npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

concavehull

v0.1.6

Published

Workable refactoring into a module of a concave hull algorithm.

Downloads

2,327

Readme

ConcaveHull

Travis   npm   License MIT


Based on the StackOverflow question about the CSharp implementation of a paper written by Adriano Moreira and Maribel Yasmina Santos from the University of Minho.

Initially a prototype was created by nredko – and this implementation is a refactor to transform it into a fully working module.

Getting Started

Using ConcaveHull is terribly simple – all you have to do is pass an array of objects that conform to the { lat: {Number}, lng: {Number} } format – in the case of Leaflet.js this is just an array of L.LatLng objects.

Once you have your array of latitudinal and longitudinal values, you can instantiate the object, and then invoke the getLatLngs method:

var latLngs = new ConcaveHull(latLngs).getLatLngs();

You can manually specify the maximum length of edges in metres by passing it into the constructor as the second argument:

var edgeLength = 35,
    latLngs    = new ConcaveHull(latLngs, edgeLength).getLatLngs();