Bugs: dmgroup

For detailed information and examples of running this tool, refer to the dmgroup ahelp file.

Caveats

Minimum and maximum values for the binspec parameter

If there is no min/max given in the binspec parameter, the tool returns the min/max for the datatype for the specified column. If this is a large range, it will fail with

# dmgroup (CIAO): dsALLOCERR -- ERROR: Could not allocate memory.

Workarounds:

Provide a binning specification in the binspec parameter.
If the column range is missing or too large, one may be forced by filtering the column. For example, to establish a PHA range:
```
unix% pset dmgroup infile="acis_evt2.fits[pha=1:4096]" 
```