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Convert GeoJSON into Shapefile in pure JavaScript

License: MIT License

JavaScript 100.00%

shapefile geojson gis converter

geojson2shp's Introduction

geojson2shp

Convert GeoJSON into Shapefile in pure JavaScript

Prerequisites

Node.js 12+

Usage (CLI)

With global installation

# Installation
npm install geojson2shp -g

# Conversion
cat my.geojson | geojson2shp > my-shp.zip

With npx (included in Node.js installation)

# Conversion
cat my.geojson | npx geojson2shp > my-shp.zip

Usage (Node.js)

Basic

const {convert} = require('geojson2shp')

const options = {
  layer: 'my-layer',
  targetCrs: 2154
}

// Paths
await convert('/path/to/source.geojson', '/path/to/dest-shp.zip', options)

// Streams
await convert(inputGeoJSONStream, outputZippedShapefileStream, options)

// FeatureCollection as input
const featureCollection = {type: 'FeatureCollection', features: [/* */]}
await convert(featureCollection, '/path/to/dest-shp.zip', options)

// Features as input
const features = [
  {type: 'Feature', geometry: {/* */}, properties: {}},
  {type: 'Feature', geometry: {/* */}, properties: {}}
]
await convert(features, '/path/to/dest-shp.zip', options)

// Or mix them ;)

Custom stream

const fs = require('fs')
const {createConvertStream} = require('geojson2shp')


myGeoJSONStream
  .pipe(createConvertStream({
    targetCrs: 2154,
    layer: 'my-layer'
  }))
  .pipe(fs.writeWriteStream('/path/to/my-shapefile.zip'))

License

MIT

geojson2shp's People

Contributors

Stargazers

Forkers

thom4parisot chpicone sypcloud timedata datayama38 natural-apptitude yizhakbn rackar ljq2731 shivneel7 qq472017713 elbirador zanemeroff gleandev vichai-glean thomasg77

geojson2shp's Issues

How to use it in browser?

I need convert geojson to shapefile in browser, without node.js.
How?

Forward feature ID as Shapefile Feature ID?

I'm trying to maintain a feature ID from a dataset to another one, so I use the id GeoJSON attribute.

{
  "type": "Feature",
  "id": 21420
  "properties": {}
  "geometry": {}
}

I get it with the feature.fid gdal-next attribute:

while (feature = layer.features.next()) {
    const id = feature.fid
    // ...
}

But unfortunately, the feature ID advertised in the shapefile is a different one.

Is there a mechanic to use to forward this identifier?
See the various feature id in QGIS panel.

I'm willing to use this to overlay 2 layers, and to remove features of layer B from the layer A.

the length of field header is truncated into 10

how can i modify the max length of the header ,such as 20.
https://github.com/jdesboeufs/geojson2shp/blob/master/lib/shp-write-stream/dbf.js#L180

how to escape zipping when saving shp file?

Hello, great lib, thank you.

Can I just save the *.shp, *.prj... files to a folder instead of zipping?

I saw

const zipFile = new ZipFile();
 const zipStream = zipFile.outputStream

in "lib/stream.js",

I want to add some lines like if(zip =false) fs.write(*.shp)

I am very confuse by the pipe line and stream, can not do it rightly.

Provide layer name and/or CSR as CLI arguments

Maybe like?

cat blah.geojson | npx geojson2shp --layer-name test --target-csr 2154 > blah.shp.zip

geojson2shp completely browser-based

Can I use this library as a completely browser based script, without needing NodeJS?
Maybe browserify can help?

I am using the shpwrite.download(geojsonData) and shpwrite.zip(geojsonData, options) functions, but my web application cannot read the resulting a shapefile.

Variable Title

Bonjour :) Premièrement merci de mettre à disposition cet outil 👍 il marche parfaitement j'ai seulement une question à propos de son fonctionnement:

Le fichier généré présente les informations de la manière suivante:

layer
---Title
-----geojson property 1
-----geojson property 2

Est-il possible de changer la valeur "Title" pour mettre "id" à la place par example ?

Merci d'avance !

Null column doesn't get exported

If all the values in a column are null, that column doesn't get exported in shapefile.

Feature: add encoding type option to convert method

Right now the .dbf writer accepts encoding in ctor but there is no way to pass the encoding type to him which limits the datasets you can work with.
As well it could be cool if there would be an option to create .cpg file which specify the same encoding type so it can be used with other languages.

When I import generated shape file into AutoCad, am not able to see the features in AutoCad map

Am able to generate the Shape file successfully with the geojson2shp plugin.

And able to import into Google Earth and am able to see the features on map.

But when I tried imported to AutoCad, it is importing the data but can't see the features, tried changing the layer settings, but nothing worked.

Please help me to resolve this...

Bugged conversion

Using this library generate a shp file, but don't represent the original file.

What I'm doing:

const {convert} = require('geojson2shp')

const options = {
  layer: 'my-layer',
  targetCrs: 31982
}

async function converter() {
	await convert('./agricultura.geojson', './dest-shp.zip', options)
}
converter();

The original file:

The generated one:

If I'm missing something, please let me know.