https://github.com/rowanwins/arcgis-pbf-parser

A library for converting an arcgis-pbf into a geojson FeatureCollection.
https://github.com/rowanwins/arcgis-pbf-parser

arcgis esri pbf

Last synced: 11 days ago
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A library for converting an arcgis-pbf into a geojson FeatureCollection.

• Host: GitHub
• URL: https://github.com/rowanwins/arcgis-pbf-parser
• Owner: rowanwins
• License: apache-2.0
• Created: 2021-06-16T03:10:53.000Z (over 3 years ago)
• Default Branch: master
• Last Pushed: 2023-04-14T04:47:24.000Z (over 1 year ago)
• Last Synced: 2024-10-22T08:53:12.465Z (17 days ago)
• Topics: arcgis, esri, pbf
• Language: JavaScript
• Homepage:
• Size: 336 KB
• Stars: 22
• Watchers: 5
• Forks: 3
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGES.md
  • License: LICENSE

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README

        
# arcgis-pbf-parser

A library for converting an [arcgis-pbf](https://github.com/Esri/arcgis-pbf) into a geojson `FeatureCollection`.

By itself it doesn't do much but you can find a more complex example of it's usage is in my [mapbox-gl-arcgis-featureserver](https://github.com/rowanwins/mapbox-gl-arcgis-featureserver) library.

[![Test Status](https://github.com/rowanwins/arcgis-pbf-parser/workflows/Tests/badge.svg?branch=master)](https://github.com/rowanwins/arcgis-pbf-parser/actions)

[![minzipped size](https://badgen.net/bundlephobia/minzip/arcgis-pbf-parser)](https://esm.run/arcgis-pbf-parser)

## Basic Usage

````

const arcgisPbfDecode = require('arcgis-pbf-parser')

// or in ES6

import arcgisPbfDecode from' arcgis-pbf-parser'

fetch('Some/FeatureServer/0/query?f=pbf&...')

  .then(response => response.arrayBuffer())

  .then(data => {

    const featureCollection = arcgisPbfDecode(new Uint8Array(data)).featureCollection

   })

````

The decode method returns an object containing the `featureCollection` object, and a boolean specifying if there were too many features and so you need to paginate for more features with the same request.

````

{

  featureCollection: {

    ...

  },

  exceededTransferLimit: true/false

}

````

## Status

This was cobbled together fairly quickly based on the [minimal documentation](https://github.com/Esri/arcgis-pbf/tree/main/proto/FeatureCollection) available.

### Done

- Polgon

  - Inc MultiPolygon

  - Inc Polygon with holes

- LineString

  - Inc MultiLineString

- Point

- Attributes

- Features with null geometries

### To Do

- MultiPoint (a sample service would be helpful)

- Improve tests

## Acknowledgements

- I used the proto spec file supplied by [Esri here](https://github.com/Esri/arcgis-pbf/blob/main/proto/FeatureCollection/FeatureCollection.proto)

- I used the mapbox `pbf` [library](https://github.com/mapbox/pbf) to compile the `src/parser/PbfFeatureCollection.js` module for parsing rather than the [one supplied](https://github.com/Esri/arcgis-pbf/blob/main/proto/FeatureCollection/parsers/js/FeatureCollection.js) by Esri 

  - This results in a slimmer & faster package and the `pbf` dependency will be shared/tree-shaken with mapbox-gl.