Index: trunk/Ohana/src/opihi/cmd.data/line.c
===================================================================
--- trunk/Ohana/src/opihi/cmd.data/line.c	(revision 13479)
+++ trunk/Ohana/src/opihi/cmd.data/line.c	(revision 33662)
@@ -3,7 +3,14 @@
 int line (int argc, char **argv) {
   
-  int kapa;
+  int kapa, N;
   Graphdata graphmode;
   float x[2], y[2];
+
+  /* FracPositions uses coordinates of 0-1 relative to axis range */
+  int FracPositions = FALSE;
+  if ((N = get_argument (argc, argv, "-frac"))) {
+    remove_argument (N, &argc, argv);
+    FracPositions = TRUE;
+  } 
 
   if (!style_args (&graphmode, &argc, argv, &kapa)) return FALSE;
@@ -18,4 +25,11 @@
   y[1] = atof(argv[5]);
 
+  if (FracPositions) {
+    x[0] =  x[0] * (graphmode.xmax - graphmode.xmin) + graphmode.xmin;
+    y[0] =  y[0] * (graphmode.ymax - graphmode.ymin) + graphmode.ymin;
+    x[1] =  x[1] * (graphmode.xmax - graphmode.xmin) + graphmode.xmin;
+    y[1] =  y[1] * (graphmode.ymax - graphmode.ymin) + graphmode.ymin;
+  }    
+
   /* set point style and errorbar mode (these are NOT sticky) */
   graphmode.style = 0;