turf-min


turf min module

$3

Calculates the minimum value of a field for Point features within a set of Polygon features.

$3

| parameter | type | description |
| ---------- | ----------------- | --------------------------------------- |
| polygons | FeatureCollection | a FeatureCollection of Polygon features |
| points | FeatureCollection | a FeatureCollection of Point features |
| inField | string | the field in input data to analyze |
| outField | string | the field in which to store results |

$3

``js
var polygons = turf.featurecollection([
turf.polygon([[
[72.809658, 18.961818],
[72.809658, 18.974805],
[72.827167, 18.974805],
[72.827167, 18.961818],
[72.809658, 18.961818]
]]),
turf.polygon([[
[72.820987, 18.947043],
[72.820987, 18.95922],
[72.841243, 18.95922],
[72.841243, 18.947043],
[72.820987, 18.947043]
]])
]);
var points = turf.featurecollection([
turf.point([72.814464, 18.971396], {population: 200}),
turf.point([72.820043, 18.969772], {population: 600}),
turf.point([72.817296, 18.964253], {population: 100}),
turf.point([72.83575, 18.954837], {population: 200}),
turf.point([72.828197, 18.95094], {population: 300})]);

var minimums = turf.min(
polygons, points, 'population', 'min');

var result = turf.featurecollection(
points.features.concat(minimums.features));

//=result
`

Installation

Requires nodejs.

`sh
$ npm install turf-min
`

Tests

`sh
$ npm test
``