gprint (GP_ERR, "vectors must have same length\n");