georender-clip

polygon clipping tool for georender data

usage

usage: georender-clip [INFILE] {OPTIONS}

    -i --infile      Read georender data from INFILE.
    -f --format      Set input and output format.
  --if --in-format   Set input format: base64, hex, lp (default)
  --of --out-format  Set output format: base64, hex, lp (default)

  --xy   Use cartesian coordinates.
  --geo  Use geodetic great circles in spherical coordinates. (default)

  --divide GEOMETRY      Divide INFILE by GEOMETRY.
  --intersect GEOMETRY   Intersect GEOMETRY with INFILE.
  --union GEOMETRY       Union GEOMETRY with INFILE.
  --difference GEOMETRY  Subtract GEOMETRY from INFILE.
  --exclude GEOMETRY     Exclude GEOMETRY from INFILE.
  --show GEOMETRY        Print GEOMETRY instead of clipping.

GEOMETRY can be a json file of geojson or geojson coordinate arrays or
a grid type (below. disambiguate files from grid types with leading ./ or /

  icosphere:N  build an icosphere of subdivision number N

example

var georenderClip = require('georender-clip')
var A = Buffer.from('0364d0860303cdcccc3d0000003f9a99993f0000003f0000003f0000c03f0100010200', 'hex')
var B = [[0,0],[0,1],[1,0]]
var opts = Object.assign({ mode: 'divide' }, require('pclip/xy'))
console.log(georenderClip(A, B, opts))

api

var georenderClip = require('georender-clip')

var buf = georenderClip(A, B, opts)

Clip subject geometry A with clip geometry B using algorithm opts.mode.

One of A and B must be a georender Buffer and the other must be geojson coordinates array data as supported by pclip.

All opts are passed to pclip. Consult pclip documentation for more information.

install

npm install georender-clip     # for the library
npm install -g georender-clip  # for the command

license

bsd