Changeset 14620

Timestamp:

Aug 22, 2007, 3:09:54 PM (19 years ago)

Author:

eugene

Message:

adding notes

Files:

• branches/eam_branch_20070817/ppSim/notes.txt (added)
• branches/eam_branch_20070817/ppSim/psf.txt (added)
• branches/eam_branch_20070817/psphot/doc/notes.txt (modified) (2 diffs)
• trunk/ppImage/notes.txt (added)

branches/eam_branch_20070817/psphot/doc/notes.txt

@@ +1 @@
+
+2007.08.17
+
+ I am working on a number of cleanup / fixes.  I have made an overhaul
+ of the pmModel APIs, adding function pointers in the pmModel
+ structure to the class-specific utility functions (eg,
+ pmModel->modelFunc is the actual function which is evaluated). 
+
+ TO DO:
+
+ * update pmSourceFitSet to be able to include more than one model
+   type (currently it assumes the sources are all, eg, PSFs).  This is
+   now needed because the old implementation used the function lookups
+   which have been dropped.
+
+ * define a generic API set to handle 2D modelling of a scalar using
+   either polynomials (as the pmPSF code currently does) or an
+   image-based representation (as the psphot sky model currently
+   does).  
+
+   The image-based representation can automatically step down from NxM
+   super pixels to a smaller number based on the density of
+   measurements.  
+
+   Include ways to smooth and regularize the output result.
+
+   This mechanism can be applied to: psf parameters, aperture
+   residual, psf peak-to-flux variations, the psphot background
+   representation.
+
+ * generate and store the output radial profile for objects
+
+ * finish testing and incorportate the CR / EXT measurements
+
+ * adjustments to pixel center based on second derivatives : needed
+   for the sersic models.
+
+ * adjustments to pixel flux for extreme values (r ~ 0) : needed for
+   the sersic models.
+
+ * on psf stars : fall back on a Gaussian.
+
+ * OPTIMIZATIONS !!
+
+ * drop the model sky element : should only be in source->sky,dsky
+
+2006.11.16
 
 ensemble:
@@ -20 +67 @@
   * solve for source amplitudes
   * update models
-
-2006.11.16
 
   * create psSparseBorder to solve matrix equations which have a large