https://github.com/riatelab/geotoolbox

geojson toolbox
https://github.com/riatelab/geotoolbox

Last synced: about 1 month ago
JSON representation

geojson toolbox

• Host: GitHub
• URL: https://github.com/riatelab/geotoolbox
• Owner: riatelab
• License: mit
• Created: 2022-05-20T11:17:37.000Z (about 3 years ago)
• Default Branch: main
• Last Pushed: 2025-04-11T09:39:18.000Z (about 1 month ago)
• Last Synced: 2025-04-19T09:45:18.957Z (about 1 month ago)
• Language: JavaScript
• Homepage: https://riatelab.github.io/geotoolbox
• Size: 2.77 MB
• Stars: 65
• Watchers: 5
• Forks: 11
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-frontend-gis - geotoolbox - Provides several GIS operations for use with geojson properties. Useful for thematic cartography. (👨‍💻 JavaScript Libraries / Data Processing)

README

        
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# `geotoolbox@3`

**`geotoolbox`** is a javascript tool for geographers. It allows one to manage GeoJSON properties (attribute data) and provides several useful **GIS operations** for thematic cartography. The aim of geotoolbox is to offer functions designed to handle geoJSON directly, not just single features or geometries. As a result, the library is particularly **user-friendly** for users with little experience of javascript development. From a technical point of view, geotoolbox is largely based on **geos-wasm** GIS operators (a big thanks to Christoph Pahmeyer 🙏), but also on d3.geo and topojson. Geotoolbox also works well with other cartographic libraries such as `geoviz` and `bertin.js`. Note that there are other GIS libraries like `turf.js`, which is really great. 

![logo](img/geotoolbox.svg)

### ➡️ Installation

- CDN

``` html

```

- npm

```

npm install geotoolbox@3

```

- Observable notebooks

``` js

geo = require("geotoolbox@3");

```

### ➡️ Usage

Most functions take the same type of argument as input - a dataset and options - like `geotoolbox.myfunction(data, {options})`. Please note that functions based on geos-wasm are asynchronous.

- A buffer example

``` js

const mybyffer = await geotoolbox.buffer(data, {dist: 1000});

```

- Data handling example (add a field in a geoJSON)

``` js

geotoolbox.derive(data, {

  field: "gdppc", // the name of the new field

  value: "gdp/pop*1000", // a function to calculate the value

  mutate: true // to update the dataset

});

```

- Tests if two geometries intersect

``` js

geotoolbox.intersects(data1, data2);

```

### ➡️ How it works?

See documentation api: https://riatelab.github.io/geotoolbox