Comprehensive data proxy to knowledge about real world
Ruby
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README.md

Reality

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Reality is experimental Ruby library/set of libraries to provide uniform query access to heterogenous web API, with accent on real-world knowledge ones. It emphasizes simplicity of data access and interoperability of data from various sources.

The ultimate goal is to make the world inspectable and computable.

Some demos:

require 'reality' # the core library
require 'reality/miracles' # some demo-friendly shortcuts

# wikipedia

# single entry
cm = Reality.wikipedia.get('Chiang Mai')
# => #<Reality::Entity wikipedia:en://Chiang Mai>

cm.describe
# => #<Reality::Entity wikipedia:en://Chiang Mai>
#                   meta.title: Chiang Mai
#                     meta.url: https://en.wikipedia.org/wiki/Chiang_Mai
#                   meta.image: https://upload.wikimedia.org/wikipedia/commons/7/76/Chiang_Mai_City.png
# ....
#                  native_name: เชียงใหม่
# ....
#             subdivision_type: Country
#             subdivision_name: <wikipedia:en://Thailand>
#            subdivision_type1: <wikipedia:en://Provinces of Thailand (Province)>
#            subdivision_name1: <wikipedia:en://Chiang Mai Province>
#            subdivision_type2: <wikipedia:en://Amphoe>
#            subdivision_name2: <wikipedia:en://Mueang Chiang Mai District (Mueang Chiang Mai)>
#                 leader_title: Mayor
#                  leader_name: Tatsanai Puranupakorn
#               area_total_km2: 40.22km²
#               area_metro_km2: 2,905km²
#             population_as_of: 2017
#             population_total: 131,091people
# ....
#                   utc_offset: +07:00
#                  coordinates: 18°47'43"N 98°59'55"E
# .....

# navigation through data
cm.subdivision_name.describe
# => #<Reality::Entity wikipedia:en://Thailand>
#               meta.title: Thailand
#                 meta.url: https://en.wikipedia.org/wiki/Thailand
#               meta.image: https://upload.wikimedia.org/wikipedia/commons/a/a9/Flag_of_Thailand.svg
#              native_name: {native name:th|ราชอาณาจักรไทย}, {lang:th-Latn|Ratcha-anachak Thai}
#               image_flag: <wikipedia:en://File:Flag of Thailand.svg>
#               image_coat: <wikipedia:en://File:Garuda Emblem of Thailand.svg>
#          national_anthem: <wikipedia:en://Thai National Anthem (Phleng Chat Thai)>, ({lang-en:"Thai National Anthem"}),
#             royal_anthem: <wikipedia:en://Sansoen Phra Barami>, ({lang-en:"Glorify His prestige"}),
#                image_map: <wikipedia:en://File:Location Thailand ASEAN.svg>
# ....
#                  capital: <wikipedia:en://Bangkok>
#              coordinates: 13°45'0"N 100°29'0"E
# ....

# lists of entities
cities = Reality.wikipedia.query(category: 'Cities and towns in Thailand').all
# => [#<Reality::Link wikipedia:en://Amnat Charoen>, #<Reality::Link wikipedia:en://Bueng Kan>, #<Reality::Link wikipedia:en://Buriram>, #<Reality::Link wikipedia:en://Cha-am District>, #<Reality::Link wikipedia:en://Chai Nat>, #<Reality::Link wikipedia:en://Chai Prakan>, #<Reality::Link wikipedia:en://Chaiyaphum>, #<Reality::Link wikipedia:en://Chiang Dao Subdistrict>, #<Reality::Link wikipedia:en://Chiang Mai>, ...
cities.first.population_total
# => #<Reality::Measure 26,118 people>

# Wikidata (structured Wikipedia-alike data storage)
cm2 = Reality.wikidata.query(label: 'Chiang Mai').first
# => #<Reality::Link wikidata://Q52028 (Chiang Mai)>
cm2.describe
# => #<Reality::Entity wikidata://Q52028>
#                                  meta.id: Q52028
#                               meta.label: Chiang Mai
#                         meta.description: city in Chiang Mai province, Thailand
#  ...
#                              instance of: <wikidata://Q15141632 (Thesaban Nakhon)>, <wikidata://Q1549591 (big city)>
#  ...
#                              sister city: <wikidata://Q819613 (Uozu)>, <wikidata://Q128186 (Saitama Prefecture)>, <wikidata://Q182852 (Kunming)>, <wikidata://Q42956 (Harbin)>
#                              GeoNames ID: 1153671
#            category for people born here: <wikidata://Q8078994>
# category for films shot at this location: <wikidata://Q7140299 (Category:Films shot in Chiang Mai)>
#        category for people who died here: <wikidata://Q27062063>
#        Encyclopædia Britannica Online ID: place/Chiang-Mai
# ...

# Interaction Wikipedia→Wikidata:
cm = Reality.wikipedia.get('Chiang Mai')
cm['meta.wikidata'].load.describe
# => #<Reality::Entity wikidata://Q52028>
#    meta.id: Q52028
# meta.title: Q52028
# meta.label: Chiang Mai
# ...

# Wikipedia→OpenStreetMap
Reality.osm.query(around: cm, radius: 30_000, aerodrome: 'international').all
# => [#<Reality::Link osm://way(90429204) (Chiang Mai International Airport)>]

# Wikipedia→OpenWeatherMap
Reality.open_weather_map.query(at: cm).first.describe
# => #<Reality::Entity openweathermap://1153671>
#       temp: 33°C
#   pressure: 1,007hPa
#   humidity: 55%
#   temp_min: 33°C
#   temp_max: 33°C
# visibility: 10000
# wind_speed: 4.6m/s
#   wind_deg: 160°
# clouds_all: 40
#  timestamp: 2018-05-27 13:00:00 +0300
#    country: TH
#    sunrise: 2018-05-27 01:46:48 +0300
#     sunset: 2018-05-27 14:55:42 +0300
#       name: Chiang Mai
#      coord: 18°48'0"N 99°0'0"E

!!!IMPORTANT!!! This is pre-release of new, completely rewritten version. Previos version turned to be a (nice-looking) dead end. It still can be found at old-prototype branch, and installed as a gem version 0.0.5.

Current state is very WIP subject to lot of changes

See also the explanatory presentation and video, made at RubyConfIndia 2018.

Stay tuned for large and important updates!

Credits

Development of first version was sponsored by 2015 Ruby Association Grant.

Initial idea is inspired by "integrated data" of Wolfram Language.

License

MIT