Re: Bug with set_rebin_error_hook

On Fri, Feb 24, 2006 at 20:21 -0500, Nat Butler wrote:
> Hi,
> 
> I've been having this problem since version 1.2.9 or so:
> 
> isis> define rebin_error_hook (orig_cts, orig_stat_err, grouping) {
>         return sqrt(rebin_array (orig_stat_err^2, grouping));
>       }
> isis> set_rebin_error_hook (1, "rebin_error_hook");
> *** Failed:  setting dataset 1 rebin error hook = 'rebin_error_hook'
> /opt/isis-1.3.2/share/hist-cmds.sl:593:set_rebin_error_hook:Run-Time Error
> 
> Any ideas?  I'm running debian linux, 2.6 series.  The problem is there if
> I use the precompiled binaries or build my own.
> 

It looks like a namespace issue.  It should work if you declare
the rebin_error_hook function to be public:

isis> public define rebin_error_hook (orig_cts, orig_stat_err, grouping) {
              return sqrt(rebin_array (orig_stat_err^2, grouping));
            };
isis> set_rebin_error_hook (1, "rebin_error_hook");
isis>

For the next release, I'll modify the function so that it can
also take a function reference:

    set_rebin_error_hook (1, &rebin_error_hook)
    
then the 'public' qualifier will no longer be necessary.

Thanks,
-John
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