HEALPix porting to Javascript

Porting of HEALPix C++ library to Vanilla Javascript. It only supports NEST pixelation of the sky.

Licensing

healpixjs is distributed under a dual-license model:

• a commercial license for proprietary or revenue-generating use
• a separate non-commercial, source-available license for personal, academic, research, evaluation, or other non-commercial use

The non-commercial option is not an OSI open source license. See LICENSE.md, LICENSE-COMMERCIAL.md, and LICENSE-NONCOMMERCIAL.md.

How to use the generated library available in Nodejs repository

Include the following dependency into package.json file in your project:

"dependencies": {
        "healpixjs": "^1.0.3",
    },

Start using HEALPixjs in your project

import { Healpix } from "healpixjs"
import { Pointing } from "healpixjs"
import { Vec3 } from "healpixjs"

const nside = 8
const hpx = new Healpix(nside)

const thetaRadians = 0.73304
const phiRadians = 1.43117
const ptg = new Pointing(null, false, thetaRadians, phiRadians)
const pixelTileNumber = hpx.ang2pix(ptg)
const vec3 = hpx.pix2vec(pixelTileNumber)

Instalation

• Prerequisites: Node.js v<=16 (see installation instructions)

• Clone repo:

git clone https://github.com/fab77/healpixjs.git

• Move to the healpixjs folder:

cd healpixjs

• Install the required dev modules:

npm i

• Compile the project:

npm run build:prod

Built With

Node: v16.17.0 webpack: 5.74.0

Contributing

Versioning

Authors

• Fabrizio Giordano

Acknowledgments

• Yago Ascasibar