Re: conf_map_counts and C statistics

On Wed, Mar 19, 2003 at 19:20 -0500, Marc Audard wrote:
> Hi,
>
> I would like to know if there is a way to have conf_map_counts
> calculate the map with the Cash statistics instead of the chisqr statistics.
> This should in principle be feasible, but I have the impression that
> despite setting the Cash statistics ( set_fit_statistic ("cash"); ),
> conf_map_counts still uses the chisqr statistics.
>
> Thanks,
>
> 	Marc Audard


Hi Marc,

Despite the fact that isis prints messages which refer to the
chi-square statistic, the Cash statistic is actually being
computed once you do a

  set_fit_statistic ("cash");

One way to verify this for yourself is to provide a
user-defined fit-statistic implemented in slang, and have that
print some message each time the function is called.  The help
page for 'add_slang_statistic' shows how to do this.

In the next release, I'll make sure the name of the statistic
is printed correctly.

Thanks,

John

--
John C. Houck                       MIT Center for Space Research
NE80-6005: 617-253-3849                   77 Massachusetts Avenue
42:21:55.105N, 71:05:28.122W             Cambridge, MA 02139-4307
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