aqui.ioA coordinate shortening service

Clodoveu DavisDepartamento de Ciência da Computação

Universidade Federal de Minas Gerais

http://aqui.io/hvVzTaRuXNG

Example: lat/lon, WGS84, 10m precision = 4 decimal places

WGS8410mHemisphere (N/S, E/W)

-22.7146 -45.5934

pB0_HU6u

227146 455934

001111 011011 110100 111111 100001 101110 111010 010100

aqui.io/

11

Features

• NOT hashing• Does not require permanent storage of

requested codes• Small code that can be implemented in many

languages and embedded in Web and mobile apps

• No Internet connection necessary to encode• Precision selected according to the application

Modes

• SYS– Lat/lon WGS84– Lat/lon any SRID– UTM

• PRECISION– 1cm (7 decimal places)– 10cm (6 decimal places)– 1m (5 decimal places)– 10m (4 decimal places)

Code length

Mode /Precision WGS84 LatLon

any SRID UTM

1cm - - 14

10cm (6 places) 11 13 13

1m (5 places) 10 12 11

10m (4 places) 8 11 10

Use case 1

-22.7146 -45.5934

aqui.io/pB0_HU6u

OR

Use case 2

-22.7146 -45.5934

aqui.io/pB0_HU6u

AND

<a href=http://aqui.io/pB0_HU6u>Orotour Garden Hotel </a>

Use case 3aqui.io/pB0_HU6u

BrasilSão Paulo

Vale do ParaíbaCampos do Jordão

Orotour Garden Hotel

Online GazetteerLinked data

Use case 4

aqui.io/pB05bVb6

Campos do Jordão

Online GazetteerLinked data

Use case 5

@TransitoBH Congestionamento no Anel Rodoviário aqui.io/lqXaxdYOTG

Use case 6

• VGI integration

@VGI Public money wasted here! aqui.io/lqXaxdYOTG

Ongoing and future work

• Engineering– Design of tools, interfaces, libraries– Integration within mobile apps– Production site and services

• Research– Collecting and analyzing usage

• Expansion– Reverse geocoding integration– Place name mode (gazetteer)

aqui.ioA coordinate shortening service

clodoveu@dcc.ufmg.br