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Next: FNy
Up: PLT Command Summary
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Fit [#] [Iterate #]
Cause PLT to call the fitting routine to search for the best fitting
parameters for the model specified with the MOdel command. The
first optional number is the plot group to fit. If this number is
omitted, then Fit will continue to fit the previous group that you
were fitting if that plot group is still visible. For the first use of
Fit
or if the plot group has been COlored OFf then Fit will default
to fitting the lowest numbered group which is visible. LAbel PArm
command controls whether the model parameters are plotted on the right
side of the plot. Fitting continues until Dc2 is less than
0.05. As a default, you will be prompted to continue fitting every
10 iterations. If you wish to increase the number of iterations without
being prompted, then use the Fit Iterate [#]. Thus, Fit I 100,
would allow the program to try up to 100 iterations before you would
be prompted again.
Fit ON [#]
Cause the current model to be plotted on group #. If # is omitted,
the model will be plotted on plot group that was most recently fitted.
Fit OFf
Cause the model to no longer be plotted.
Fit Plot #
Control where the model is evaluated when it plotted. If # is
greater than zero, then the model is evaluated at # points between
the current x-scale Minimum and Maximum. If # is less than 0, then
the model is evaluated at ABS(#) points between the Data Min and Data
Max - i.e., no extrapolation is allowed. If # equals 0, then the
model is evaluated at the values of the data points. (This is the
default.)
Fit Stat Chi|Ml #
Set the default fitting statistic to either c2 or maximum
likelihood. For example, Fit Stat M 2 would vary the fit parameter
to minimize the likelihood function when compared with plot group 2.
   
Next: FNy
Up: PLT Command Summary
Previous: EXit
Web Page Maintained by: Dr. Lawrence E. Brown elwin@redshift.gsfc.nasa.gov
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