Geo-shapefile-parser NPM

geo-shapefile-parser

fork from calvinmetcalf/shapefile-js and not change the.prj.

Pure JavaScript library for parsing Shapefiles, returns GeoJson projected.

Usage

For use in node, rollup, webpack and where ever ESM modules are used we have a lovely package you can install via npm or yarn or whatever.

npm i geo-shapefile-parser

API

There are 3 ways to use it:

1. you can pass it a url to a shapefile, either to the shapefile itself (with or without the .shp suffix)

	import shp from 'shpjs';
	//for the shapefiles in the folder called 'files' with the name pandr.shp
	const geojson = await shp("files/pandr.shp");

or you can pass it a url to a a .zip file which contains the shapefile

	//for the shapefiles in the files folder called pandr.shp
	const geojson = await shp("files/pandr.zip");

2. you can pass in in a binary buffer (ArrayBuffer, TypedArray, DataView, Node Buffer) containing a zip file containing at least one shapefile like from a file in node:

// in node
const data = await fs.readFile('./path/to/shp.zip');
const geojson = await shp(data);

or the File API in the browser

// in browser from some sort of file upload
const data = await file.arrayBuffer()
const geojson = await shp(data);

3. You can pass in an object with shp, dbf, prj, and cpg properties.

const object = {}
object.shp = await fs.readFile('./path/to/file.shp');
// dbf is optional, but needed if you want attributes
object.dbf = await fs.readFile('./path/to/file.dbf');
// prj is optional, but needed if your file is in some projection you don't want it in
object.prj = await fs.readFile('./path/to/file.prj');
// cpg is optional but needed if your dbf is in some weird (non utf8) encoding.
object.cpg = await fs.readFile('./path/to/file.cpg');

const geojson = await shp(object)

on zipfiles

If there is only one shp in the zipefile it returns geojson, if there are multiple then it will be an array. All of the geojson objects have an extra key fileName the value of which is the name of the shapefile minus the extension (I.E. the part of the name that's the same for all of them).