turf-deviation
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Comparing version 0.0.1 to 0.0.2
{ | ||
"name": "turf-deviation", | ||
"version": "0.0.1", | ||
"version": "0.0.2", | ||
"description": "turf deviation module", | ||
@@ -5,0 +5,0 @@ "main": "index.js", |
turf-deviation | ||
============== | ||
[![build status](https://secure.travis-ci.org/Turfjs/turf-deviation.png)](http://travis-ci.org/Turfjs/turf-deviation) | ||
Calculates the standard deviation value of a field for points within a set of polygons. | ||
```javascript | ||
var deviation = require('turf-deviation') | ||
var point = require('turf-point') | ||
var polygon = require('turf-polygon') | ||
var featurecollection = require('turf-featurecollection') | ||
var poly1 = polygon([[[0,0],[10,0],[10,10], [0,10]]]) | ||
var poly2 = polygon([[[10,0],[20,10],[20,20], [20,0]]]) | ||
var polyFC = featurecollection([poly1, poly2]) | ||
var pt1 = point(1,1, {population: 500}) | ||
var pt2 = point(1,3, {population: 400}) | ||
var pt3 = point(14,2, {population: 600}) | ||
var pt4 = point(13,1, {population: 500}) | ||
var pt5 = point(19,7, {population: 200}) | ||
var ptFC = featurecollection([pt1, pt2, pt3, pt4, pt5]) | ||
var inField = 'population' | ||
var outField = 'pop_deviation' | ||
var deviated = deviation(polyFC, ptFC, inField, outField) | ||
console.log(deviated.features[0].properties.pop_deviation) | ||
console.log(deviated.features[1].properties.pop_deviation) | ||
``` |
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