Tools to Work with the 'Dark Sky' 'API'

Provides programmatic access to the 'Dark Sky' 'API' < https://darksky.net/dev/docs>, which provides current or historical global weather conditions.


darksky : Tools to Work with the Dark Sky API

The following functions are implemented:

  • darksky_api_key : Get or set DARKSKY_API_KEY value
  • get_current_forecast : Retrieve the current forecast (for the next week)
  • get_forecast_for : Retrieve weather data for a specific place/time
  • plot.darksky : Plot method for darksky objects
  • print.darksky : A tad more human readable default printing
devtools::install_github("hrbrmstr/darksky")
library(darksky)
library(purrr)
 
# current verison
packageVersion("darksky")
## [1] '1.0.0'
now <- get_current_forecast(43.2672, -70.8617)
print(now)
## minutely 
## ======================================================================================================================== 
## Observations: 61
## Variables: 3
## $ time              <dttm> 2016-09-21 09:42:00, 2016-09-21 09:43:00, 2016-09-21 09:44:00, 2016-09-21 09:45:00, 2016...
## $ precipIntensity   <int> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,...
## $ precipProbability <int> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,...
## 
## hourly 
## ======================================================================================================================== 
## Observations: 49
## Variables: 16
## $ time                <dttm> 2016-09-21 09:00:00, 2016-09-21 10:00:00, 2016-09-21 11:00:00, 2016-09-21 12:00:00, 20...
## $ summary             <chr> "Clear", "Clear", "Clear", "Clear", "Clear", "Clear", "Clear", "Clear", "Clear", "Clear...
## $ icon                <chr> "clear-day", "clear-day", "clear-day", "clear-day", "clear-day", "clear-day", "clear-da...
## $ precipIntensity     <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...
## $ precipProbability   <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...
## $ temperature         <dbl> 67.95, 70.92, 74.12, 77.05, 79.42, 81.18, 82.97, 82.24, 80.00, 76.24, 71.42, 67.80, 65....
## $ apparentTemperature <dbl> 67.95, 70.92, 74.12, 77.05, 79.42, 80.86, 82.11, 81.43, 79.86, 76.24, 71.42, 67.80, 65....
## $ dewPoint            <dbl> 58.24, 58.80, 57.98, 56.86, 55.81, 55.05, 55.05, 54.07, 52.83, 51.97, 51.69, 51.24, 50....
## $ humidity            <dbl> 0.71, 0.66, 0.57, 0.50, 0.44, 0.41, 0.38, 0.38, 0.39, 0.43, 0.50, 0.55, 0.59, 0.62, 0.6...
## $ windSpeed           <dbl> 7.88, 6.81, 6.33, 5.52, 5.29, 5.36, 5.46, 5.62, 5.39, 4.33, 3.49, 3.38, 3.79, 4.18, 4.4...
## $ windBearing         <int> 308, 306, 303, 299, 289, 279, 268, 265, 266, 263, 259, 256, 259, 263, 269, 275, 279, 28...
## $ visibility          <dbl> 9.90, 9.96, 10.00, 10.00, 10.00, 10.00, 10.00, 10.00, 10.00, 10.00, 10.00, 10.00, 10.00...
## $ cloudCover          <dbl> 0.09, 0.15, 0.20, 0.22, 0.18, 0.11, 0.07, 0.07, 0.06, 0.04, 0.04, 0.05, 0.11, 0.17, 0.2...
## $ pressure            <dbl> 1020.18, 1020.32, 1020.35, 1020.21, 1019.96, 1019.74, 1019.55, 1019.40, 1019.40, 1019.6...
## $ ozone               <dbl> 268.89, 268.71, 268.54, 268.48, 268.42, 268.21, 267.76, 267.15, 266.60, 266.18, 265.81,...
## $ precipType          <chr> NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA,...
## 
## daily 
## ======================================================================================================================== 
## Observations: 8
## Variables: 27
## $ time                       <dttm> 2016-09-21, 2016-09-22, 2016-09-23, 2016-09-24, 2016-09-25, 2016-09-26, 2016-09...
## $ summary                    <chr> "Clear throughout the day.", "Partly cloudy overnight.", "Light rain starting in...
## $ icon                       <chr> "clear-day", "partly-cloudy-night", "rain", "clear-day", "clear-day", "partly-cl...
## $ sunriseTime                <dttm> 2016-09-21 06:31:22, 2016-09-22 06:32:28, 2016-09-23 06:33:34, 2016-09-24 06:34...
## $ sunsetTime                 <dttm> 2016-09-21 18:43:59, 2016-09-22 18:42:09, 2016-09-23 18:40:19, 2016-09-24 18:38...
## $ moonPhase                  <dbl> 0.68, 0.72, 0.75, 0.79, 0.83, 0.86, 0.90, 0.93
## $ precipIntensity            <dbl> 0.0000, 0.0000, 0.0027, 0.0000, 0.0000, 0.0000, 0.0143, 0.0138
## $ precipIntensityMax         <dbl> 0.0000, 0.0000, 0.0147, 0.0000, 0.0000, 0.0000, 0.0371, 0.0388
## $ precipProbability          <dbl> 0.00, 0.00, 0.45, 0.00, 0.00, 0.00, 0.54, 0.55
## $ temperatureMin             <dbl> 60.34, 56.74, 54.80, 42.92, 38.56, 37.33, 40.13, 53.14
## $ temperatureMinTime         <dttm> 2016-09-21 07:00:00, 2016-09-22 06:00:00, 2016-09-23 23:00:00, 2016-09-24 23:00...
## $ temperatureMax             <dbl> 82.97, 77.68, 76.68, 64.18, 58.58, 63.20, 55.01, 56.65
## $ temperatureMaxTime         <dttm> 2016-09-21 15:00:00, 2016-09-22 14:00:00, 2016-09-23 12:00:00, 2016-09-24 14:00...
## $ apparentTemperatureMin     <dbl> 60.34, 56.74, 54.80, 40.24, 34.30, 33.78, 40.13, 53.14
## $ apparentTemperatureMinTime <dttm> 2016-09-21 07:00:00, 2016-09-22 06:00:00, 2016-09-23 23:00:00, 2016-09-24 23:00...
## $ apparentTemperatureMax     <dbl> 82.11, 77.68, 76.68, 64.18, 58.58, 63.20, 55.01, 56.65
## $ apparentTemperatureMaxTime <dttm> 2016-09-21 15:00:00, 2016-09-22 14:00:00, 2016-09-23 12:00:00, 2016-09-24 14:00...
## $ dewPoint                   <dbl> 55.99, 54.08, 54.32, 38.89, 33.29, 36.45, 44.02, 51.41
## $ humidity                   <dbl> 0.66, 0.66, 0.66, 0.61, 0.62, 0.66, 0.87, 0.89
## $ windSpeed                  <dbl> 4.50, 1.44, 4.07, 6.83, 7.01, 2.88, 4.35, 8.62
## $ windBearing                <int> 279, 166, 247, 308, 312, 277, 7, 59
## $ visibility                 <dbl> 9.87, 10.00, 10.00, 10.00, NA, NA, NA, NA
## $ cloudCover                 <dbl> 0.11, 0.07, 0.49, 0.06, 0.00, 0.05, 0.92, 1.00
## $ pressure                   <dbl> 1019.58, 1020.49, 1015.55, 1018.06, 1019.44, 1019.53, 1019.43, 1024.68
## $ ozone                      <dbl> 267.11, 259.91, 267.42, 306.79, 314.66, 298.59, 289.30, 291.89
## $ precipIntensityMaxTime     <dttm> NA, NA, 2016-09-23 20:00:00, NA, NA, NA, 2016-09-27 23:00:00, 2016-09-28 01:00:00
## $ precipType                 <chr> NA, NA, "rain", NA, NA, NA, "rain", "rain"
## 
## currently 
## ======================================================================================================================== 
## Observations: 1
## Variables: 17
## $ time                 <dttm> 2016-09-21 09:42:30
## $ summary              <chr> "Clear"
## $ icon                 <chr> "clear-day"
## $ nearestStormDistance <int> 109
## $ nearestStormBearing  <int> 204
## $ precipIntensity      <int> 0
## $ precipProbability    <int> 0
## $ temperature          <dbl> 70.06
## $ apparentTemperature  <dbl> 70.06
## $ dewPoint             <dbl> 58.66
## $ humidity             <dbl> 0.67
## $ windSpeed            <dbl> 7.12
## $ windBearing          <int> 307
## $ visibility           <dbl> 9.94
## $ cloudCover           <dbl> 0.13
## $ pressure             <dbl> 1020.28
## $ ozone                <dbl> 268.76
then <- get_forecast_for(43.2672, -70.8617, "2013-05-06T12:00:00-0400", add_headers=TRUE)
print(then)
## hourly 
## ======================================================================================================================== 
## Observations: 24
## Variables: 14
## $ time                <dttm> 2013-05-06 00:00:00, 2013-05-06 01:00:00, 2013-05-06 02:00:00, 2013-05-06 03:00:00, 20...
## $ summary             <chr> "Clear", "Clear", "Clear", "Clear", "Clear", "Clear", "Clear", "Partly Cloudy", "Partly...
## $ icon                <chr> "clear-night", "clear-night", "clear-night", "clear-night", "clear-night", "clear-night...
## $ precipIntensity     <int> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
## $ precipProbability   <int> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
## $ temperature         <dbl> 38.85, 37.09, 35.98, 34.41, 32.17, 32.31, 32.31, 38.90, 43.85, 48.67, 52.36, 56.46, 60....
## $ apparentTemperature <dbl> 37.07, 37.09, 35.98, 34.41, 32.17, 32.31, 29.67, 38.90, 41.82, 46.09, 52.36, 56.46, 60....
## $ dewPoint            <dbl> 34.70, 33.68, 33.52, 32.31, 30.45, 30.59, 30.41, 36.43, 38.67, 41.70, 43.14, 41.86, 41....
## $ humidity            <dbl> 0.85, 0.87, 0.91, 0.92, 0.93, 0.93, 0.93, 0.91, 0.82, 0.77, 0.71, 0.58, 0.50, 0.47, 0.4...
## $ windSpeed           <dbl> 3.00, NA, NA, NA, 2.94, NA, 3.00, NA, 3.94, 5.98, 5.52, 5.82, 6.03, 8.81, 9.40, 9.17, 7...
## $ windBearing         <int> 210, NA, NA, NA, 304, NA, 330, NA, 184, 166, 160, 173, 127, 101, 108, 141, 142, 127, 14...
## $ visibility          <dbl> 9.84, 8.23, 8.76, 8.46, 7.03, 6.77, 5.85, 8.40, 8.46, 10.00, 10.00, 10.00, 10.00, 10.00...
## $ cloudCover          <dbl> 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.59, 0.25, 0.16, 0.05, 0.05, 0.05, 0.05, 0.0...
## $ pressure            <dbl> 1024.98, 1024.88, 1024.66, 1024.38, 1024.04, 1024.10, 1024.40, 1024.92, 1025.14, 1025.3...
## 
## daily 
## ======================================================================================================================== 
## Observations: 1
## Variables: 24
## $ time                       <dttm> 2013-05-06
## $ summary                    <chr> "Foggy overnight."
## $ icon                       <chr> "fog"
## $ sunriseTime                <dttm> 2013-05-06 05:30:54
## $ sunsetTime                 <dttm> 2013-05-06 19:51:43
## $ moonPhase                  <dbl> 0.9
## $ precipIntensity            <int> 0
## $ precipIntensityMax         <int> 0
## $ precipProbability          <int> 0
## $ temperatureMin             <dbl> 32.17
## $ temperatureMinTime         <dttm> 2013-05-06 04:00:00
## $ temperatureMax             <dbl> 63.03
## $ temperatureMaxTime         <dttm> 2013-05-06 14:00:00
## $ apparentTemperatureMin     <dbl> 29.67
## $ apparentTemperatureMinTime <dttm> 2013-05-06 06:00:00
## $ apparentTemperatureMax     <dbl> 63.03
## $ apparentTemperatureMaxTime <dttm> 2013-05-06 14:00:00
## $ dewPoint                   <dbl> 39.32
## $ humidity                   <dbl> 0.76
## $ windSpeed                  <dbl> 4.54
## $ windBearing                <int> 140
## $ visibility                 <dbl> 8.05
## $ cloudCover                 <dbl> 0.18
## $ pressure                   <dbl> 1023.47
## 
## currently 
## ======================================================================================================================== 
## Observations: 1
## Variables: 14
## $ time                <dttm> 2013-05-06 12:00:00
## $ summary             <chr> "Clear"
## $ icon                <chr> "clear-day"
## $ precipIntensity     <int> 0
## $ precipProbability   <int> 0
## $ temperature         <dbl> 60.5
## $ apparentTemperature <dbl> 60.5
## $ dewPoint            <dbl> 41.59
## $ humidity            <dbl> 0.5
## $ windSpeed           <dbl> 6.03
## $ windBearing         <int> 127
## $ visibility          <int> 10
## $ cloudCover          <dbl> 0.05
## $ pressure            <dbl> 1024.18
# getting data for more than one location
 
more_than_one <- data.frame(loc=c("Maine", "Seattle"),
                            lon=c(43.2672, 47.6097),
                            lat=c(70.8617, 122.3331),
                            when=c("2013-05-06T12:00:00-0400",
                                   "2013-05-06T12:00:00-0400"),
                            stringsAsFactors=FALSE)
 
bigger_list <- pmap(list(more_than_one$lon, more_than_one$lat,
                         more_than_one$when),
                    get_forecast_for)
names(bigger_list) <- more_than_one$loc
 
bigger_list$Seattle
## hourly 
## ======================================================================================================================== 
## Observations: 24
## Variables: 13
## $ time                <dttm> 2013-05-06 12:00:00, 2013-05-06 13:00:00, 2013-05-06 14:00:00, 2013-05-06 15:00:00, 20...
## $ summary             <chr> "Partly Cloudy", "Clear", "Clear", "Partly Cloudy", "Partly Cloudy", "Partly Cloudy", "...
## $ icon                <chr> "partly-cloudy-night", "clear-night", "clear-night", "partly-cloudy-night", "partly-clo...
## $ precipType          <chr> "rain", "rain", "rain", "rain", "rain", "rain", "rain", "rain", "rain", "rain", "rain",...
## $ temperature         <dbl> 57.34, 55.78, 54.52, 53.33, 52.43, 52.86, 55.25, 58.97, 63.02, 67.49, 72.29, 76.25, 78....
## $ apparentTemperature <dbl> 57.34, 55.78, 54.52, 53.33, 52.43, 52.86, 55.25, 58.97, 63.02, 67.49, 72.29, 76.25, 78....
## $ dewPoint            <dbl> 36.96, 37.89, 38.45, 38.50, 38.36, 38.38, 38.42, 38.10, 37.66, 37.57, 37.32, 36.72, 36....
## $ humidity            <dbl> 0.46, 0.51, 0.54, 0.57, 0.59, 0.58, 0.53, 0.46, 0.39, 0.33, 0.28, 0.24, 0.22, 0.21, 0.2...
## $ windSpeed           <dbl> 3.84, 4.39, 4.78, 4.61, 4.28, 4.45, 5.59, 7.20, 8.45, 8.99, 9.21, 9.30, 9.37, 9.46, 9.3...
## $ windBearing         <int> 182, 176, 174, 176, 181, 186, 188, 189, 190, 193, 197, 198, 192, 184, 180, 184, 194, 20...
## $ visibility          <dbl> 9.65, 9.42, 9.25, 9.21, 9.23, 9.25, 9.24, 9.23, 9.25, 9.30, 9.37, 9.43, 9.45, 9.45, 9.4...
## $ cloudCover          <dbl> 0.25, 0.21, 0.22, 0.33, 0.47, 0.58, 0.60, 0.57, 0.56, 0.59, 0.63, 0.66, 0.70, 0.73, 0.7...
## $ pressure            <dbl> 1013.52, 1013.49, 1013.39, 1013.14, 1012.82, 1012.56, 1012.55, 1012.60, 1012.37, 1011.6...
## 
## daily 
## ======================================================================================================================== 
## Observations: 1
## Variables: 22
## $ time                       <dttm> 2013-05-06 12:00:00
## $ summary                    <chr> "Partly cloudy throughout the day."
## $ icon                       <chr> "partly-cloudy-day"
## $ sunriseTime                <dttm> 2013-05-06 16:25:51
## $ sunsetTime                 <dttm> 2013-05-07 07:11:10
## $ moonPhase                  <dbl> 0.91
## $ precipType                 <chr> "rain"
## $ temperatureMin             <dbl> 52.43
## $ temperatureMinTime         <dttm> 2013-05-06 16:00:00
## $ temperatureMax             <dbl> 84.52
## $ temperatureMaxTime         <dttm> 2013-05-07 04:00:00
## $ apparentTemperatureMin     <dbl> 52.43
## $ apparentTemperatureMinTime <dttm> 2013-05-06 16:00:00
## $ apparentTemperatureMax     <dbl> 81.6
## $ apparentTemperatureMaxTime <dttm> 2013-05-07 04:00:00
## $ dewPoint                   <dbl> 37.33
## $ humidity                   <dbl> 0.35
## $ windSpeed                  <dbl> 6.5
## $ windBearing                <int> 192
## $ visibility                 <dbl> 9.36
## $ cloudCover                 <dbl> 0.51
## $ pressure                   <dbl> 1008.89
## 
## currently 
## ======================================================================================================================== 
## Observations: 1
## Variables: 13
## $ time                <dttm> 2013-05-06 12:00:00
## $ summary             <chr> "Partly Cloudy"
## $ icon                <chr> "partly-cloudy-night"
## $ precipType          <chr> "rain"
## $ temperature         <dbl> 57.34
## $ apparentTemperature <dbl> 57.34
## $ dewPoint            <dbl> 36.96
## $ humidity            <dbl> 0.46
## $ windSpeed           <dbl> 3.84
## $ windBearing         <int> 182
## $ visibility          <dbl> 9.65
## $ cloudCover          <dbl> 0.25
## $ pressure            <dbl> 1013.52
bigger_list$Maine
## hourly 
## ======================================================================================================================== 
## Observations: 24
## Variables: 13
## $ time                <dttm> 2013-05-05 14:00:00, 2013-05-05 15:00:00, 2013-05-05 16:00:00, 2013-05-05 17:00:00, 20...
## $ summary             <chr> "Clear", "Clear", "Clear", "Clear", "Clear", "Clear", "Clear", "Clear", "Clear", "Clear...
## $ icon                <chr> "clear-night", "clear-night", "clear-night", "clear-night", "clear-night", "clear-night...
## $ precipType          <chr> "rain", "rain", "rain", "rain", "rain", "rain", "rain", "rain", "rain", "rain", "rain",...
## $ temperature         <dbl> 53.29, 52.38, 51.25, 48.31, 50.96, 50.25, 48.85, 55.50, 61.63, 61.24, 67.21, 72.04, 70....
## $ apparentTemperature <dbl> 53.29, 52.38, 51.25, 48.31, 50.96, 50.25, 48.36, 55.50, 61.63, 61.24, 67.21, 72.04, 70....
## $ dewPoint            <dbl> 35.65, 36.48, 40.43, 37.36, 38.04, 38.24, 36.79, 41.43, 41.26, 39.30, 41.98, 33.27, 39....
## $ humidity            <dbl> 0.51, 0.55, 0.66, 0.66, 0.61, 0.63, 0.63, 0.59, 0.47, 0.44, 0.40, 0.24, 0.32, 0.21, 0.2...
## $ windSpeed           <dbl> 3.41, 3.32, 13.00, 2.53, 2.05, 3.49, 3.01, 3.97, 1.12, 2.82, 6.00, 11.02, 10.65, 15.61,...
## $ windBearing         <int> 39, 48, 70, 108, 101, 134, 141, 177, 86, 9, 26, 45, 51, 56, 52, 51, 54, 55, 61, 63, 62,...
## $ visibility          <dbl> 7.59, 6.77, 6.77, 7.59, 6.77, 6.77, 8.64, 6.77, 6.77, 8.64, 6.77, 6.77, 8.74, 6.77, 6.7...
## $ cloudCover          <dbl> 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.09, 0.00, 0.00, 0.00, 0.00, 0.00, 0.04, 0.00, 0.0...
## $ pressure            <dbl> 1020.06, NA, NA, 1019.91, NA, NA, 1019.71, NA, NA, 1018.17, NA, NA, 1016.40, NA, NA, 10...
## 
## daily 
## ======================================================================================================================== 
## Observations: 1
## Variables: 22
## $ time                       <dttm> 2013-05-05 14:00:00
## $ summary                    <chr> "Clear throughout the day."
## $ icon                       <chr> "clear-day"
## $ sunriseTime                <dttm> 2013-05-05 20:04:31
## $ sunsetTime                 <dttm> 2013-05-06 10:24:22
## $ moonPhase                  <dbl> 0.88
## $ precipType                 <chr> "rain"
## $ temperatureMin             <dbl> 48.31
## $ temperatureMinTime         <dttm> 2013-05-05 17:00:00
## $ temperatureMax             <dbl> 75.33
## $ temperatureMaxTime         <dttm> 2013-05-06 06:00:00
## $ apparentTemperatureMin     <dbl> 48.31
## $ apparentTemperatureMinTime <dttm> 2013-05-05 17:00:00
## $ apparentTemperatureMax     <dbl> 75.33
## $ apparentTemperatureMaxTime <dttm> 2013-05-06 06:00:00
## $ dewPoint                   <dbl> 37.53
## $ humidity                   <dbl> 0.42
## $ windSpeed                  <int> 8
## $ windBearing                <int> 60
## $ visibility                 <dbl> 7.28
## $ cloudCover                 <dbl> 0.01
## $ pressure                   <dbl> 1017.24
## 
## currently 
## ======================================================================================================================== 
## Observations: 1
## Variables: 12
## $ time                <dttm> 2013-05-06 12:00:00
## $ summary             <chr> "Clear"
## $ icon                <chr> "clear-night"
## $ precipType          <chr> "rain"
## $ temperature         <dbl> 67.17
## $ apparentTemperature <dbl> 67.17
## $ dewPoint            <dbl> 33.18
## $ humidity            <dbl> 0.28
## $ windSpeed           <dbl> 11.22
## $ windBearing         <int> 72
## $ visibility          <dbl> 6.77
## $ cloudCover          <int> 0
print(sprintf("You have used %s API calls.", then$`x-forecast-api-calls`))
## [1] "You have used 8 API calls."
plot(now)

library(darksky)
library(testthat)
## 
## Attaching package: 'testthat'

## The following object is masked from 'package:purrr':
## 
##     is_null
date()
## [1] "Wed Sep 21 09:42:33 2016"
test_dir("tests/")
## testthat results ========================================================================================================
## OK: 4 SKIPPED: 0 FAILED: 0
## 
## DONE ===================================================================================================================

News

darksky 1.0.0

  • CRAN release
  • Added a NEWS.md file to track changes to the package.

Reference manual

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install.packages("darksky")

1.3.0 by Bob Rudis, 2 months ago


https://github.com/hrbrmstr/darksky


Report a bug at https://github.com/hrbrmstr/darksky/issues


Browse source code at https://github.com/cran/darksky


Authors: Bob Rudis [aut, cre], Lasse Vilhelmsen [ctb], David Severski [ctb]


Documentation:   PDF Manual  


MIT + file LICENSE license


Imports stats, httr, grid, gridExtra, gtable, ggplot2, plyr, utils

Suggests testthat, covr


See at CRAN