Index: trunk/Ohana/src/kapa2/src/DefineSection.c
===================================================================
--- trunk/Ohana/src/kapa2/src/DefineSection.c	(revision 27790)
+++ trunk/Ohana/src/kapa2/src/DefineSection.c	(revision 29938)
@@ -40,2 +40,58 @@
   return (TRUE);
 }
+
+// define the section, but do not create a graph or image 
+int DefineSectionByImage (int sock) {
+  
+  int N, bg;
+  char name[128];
+  double x, y, dx, dy;
+  int dXm, dXp, dYm, dYp;
+  double x0, y0, x1, y1, expand;
+  Section *section;
+  Graphic *graphic;
+  KapaImageWidget *image;
+
+  KiiScanMessage (sock, "%s %lf %lf %d", name, &x, &y, &bg);
+
+  N = GetSectionByName (name);
+  section = GetSectionByNumber (N);
+  image = section->image;
+  if (!image) {
+    fprintf (stderr, "no image to define section\n");
+    return (TRUE);
+  }
+  SetActiveSectionByNumber (N);
+
+  graphic = GetGraphic ();
+
+  GetGraphBoundary (section, &x0, &y0, &x1, &y1, &dXm, &dXp, &dYm, &dYp);
+
+  expand = 1.0;
+  if (image[0].picture.expand > 0) {
+    expand = image[0].picture.expand;
+  }
+  if (image[0].picture.expand < 0) {
+    expand = 1.0 / fabs((double)image[0].picture.expand);
+  }
+
+  // pixel dimensions of the imaging region + boundary
+  dx = image[0].image[0].matrix.Naxis[0]*expand + x1;
+  dy = image[0].image[0].matrix.Naxis[1]*expand + y1;
+
+  section[0].x = x;
+  section[0].y = y;
+  section[0].bg = bg;
+  section[0].dx = dx / graphic[0].dx;
+  section[0].dy = dy / graphic[0].dy;
+
+  // if (section[0].x != x)   MoveSection = TRUE;
+  // if (section[0].y != y)   MoveSection = TRUE;
+  // if (section[0].dx != dx) MoveSection = TRUE;
+  // if (section[0].dy != dy) MoveSection = TRUE;
+
+  SetSectionSizes (section);
+  Refresh ();
+
+  return (TRUE);
+}