morganherlocker

{
  "distance": 0.04162350800625099,
  "curve": 0.009039173454286032,
  "oneway=yes": 1.0,
  "highway=trunk_link": 0.0,
  "highway=primary": 0.0,
  "lanes=2": 0.0,
  "maxspeed=35 mph": 0.0,
  "lanes=3": 0.0,
  "highway=secondary": 0.0,

morganherlocker

• Contributor: @morganherlocker
• Task: Hausdorf Distance
• Issue: Turfjs/turf#1286
• Estimated Time: 5 hours
• Deadline: 3/10/18
• Requested Budget: $50
• Impact: Allows you to compare the similarity between two lines to find the most similar in a Collection or Set of lines.

morganherlocker

cat line-delimitted-geo-data.json | node to-collection.js > valid-geojson.json

morganherlocker

JSON.stringify(require('tilebelt').tileToGeoJSON(require('tilebelt').quadkeyToTile('1231002')))

morganherlocker

var through2 = require('through2')
var byline = require('byline')

process.stdin
.pipe(byline.createStream())
.pipe(through2(function(chunk, enc, next){
  var data = JSON.parse(chunk.toString())
  
  this.push(toGeoJSON(data))

morganherlocker

var through2 = require('through2')
var fs = require('fs')
var byline = require('byline')

var combine = through2(function(chunk, enc, next){
  console.log(chunk.toString())
  console.log('--')
  next()
})

morganherlocker

var fc = // ... a featurecollection of polygons and multipolygons

var polys = turf.featurecollection([])

fc.features.forEach(function(poly){
  if (poly.geometry.type === 'Polygon') {
    polys.features.push(poly)
  } else if (poly.geometry.type === 'MultiPolygon') {
    // start max area at -Infinity
    var max = {

morganherlocker

var cover = require('tile-cover')
var tilebelt = require('tilebelt')
var turf = require('@turf/turf')

var features = [
    {
      "type": "Feature",
      "properties": {},
      "geometry": {
        "type": "Point",

morganherlocker

var pts = // my point featurecollection
var polys = // my poly featurecollection

var tree = rbush()

polys.features.forEach(function(poly, i){
  var bbox = turf.bbox(poly)
  var idx = {
    minX: bbox[0],
    minY: bbox[1],

morganherlocker

var pts = // my point featurecollection
var polys = // my poly featurecollection

pts.features = pts.features.filter(function(pt){
  var isInside = false
  polys.features.forEach(function(poly){
    if(turf.inside(pt, poly)) isInside = true
  })
  return isInside
})