Changeset 25351 for branches/eam_branches/20090715/psModules/src/objects/models/pmModel_SERSIC.c

Timestamp:

Sep 13, 2009, 4:49:08 PM (17 years ago)

Author:

eugene

Message:

clean up comments, notes on 0.5 PIX, drop old dPAR test (ill-defined), force sky == 0.0

File:

• branches/eam_branches/20090715/psModules/src/objects/models/pmModel_SERSIC.c (modified) (6 diffs)

branches/eam_branches/20090715/psModules/src/objects/models/pmModel_SERSIC.c

@@ -1 +1 @@
 /******************************************************************************
  * this file defines the SERSIC source shape model.  Note that these model functions are loaded
- * by pmModelGroup.c using 'include', and thus need no 'include' statements of their own.  The
+ * by pmModelClass.c using 'include', and thus need no 'include' statements of their own.  The
  * models use a psVector to represent the set of parameters, with the sequence used to specify
  * the meaning of the parameter.  The meaning of the parameters may thus vary depending on the
- * specifics of the model.  All models which are used a PSF representations share a few
+ * specifics of the model.  All models which are used as a PSF representations share a few
  * parameters, for which # define names are listed in pmModel.h:
 
@@ -32 +32 @@
 # define PM_MODEL_FIT_STATUS      pmModelFitStatus_SERSIC
 
+// the model is a function of the pixel coordinate (pixcoord[0,1] = x,y)
+// 0.5 PIX: the parameters are defined in terms of pixel coords, so the incoming pixcoords
+// values need to be pixel coords
 psF32 PM_MODEL_FUNC (psVector *deriv,
                      const psVector *params,
@@ -223 +226 @@
 
 // make an initial guess for parameters
+// 0.5 PIX: moments and peaks are in pixel coords, thus so are model parameters
 bool PM_MODEL_GUESS (pmModel *model, pmSource *source)
 {
@@ -247 +251 @@
     if (!isfinite(shape.sxy)) return false;
 
-    // XXX PAR[PM_PAR_SKY]  = moments->Sky;
     PAR[PM_PAR_SKY]  = 0.0;
     PAR[PM_PAR_I0]   = peak->flux;
@@ -429 +432 @@
 bool PM_MODEL_FIT_STATUS (pmModel *model)
 {
-
-    psF32 dP;
     bool  status;
 
@@ -436 +437 @@
     psF32 *dPAR = model->dparams->data.F32;
 
-    dP = 0;
-    dP += PS_SQR(dPAR[PM_PAR_SXX] / PAR[PM_PAR_SXX]);
-    dP += PS_SQR(dPAR[PM_PAR_SYY] / PAR[PM_PAR_SYY]);
-    dP = sqrt (dP);
-
     status = true;
-//    status &= (dP < 0.5);
     status &= (PAR[PM_PAR_I0] > 0);
     status &= ((dPAR[PM_PAR_I0]/PAR[PM_PAR_I0]) < 0.5);
-
-    fprintf (stderr, "SERSIC status pars: dP: %f, I0: %f, S/N: %f\n",
-             dP, PAR[PM_PAR_I0], (dPAR[PM_PAR_I0]/PAR[PM_PAR_I0]));
 
     return status;