[GRASS5] [bug #2238] (grass) r.series: support for wildcards in input filenames

[H B]

> > > It would be nice if r.series would accept wildcards for the input
> > > maps.
> > > 
> > > e.g.
> r.series input=insitu_data.* output=insitu_data.stddev method=stddev
> > > 
> > > for:
> > > insitu_data.001
> > > insitu_data.002
> > > ...
> > > insitu_data.052
> > 
> > That may also true for several other modules; in which case, it 
> > might be better to figure out how to build this into G_parser().
> > 
> > > such as the g.mremove script does. [0-9] expansions etc would be 
> > > nice too, but not critical.
> > 
> > g.mremove is a shell script, which makes implementing shell
> > substitutions somewhat easier.
>>
>> r.out.mpeg supports wildcards. Maybe this could be moved somehow
into
>> the parser.
>
> That code (gee_wildfiles()) is a hack; it spawns an "ls" command via
> system() to generate the list of filenames.
> 
> The issue isn't figuring out how to implement wildcard expansion;
> that's easy enough to do without using system() hacks. The issue is
> deciding how to make use of it within GRASS.


A possible (temporary) solution: `g.mlist` (just updated in CVS).

for the example above, you might use:

r.series input="`g.mlist pattern='insitu_data.*' sep=,`" \
    output=insitu_data.stddev method=stddev


Note the g.mlist script also supports regular expressions for picking
map names, so there's quite a bit of flexability there.



regards,
Hamish


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