[daip] JMFIT max points

Eric Greisen egreisen at nrao.edu
Thu Nov 29 10:49:24 EST 2007


Alan Aversa writes:
 > I want to increase the AIPS task JMFIT's maximum number of fitting points
 > from 10,000 to 100,000. Since I have a binary distribution of AIPS on Intel
 > Mac OS X Leopard, I cannot rebuild the JMFIT.EXE from the source. Unless
 > there's an easier way, could you change MAXPTS to 100,000 and email me a new
 > JMFIT.EXE?

I can increase the max size for everyone, but I am concerned about
opening that much freedom in Chi-squared space.  JMFIT can already
give rather bad solutions, esp for noisy data or objects that are not
Gaussian in a significant way.  In performing Monte Carlo tests I
found that the dispersion in answers went up as I allowed the window
around the object to become bigger.  For what do you need such a large
window.

Eric Greisen




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