toposimplify - Man Page
simplifies and filters TopoJSON
Synopsis
toposimplify [options] [file]
Description
Given an input topology, assigns a z-value to every arc coordinate according to a configurable weight function, and then generates an output topology where every arc coordinate whose z-value is lower than a configurable minimum weight is removed. Only the x and y dimensions of the coordinates are preserved in the returned topology.
Options
- -h, --help
Output usage information.
- -V, --version
Output the version number.
- -o, --out file
Specify the output TopoJSON file name. Defaults to - for stdout.
- -p, --planar-area value
Specify simplification threshold value as the minimum planar triangle area, typically in square pixels.
- -P, --planar-quantile value
Specify simplification threshold value as the minimum quantile of planar triangle areas. The value should be in the range [0, 1].
- -s, --spherical-area value
Specify simplification threshold value as the minimum spherical triangle area (spherical excess), in steradians.
- -S, --spherical-quantile value
Specify simplification threshold value as the minimum quantile of spherical triangle area (spherical excess. The value should be in the range [0, 1].
- -f, --filter-detached
Remove detached rings that are smaller than the simplification threshold after simplifying.
- -F, --filter-all
Remove any rings that are smaller than the simplification threshold after simplifying.
See Also
Referenced By
geo2topo(1), topo2geo(1), topomerge(1), topoquantize(1).