Drop Zone is a solution to the problem of restricted sales in censored markets. The proposal is for the design of a protocol and reference client that encodes the location and a brief description of a good onto The Blockchain. Those wishing to purchase the good can search for items within a user-requested radius. Sellers list a good as available within a geographic region, subject to some degree of precision, for the purpose of obfuscating their precise location. Goods are announced next to an expiration, a hashtag, and if space permits, a description. Once a buyer finds a good in a defined relative proximity, a secure communication channel is opened between the parties on the Bitcoin test network ("testnet"). Once negotiations are complete, the buyer sends payment to the seller via the address listed on the Bitcoin mainnet. This spend action establishes reputation for the buyer, and potentially for the seller. Once paid, the seller is to furnish the exact GPS coordinates of the good to the buyer (alongside a small note such as "Check in the crevice of the tree"). When the buyer successfully picks up the item at the specified location, the buyer then issues a receipt with a note by spending flake to the address of the original post. In this way, sellers receive a reputation score. The solution is akin to that of Craigslist.org or Uber, but is distributed and as such provides nearly risk-free terms to contraband sellers, and drastically reduced risk to contraband buyers.

Generate KML polygons (circle, star etc.) from lat/long and radius A port of http://blog.client9.com/2007/09/drawing-circles-and-stars-on-google.html

a gem to convert point_radius geolocations to bounding boxes and split them into smaller boxes

Generates geographic coordinates randomly chosen near by the location and within the radius specified. It aims to provide a way to generate dummy data for geographical apps. NOTE that all results are approximate values since problems derived from the shape of the earth have not been taken into consideration.

It get places with query string , location and radius.

Rubius provides a simple interface to RADIUS authentication

Adds two Radius tags that help you in responding to params.

Allows you to use page radius tags in stylesheets and javascripts from the SNS extension.

Lightweight CMS based on Sinatra framework, where data are stored in file system (and so may be Git-powered) and enhanced using Radius gem.

Ruby Client for zipcodeservices.com. Gives ip address and radius queries. Visit zipcodeservices.com for more details

Provides a few Radius Tags to access data from the EventBrite API

Lulu merges the closest overlapping pair of map markers into a one whose area is the sum of the original two, located at their centroid. It repeats this until no overlaps remain. Some interesting data structures make this quite fast for all but pathologically bad data. Markers can be circles or squares. The user may provide a scale factor allowing the marker radius to have a different scale than distance between markers.

This library uses a GeoJolt.com API key to return all zip codes with a radius of the zip code passed to it.

Makes Radiant better by adding if_date radius tags

Flexible, extensible custom tag and template framework with safe execution and HTML-like style. Wraps a cleaner API around the Radius templating framework.

ruby template engine based on radius and liquid

Calculate arc length for a given radius and arc measure

Library of tools for gps coordinates. Useful for quickly calculating distances, calculating if location is within specified polygon or radius, etc.

A fully responsive masonry-style portfolio template.

Calculates geohashes within a radius from a point