GIS operation using TURF

Installation

If you have node installed, you also have a command called npm installed: this is what you use to download extra software for node. This project has some preset requirements, which are stored in package.json, so if you open a terminal in the same folder as this project and run the command

$ npm install

Then the npm command with automatically find, download, and install turf to this directory.

Next, you should open index.js, either locally or on GitHub, read through the code comments to understand what it does.

Change the location of the sync folder in the index file. Place all the geojson files inside the sync folder. When you feel comfortable with your understanding of the process, run it:

$ node index.js

This tells node to run the code in index.js. That should quickly report:

$ node index.js
{"type":"Feature","geometry":{"type":"Polygon","coordinates":[[[-82.574787,35.594087],[-82.574787,35.615581],[-82.545261,35.615581],[-82.545261,35.602602],[-82.52964,35.602602],[-82.52964,35.585153],[-82.560024,35.585153],[-82.560024,35.594087],[-82.574787,35.594087]]]},"properties":{"fill":"#0f0"}}
Comparing  1.geojson and 5.geojson
Similarity Percent:19.809459799644888%

Only the union and intersection percentage calculation is done as of now.