tgvpf - generate scenery polygons from VPF data

tgvpf [ opts ] <db> <lib> <cov> <fea>

tgvpf uses the following command-line options:

--chunk=chunk

A 10x10 degree chunk for building polygons, i.e. "w080n40". If you do not specify this or the --min-*/--max-* attributes, tgvpf will build polygons for the whole area covered by the library.

--min-lon=degrees

The minimum longitude for building polygons (defaults to -180 deg).

--max-lon=degrees

The maximum longitude for building polygons (defaults to 180 deg).

--min-lat=degrees

The minimum latitude for building polygons (defaults to -90 deg).

--max-lat=degrees

The maximum latitude for building polygons (defaults to 90 deg).

--area=area-type

The area type to build (defaults to "Default"). See $FG_ROOT/materials for other options.

--width=meters

The width of polygon to build for line or point features (defaults to 50m for lines, 500m for points).

--work-dir=directory

The directory where the polygons should be saved (defaults to the current directory).

--att=property:value

Build only features that have the specified property/value pair. This will be combined with other --att specifications using a logical and.

--att=!property:value

Build only features that do not have the specified property/value pair. This will be combined with other --att specifications using a logical and.

tgvpf takes the following, required parameters:

db

The base directory of the VPF database, i.e. "/cdrom/vmaplv0" (the directory must contain files named dht and lat).

lib

The library name, i.e. "noamer" for North America.

cov

The coverage name, i.e. "hydro" for hydrography.

fea

The feature name, i.e. "inwatera" for inland water.