NAME¶
v.in.gns - Imports US-NGA GEOnet Names Server (GNS) country files
into a GRASS vector points map.
KEYWORDS¶
vector, import, gazetteer
SYNOPSIS¶
v.in.gns
v.in.gns help
v.in.gns file=
string [
vect=
string]
[--
overwrite] [--
verbose] [--
quiet]
Flags:¶
- --overwrite
-
Allow output files to overwrite existing files
- --verbose
-
Verbose module output
- --quiet
-
Quiet module output
Parameters:¶
- file=string
-
Uncompressed GNS file from NGA (with .txt extension)
- vect=string
-
Name for output vector map
DESCRIPTION¶
v.in.gns imports US-NGA GEOnet Names Server (GNS) country files
(Gazetteer data) into a GRASS vector points map. The country files can be
downloaded from the NGA GNS Web Server (see below). The script generates a
vector point map. Only original files can be processed (unzip compressed file
first). These GNS files are encoded in UTF-8 which is maintained in the GRASS
database.
NOTES¶
The current DB connection is used to write the database table.
Generally, column names longer that 10 characters are shortened to 10 characters
to meet the DBF column name restrictions. If this is a problem consider
choosing another database driver with
db.connect.
To filter outliers (points outside of a country), the
v.select module can
be used to perform point-in-polygon tests.
v.select saves only the GNS
points falling into a country polygon into the new points map.
SEE ALSO¶
db.connect, v.select
REFERENCES¶
GEOnet Names Server files for countries and territories
Column names explanations
AUTHOR¶
Markus Neteler, MPBA Group, ITC-irst, Trento, Italy
Last changed: $Date: 2011-11-08 10:42:51 +0100 (Tue, 08 Nov 2011) $
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