@turf/truncate

@turf/truncate

truncate

Takes a GeoJSON Feature or FeatureCollection and truncates the precision of the geometry.

Parameters

• geojson GeoJSON any GeoJSON Feature, FeatureCollection, Geometry or GeometryCollection.

• options Object Optional parameters (optional, default {})

  • options.precision number coordinate decimal precision (optional, default 6)
  • options.coordinates number maximum number of coordinates (primarly used to remove z coordinates) (optional, default 3)
  • options.mutate boolean allows GeoJSON input to be mutated (significant performance increase if true) (optional, default false)

Examples

var point = turf.point([
    70.46923055566859,
    58.11088890802906,
    1508
]);
var options = {precision: 3, coordinates: 2};
var truncated = turf.truncate(point, options);
//=truncated.geometry.coordinates => [70.469, 58.111]

//addToMap
var addToMap = [truncated];

Returns GeoJSON layer with truncated geometry

This module is part of the Turfjs project, an open source module collection dedicated to geographic algorithms. It is maintained in the Turfjs/turf repository, where you can create PRs and issues.

Installation

Install this single module individually:

$ npm install @turf/truncate

Or install the all-encompassing @turf/turf module that includes all modules as functions:

$ npm install @turf/turf

Similar packages

Other packages similar to @turf/truncate

geojson-precision

The geojson-precision package allows you to set the precision of GeoJSON coordinates. It is similar to @turf/truncate in that it helps reduce the size of GeoJSON files by limiting the number of decimal places in coordinates. However, it is a standalone package and not part of a larger geospatial library like Turf.js.

simplify-geojson

The simplify-geojson package is used to simplify GeoJSON geometries by reducing the number of points in the geometries. While it does not specifically truncate coordinate precision, it serves a similar purpose of reducing the size and complexity of GeoJSON data. It is more focused on simplifying shapes rather than just truncating coordinates.