Re: residual counts

On Mon, Apr 26, 2004 at 12:55 -0400, Saku Vrtilek wrote:
> I use 
> 
> m = get_model_counts(1);
> 
> and
> 
>  d = get_data_counts(1);
> 
> 
> What do I do to get the residuals?
> 

The residuals can be computed interactively as the difference
of the 'value' fields of the structures returned by those
functions. You can use the 'print' function to interactively
determine the fields of a Struct_Type and to print out the
values of its fields.

isis> m = get_model_counts(1); 
isis> d = get_data_counts(1);  
isis> print(m);                
    bin_lo = Double_Type[512]
    bin_hi = Double_Type[512]
    value = Double_Type[512]
    err = NULL
isis> print(d);                
    bin_lo = Double_Type[512]
    bin_hi = Double_Type[512]
    value = Double_Type[512]
    err = Double_Type[512]
isis> print(m.value - d.value);
.

Alternatively, to save those numbers in an ascii file, you
could use the 'writecol' function and provide a filename:

isis> writecol ("file.txt", m.value, d.value, m.value-d.value);

Thanks,
-John
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