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Pokemon Go EX-raid Map for Singapore

Originally this project started out as a simple map to identify gyms in park. Over time it grew to be a useful collection of data points as well as for analysis. Therefore I am adapting this into a more general purpose mapping site that can be easily extended to other areas.

Installation Requirements

  • A static site host (like Github Pages)
  • A tile server (This site makes use of the OSM's generously provided servers)
  • A data source in the same format as all.geojson hosted somewhere (I use Github Gists and Rawgit)

Data sources

The data sources are in the geoJSON format as it allows for:

  • easy parsing by javascript
  • being human-readable (in the case of manually updating EX-raids)
  • easily extensible (The properties key)

Gym list

The rationale behind this data format is to front-load expensive geographical calculations beforehand, so that the map, its markers and overlays can be (re-)rendered and filtered as quickly as possible for a seamless user experience.

S2 Grid

Plotting an S2 grid is quite straightforward thanks to this widespread tool. Using it programmatically however, is what I'm going to cover.

Building from source

There is not much to change. There are chiefly 3 files of concern:

  • index.html
    • Change the title tag
    • I use Sentry/Raven for error-reporting. You can reconfigure it or just remove it.
    • I use google analytics to monitor my site load. Again, reconfigure or remove.
    • What follows is a bunch of libraries that simply make the site a bit nicer and easier to code in.
    • The HTML and CSS are barebones as it is. Again, you can customize as you see fit.
  • index.js
    • Although I cram everything into one file, it is not a lot of code. It is mostly filters and plugging in Leaflet libraries.
    • What is important is to change the 2 calls of fetchLocal to use your own data sources for all.geojson and s2.geojson respectively. I used the function back when I was doing fine without jQuery. Now you can just replace with it $.get I guess. I don't use fetch as I prefer not to have to polyfill it for older browsers.
    • You can also change the tile servers used here. If you host your own one, It should be fast and speedier to load for local users.
  • compiled.js
    • This is the babelified version of index.js, for browser compatibility.
    • First run yarn to install required packages (also for linting and code formatting)
    • Run yarn build, which also starts in watch mode and changes compiled.js as you edit index.js.

Please add an attribution link back to this repository if you are copying my site code, so people can contact me about my code if needed.

  • Example attribution:
    • <a href="">Original source</a>
  • Ideally it should be displayed at the bottom along with the attribution to Leaflet and OSM.

Local development

Simply load index.html in your browser. A file:/// URL works fine as long you are hosting the data sources elsewhere, otherwise Chrome doesn't allow network calls for the file:/// scheme.