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https://github.com/bertrandkeller/jekyll-geocode

Geo-encode addresses from a YAML for drawing maps with Jekyll
https://github.com/bertrandkeller/jekyll-geocode

jekyll jekyll-plugin

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Geo-encode addresses from a YAML for drawing maps with Jekyll

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README 

        
# Jekyll Geocode



Making a interactive maps with adresses is impossible you need the coordinates.  

Making a file writing by redactors with directly the coordinates of your data is impossible or too slow.



So you need a processus for generating coordinates form addresses by calling a service. 



For speed reasons you‘d rather writing the coordinates in files during the build. You will probably generate a JSON file with coordinates in your HTML page displaying map.



I took the [Nominatim](https://nominatim.openstreetmap.org/) open source service from Open Street Map for calling the data. 



## Example of YAML : _data/members.yml



```yaml

- name: "Bertrand Keller"

  street: "place du vieux marché"

  postcode: "76000"

  city: "Rouen"

  region: "normandy"

  country: "france" 

- name: "John Doe"

  street: "rue Mendès France"

  postcode: "76190"

  city: "Yvetot" 

  region: "normandy"

  country: "france"  

- name: "Samuel Le Bihan"

  street: "Place Niemeyer" 

  city: "Le Havre"

  postcode: "76600"

  region: "normandy"

  country: "france"

```



> For key matching, avoid accent in name or create a key in members.yml (ex: geoname) without space and accent.



## Example of configuration _config.yml



```yaml

jekyll_geocode:

  file-name: members.yml # Name of the YML store inside _data with a list of datas (required)

  file-path: _data # Path of the YML file, folder of your data (_data) by default (optional)

  name: name # Name of the field from the YML that will gave the name of the generated file (the name will be downcase and space replace by a dash) (required)

  address: address # Name of the address (street + city) or only street field (if city field exists) from the YML (required)

  postcode: postcode # Postcode from the YML (optional)

  city: city # Name of the town field from the YML, if you have a separated field address and city (optional)

  region: region # Name of the region, county or state or all in the same field from the YML (optional)

  country: country # Name of the country from the YML (optional)

  cache: true # Test if a file already exist

  outputfile: place.yml # Give the name of the file for an yml output (otherwise it will be JSON) <= usefull for jekyll-map

```

> The service is very slow (when you have lot of entries) but you can generate files with the cache option. Be carefull, ignore this files in your git tracking files !



## Example of loop with JSON : map.html with google map



```liquid

{% for row in site.data.members | sort: 'name' %}

    {% assign geoname = row.name | replace: ' ', '-' | downcase %}

    var point = new google.maps.LatLng({% for coordinates in site.data.[geoname] %}{{ coordinates.lat }}, {{ coordinates.lon }}{% endfor %});

{% endfor %}

```



## Example of loop with YAML : map.html with google map

```liquid

{% for row in site.data.members | sort: 'name' %} 

    {% assign geoname = row.name | replace: ' ', '-' | downcase %}    

    {% assign places = site.data.place | where:"title", geoname %} 

    {% for coordinates in places %}

      var point = new google.maps.LatLng({{ coordinates.location.latitude }}, {{ coordinates.location.longitude }});

    {% endfor %}

{% endfor %}

```



This plugin is used in a production website and working well. You are invited for improvement proposals.