[Gdal-dev] ogr2ogr hundreds of shapefiles
Martel, Christian
Christian.Martel at drdc-rddc.gc.ca
Thu Apr 26 14:09:36 EDT 2007
Matt,
Thanks. It is what I was looking for (a windows script).
However, "(" and ")" were not correct in the if clause and it lacks the
-nln parameter in else clause.
Here is the correct script :
mkdir merged
for %%f in (ABC*.shp) do (
if not exist merged\all.shp (
ogr2ogr -f "esri shapefile" merged\all.shp %%f) else (
ogr2ogr -f "esri shapefile" -update -append merged\all.shp %%f
-nln all)
)
Christian
> -----Original Message-----
> From: Matt Wilkie [mailto:matt.wilkie at gov.yk.ca]
> Sent: 26 avril 2007 12:05
> To: Martel, Christian
> Cc: gdal-dev at lists.maptools.org
> Subject: Re: [Gdal-dev] ogr2ogr hundreds of shapefiles
>
> Martel, Christian wrote:
> > Hi List,
> >
> > How can I merge hundreds of shapefiles with wildcard in
> input name (eg.
> > fileABC*.shp) ? Does ogr2ogr allow this ?
> > Is it better to write a python script (opening each file, reading
> > geometries, write them to output file, etc.) ?
>
> To complement Howard's script, here is what will work in a
> Windows cmd shell (double % to put in a script, %f --> %%f):
>
> mkdir merged
> for %f in (*wetland*.shp) do (
> (if not exist merged\wetlands.shp ogr2ogr -f "esri shapefile"
> merged\wetlands.shp %f) else (
> ogr2ogr -f "esri shapefile" -update -append merged\wetlands.shp %f
> )
> )
>
> The trick is to use the first input to create a new
> shapefile, and thereafter only update and append. See the end
> of http://www.gdal.org/ogr/drv_shapefile.html
>
> cheers,
>
> --
> matt wilkie
> --------------------------------------------
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> Yukon Department of Environment
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>
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