[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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