Index: /branches/eam_branches/ipp-20130711/Ohana/src/opihi/cmd.data/Makefile
===================================================================
--- /branches/eam_branches/ipp-20130711/Ohana/src/opihi/cmd.data/Makefile	(revision 35874)
+++ /branches/eam_branches/ipp-20130711/Ohana/src/opihi/cmd.data/Makefile	(revision 35875)
@@ -143,4 +143,5 @@
 $(SRC)/vmaxwell.$(ARCH).o          \
 $(SRC)/vgrid.$(ARCH).o		   \
+$(SRC)/vlist.$(ARCH).o		   \
 $(SRC)/vload.$(ARCH).o		   \
 $(SRC)/vzload.$(ARCH).o		   \
Index: /branches/eam_branches/ipp-20130711/Ohana/src/opihi/cmd.data/init.c
===================================================================
--- /branches/eam_branches/ipp-20130711/Ohana/src/opihi/cmd.data/init.c	(revision 35874)
+++ /branches/eam_branches/ipp-20130711/Ohana/src/opihi/cmd.data/init.c	(revision 35875)
@@ -133,4 +133,5 @@
 int vmaxwell         PROTO((int, char **));
 int vload            PROTO((int, char **));
+int vlist            PROTO((int, char **));
 int vzload           PROTO((int, char **));
 int vstats           PROTO((int, char **));
@@ -290,4 +291,5 @@
   {1, "vgrid",        vgrid,            "generate an image from a triplet of vectors"},
   {1, "vhistogram",   histogram,        "generate histogram from vector"},
+  {1, "vlist",        vlist,            "append values to a vector from command line"},
   {1, "vload",        vload,            "load vectors as overlay on image display"},
   {1, "vmaxwell",     vmaxwell,         "fit a Maxwellian to a vector"},
Index: /branches/eam_branches/ipp-20130711/Ohana/src/opihi/cmd.data/vlist.c
===================================================================
--- /branches/eam_branches/ipp-20130711/Ohana/src/opihi/cmd.data/vlist.c	(revision 35875)
+++ /branches/eam_branches/ipp-20130711/Ohana/src/opihi/cmd.data/vlist.c	(revision 35875)
@@ -0,0 +1,62 @@
+# include "data.h"
+
+int vlist (int argc, char **argv) {
+  
+  int i, N;
+  Vector *vec;
+  
+  int APPEND = FALSE;
+  if ((N = get_argument (argc, argv, "-append"))) {
+    APPEND = TRUE;
+    remove_argument (N, &argc, argv);
+  }
+
+  int INT = FALSE;
+  if ((N = get_argument (argc, argv, "-int"))) {
+    if (APPEND) {
+      gprint (GP_ERR, " ERROR : cannot mix -append and -int\n");
+      return (FALSE);
+    }
+    INT = TRUE;
+  }
+
+  if (argc < 3) {
+    gprint (GP_ERR, "USAGE: vlist [-append] [-int] vector value value ...\n");
+    gprint (GP_ERR, "    -int : resulting vector is integer type (values are truncated to integer)\n");
+    gprint (GP_ERR, " -append : append value to end of vector (otherwise deleted)\n");
+    return (FALSE);
+  }
+
+  if ((vec = SelectVector (argv[1], ANYVECTOR, TRUE)) == NULL) return (FALSE);
+
+  // for append, type comes from input vector
+  if (APPEND) {
+    INT = (vec[0].type == OPIHI_INT);
+  }
+
+  int Nitem = argc - 2;
+  int Noffset = APPEND ? vec[0].Nelements : 0;
+  vec[0].Nelements = APPEND ? vec[0].Nelements + Nitem : Nitem;
+
+  if (INT) {
+    vec[0].type = OPIHI_INT;
+    REALLOCATE (vec[0].elements.Int, opihi_int, vec[0].Nelements);
+    for (i = 0; i < Nitem; i++) {
+      vec[0].elements.Int[i + Noffset] = atoi (argv[i+2]);
+    }
+  } else {
+    vec[0].type = OPIHI_FLT;
+    REALLOCATE (vec[0].elements.Flt, opihi_flt, vec[0].Nelements);
+    for (i = 0; i < Nitem; i++) {
+      vec[0].elements.Flt[i + Noffset] = atof (argv[i+2]);
+    }
+  }
+
+  return (TRUE);
+}
+
+// vlist name 0 1 2 3
+// argc = 6
+// Nitem = 4
+// Noffset = 0
+// Int[0,1,2,3] = argv[2,3,4,5]