[OSGeo-Discuss] methods for programatically adding fields to shapefiles

[Tyler Erickson]

I am interested in approaches for adding a populated field to a shapefile
(for example, adding a new field named 'source_url' with the value
'http://somewebsite.com').  I would like to do this for several thousand
files.

At first I thought that I might be able to accomplish it using ogr2org with
a sql clause, such as:

ogr2ogr -sql "select *, 'http://somewebsite.com' as source_url from infile"
outfile.shp infile.shp

but that didn't work since ogr2ogr supports a limited set of SQL, described
at:
http://www.gdal.org/ogr/ogr_sql.html

Any ideas on how to accomplish this? (I would prefer suggestions that can be
scripted with python.)

- Tyler
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