View source for Using Leaflet to design a Disc Golf Course

{{Messagebox|text=This is an example of how to create maps in this wiki|type=success}}
[[File:Partridge Brook Park Disc Golf Course 18-hole layout.png|alt=18-hole disc golf course - green beginner course|thumb|Partridge Brook Park Disc Golf Course (PBPDGC) possible layout]]
Using the [[Maps]] Extension (and with some help from '''[https://geojson.io GeoJson.io]''' to quickly come up with the JSON) you can design a 'back of the napkin' sketch of a Disc Golf Course very easily compared to some of the other mapping tools. This is what I did for [[Partridge Brook Park Disc Golf Course]] By visiting https://geojson.io/#map=17.15/42.855467/-70.863373 you can draw in your browser with a satellite imagery basemap to generate the JSON that you would copy into this site.

Example:
Using the '''#display_map''' parser function <code><nowiki>{{#display_map: center="-70.864801793366439,42.854582093535043" | geojson=PartridgeBrookParkDG | scrollwheelzoom=off | service=leaflet }}</nowiki></code> displays the '''data''' which is stored in [[GeoJson:PartridgeBrookParkDG]]. If you have edit rights in this wiki, you can edit both this page, and the underlying map data. Note: The alternate '''display_map''' tag syntax does not appear to be compatible with GeoJSON data e.g. this won't work: <code><nowiki><display_map center="-70.864801793366439,42.854582093535043" geojson="PartridgeBrookParkDG" height="450px" scrollwheelzoom="off" service="leaflet"></display_map></nowiki></code> (The tag syntax is ideal for showing multiple markers, each on their own line.)

{{#display_map: center="-70.864801793366439,42.854582093535043" | geojson=PartridgeBrookParkDG | scrollwheelzoom=off | service=leaflet }}

The process is a quick 3-step process to make personalized maps:

# Draft the map at geojson.io (because it's quick, has a good UI, supports multiple shapes and generates the JSON data).
# Copy/paste the JSON data into the GeoJson namespace on this site to "save" it for use or refinement.
# Use "#display_map" on any page on this site to embed/display the saved map data. 
# You can edit or revise the map data from either the display page, or the underlying data page. And, it's simple to copy/paste the JSON back and forth between here and GeoJSON.io too if you want to use that edit interface.

== See Also == 
[[Using OpenStreetMaps to design a Disc Golf Course]]

== Circles ==
While Leaflet does allow to draw circles with a point and a radius. The circles that you draw in GeoJson.io are not true circles. Instead they are polygons made up of dozens of points on an arc that approximate a circle. So, your data gets bulky and hard to edit.

{{References}}

[[Category:Disc Golf]]
[[Category:Maps]]