Flags:¶

-f

List supported OGR formats and exit

-l

List available OGR layers in data source and exit

-o

Override projection check (use current location’s projection)
Assume that the dataset has the same projection as the current location

--overwrite

Allow output files to overwrite existing files

--help

Print usage summary

--verbose

Verbose module output

--quiet

Quiet module output

--ui

Force launching GUI dialog

Parameters:¶

input=string [required]

Name of OGR datasource to be imported

layer=string[,string,...]

OGR layer name. If not given, all available layers are imported

output=name

Name for output vector map (default: input)

extent=string

Output vector map extent
Options: input, region
Default: input
input: extent of input map
region: extent of current region

encoding=string

Encoding value for attribute data

snap=float

Snapping threshold for boundaries (map units)
’-1’ for no snap
Default: 1e-13

epsg=integer

EPSG projection code
Options: 1-1000000

datum_trans=integer

Index number of datum transform parameters
-1 to list available datum transform parameters
Options: -1-100

Supported Vector Formats¶

The list of actually supported formats can be printed by -f flag.

Topology cleaning¶

The snap threshold defines the maximal distance from one to another vertex in map units (for latitude-longitude locations in degree). If there is no other vertex within snap distance, no snapping will be done. Note that a too large value can severely damage area topology, beyond repair.

Post-processing: Snapped boundaries may need to be cleaned with v.clean, using its tools break,rmdupl,rmsa. For details, refer to the v.clean manual page.