[GRASS-user] Re: make a raster index in GRASS

[G. Allegri]

In case you have compiled gdal with grass support you could access
grass rasters directly from gdaltindex, pointing to the cellhd files.

2008/7/16 Ivan Shmakov <ivan at theory.asu.ru>:
>>>>>> Jamie Adams <jaadfoo at gmail.com> writes:
>
>  > Hello all, I'd like to generate a raster index polygon file, just
>  > like gdaltindex does, but using GRASS rasters as input.  Is there a
>  > command I'm overlooking?
>
>        It may depend on the goal, but v.in.region(1) may be of some
>        use.
>
>  > If not, any ideas on how to do this?
>
>        Iterating over the set of rasters can be implemented using
>        g.mlist(1) and the standard Shell `while' and `read' commands,
>        like:
>
> $ g.mlist type=rast pattern=2008-\*-foo \
>      | while read r ; do \
>            : ... do something... ; \
>        done
>
>        And the vectors can be concatenated using v.patch(1), like:
>
>   v.in.region output=tmp_vector
>   v.patch  -a output=resulting_vector input=tmp_vector
>
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