Call Real Time APIs from Data Gov Singapore.
datagovsgR
datagovsgR is a R package used to access data-frames returned by Developer API Tools from Data.gov.sg. The package calls upon the real-time APIs, to obtain information such as taxi availability, real time weather readings, weather forecasts and PSI readings.
Installation
You can install the latest version of datagovsgR though CRAN.
install.packages("datagovsgR")
Alternatively, you can install the developmental version of datagovsgR through install_github in R.
install.packages("devtools")
devtools::install_github("clintonwxy/datagovsgR")
Using datagovsgR
The API provided by data.gov.sg does not require an API key and hence the package is able to query the relevant information directly. Below are two examples of the functions within the package
PSI
The psi function is shown below, which returns 12 different psi measures across 5 sectors in Singapore for a given date and time. The user is able query a specific date and time, or for current available information by ommiting the parameter.
psi(date_time = "2019-11-08T17:30:02")
#> Closest timestamp: 2019-11-08T17:00:00+08:00
#> psi_measures west national east central south north
#> 1 o3_sub_index 12.00 20.00 13.00 20.00 13.00 17.00
#> 2 pm10_twenty_four_hourly 33.00 39.00 35.00 29.00 39.00 30.00
#> 3 pm10_sub_index 33.00 39.00 35.00 29.00 39.00 30.00
#> 4 co_sub_index 4.00 9.00 9.00 2.00 4.00 5.00
#> 5 pm25_twenty_four_hourly 21.00 22.00 21.00 18.00 22.00 19.00
#> 6 so2_sub_index 8.00 8.00 3.00 3.00 8.00 5.00
#> 7 co_eight_hour_max 0.43 0.95 0.95 0.24 0.39 0.52
#> 8 no2_one_hour_max 12.00 33.00 27.00 14.00 33.00 20.00
#> 9 so2_twenty_four_hourly 13.00 13.00 5.00 4.00 13.00 8.00
#> 10 pm25_sub_index 61.00 63.00 61.00 57.00 63.00 59.00
#> 11 psi_twenty_four_hourly 61.00 63.00 61.00 57.00 63.00 59.00
#> 12 o3_eight_hour_max 27.00 48.00 32.00 48.00 30.00 41.00
Taxi Availability
The taxi_availability function returns the total number of available taxis for a given date and time, and their locations in latitude and longitude. Similarly, ommitting the date_time parameter returns the latest available information.
taxi_availability(date_time = "2019-08-07T09:30:00") %>%
head()
#> Timestamp: 2019-08-07T09:29:55+08:00
#> Availible Taxis: 4586
#> long lat
#> 1 103.6142 1.25267
#> 2 103.6235 1.28648
#> 3 103.6236 1.30047
#> 4 103.6238 1.28678
#> 5 103.6275 1.31123
#> 6 103.6282 1.31332
Coverage
| APIs | Availability | Description/Remarks |
|---|---|---|
| Pollutant Standards Index (PSI) | :heavy_check_mark: | National Environment Agency / Overall and regional PSI data (24-hr PSI, Pollutant Concentration and Sub-Index) |
| Carpark Availability | :heavy_check_mark: | GovTech / Get the latest carpark availability in Singapore: - Retrieved every minute - Use the date_time parameter to retrieve the latest carpark availability at that moment in time - Detailed carpark information can be found at https://data.gov.sg/dataset/hdb-carpark-information - Limited to 60 requests per minute per API key |
| Realtime Weather Readings across Singapore | :heavy_check_mark: | National Environment Agency / NEA provides APIs for readings of temperature, humidity, precipitation and wind conditions at up to one-minute intervals. The data is provided at weather-station level. |
| Ultra-violet Index (UVI) | :heavy_check_mark: | National Environment Agency / UV Index value averaged over the past hour. Updated every hour between 7 AM and 7 PM everyday. |
| Traffic Images | :heavy_check_mark: | Land Transport Authority / Returns links to images of live traffic conditions along expressways and Woodlands & Tuas Checkpoints. |
| Taxi Availability | :heavy_check_mark: | Land Transport Authority / For access to real-time taxi availability data. Returns location coordinates of all Taxis that are currently available for hire. Does not include "Hired" or "Busy" Taxis. |
| PM2.5 | :heavy_check_mark: | National Environment Agency / Regional hourly PM2.5 value measured in μg/m3 |
| Weather Forecast | :heavy_check_mark: | National Environment Agency / Weather forecast for next 2 hours, next 24 hours and next 4 days. |