[GRASS-user] import a folder full of shapefiles and reproject
glynn at gclements.plus.com
Thu Jul 24 09:13:05 EDT 2008
Moritz Lennert wrote:
> >>> Use ogr2ogr to reproject Shapefiles outside GRASS (it accepts
> >>> directory of shapefiles as input as well as single shapefiles) and
> >>> then import them all with v.in.ogr. You can automate v.in.ogr in
> >>> Shell using "for in do" syntax (plenty of examples in the archive or
> >>> Google it).
> >> I don't think you actually need a for-loop. From the v.in.ogr man page:
> >> layer=string[,string,...] OGR layer name. If not given, all available
> >> layers are imported
> >> So, normally, if you don't give a layer all the shapefiles in the
> >> directory (dsn=) will be imported.
> > Note this loads the Shapefiles as *layers* (in the GRASS meaning of it)
> > of a single output vector map. Not necessarily what one might want.
> No definitely not. Didn't know that. IMHO this should be changed...
If you want to load multiple files as individual maps, run v.in.ogr in
I don't see any reason to add this functionality to every *.in.*
module, and even less reason to add it to some modules but not others.
In general, each *.in.* module generates a single map. The only
exception which I can think of is for multi-channel (e.g. RGB) raster
files, where each channel is imported as a separate raster map (GRASS
itself doesn't support multiple channels in a raster map).
Glynn Clements <glynn at gclements.plus.com>
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