proj4 : Proj4js is a JavaScript library to transform point coordinates from one coordinate system to another, including datum transformations.. You can installing proj4 npm packages, there are two ways to install this module locally and globaly. -g option is specified to global. Execute the below command.
$ sudo npm install proj4 $ sudo npm install -g proj4
If want to update the proj4 package execute the command as below,
$ sudo npm update proj4
Update package globally,
$ npm install -g proj4
$ sudo git clone https://github.com/rektide/proj4.git
$ sudo npm install -g ./proj4
proj4@2.4.4 /usr/lib/node_modules/proj4
You can uninstall or remove this package from your node_modules run the command as below,
$ sudo npm uninstall proj4
| Package Name | proj4 |
| Version | 2.4.4 |
| Description | Proj4js is a JavaScript library to transform point coordinates from one coordinate system to another, including datum transformations. |
| Released Date | 2017-08-11T02:22:19.123Z |
| Published by | ahocevar |
| How to Learn | https://www.npmjs.com/package/proj4/tutorial |