Changeset 41305 for trunk/Ohana/src/opihi/cmd.astro/mkgauss.c

Timestamp:

Mar 10, 2020, 10:52:25 AM (6 years ago)

Author:

eugene

Message:

csystem: save scalar results to variables; mkgauss: add normalization option; read_vectors: add hms and date conversion options

File:

• trunk/Ohana/src/opihi/cmd.astro/mkgauss.c (modified) (3 diffs)

trunk/Ohana/src/opihi/cmd.astro/mkgauss.c

@@ -10 +10 @@
   double x, y, r, f, Xo, Yo;
   Buffer *buf;
+
+  int Normalize = FALSE;
+  if ((N = get_argument (argc, argv, "-norm"))) {
+    Normalize = TRUE;
+    remove_argument (N, &argc, argv);
+  }    
 
   // this should be Nx/2, Ny/2 if not set
@@ -60 +66 @@
   /* f = exp (-r), r = (x^2 / 2Sx) + (y^2 / 2Sy) + Sxy*x*y */
 
+  double Io = Normalize ? 1.0 / (2.0 * M_PI * Sig_x * Sig_y) : 1.0;
+
   in = (float *) buf[0].matrix.buffer;
   for (j = 0; j < Ny; j++) {
@@ -67 +75 @@
       y = j - Yo;
       r = 0.5*x*x/Sx + 0.5*y*y/Sy + x*y*Sxy;
-      f = exp (-r);
+      f = Io * exp (-r);
       *in += f;
     }