cdoapi (R Interface for the NOAA Climate Data Online API)

This package provides an R interface for the NOAA Climate Data Online API. Through this interface, different elements of weather data like temperatures (avg/min/max), precipitation, snowfall, etc. can be accessed for various cities for specific time periods.

Installation

devtools::install_github("harihp12/cdoapi", build_vignettes = TRUE)

Authentication

To use this interface, you require a unique API access token. You can get your access token here by registering with your email address. Before using the functions provided by the cdoapi package, you should set the character token as a system variable.

Sys.setenv("NOAA_TOKEN" = "YOUR_TOKEN_GOES_IN_HERE")

Features

get_cities

Lists all the available cities for which the weather data can be fetched with get_weatherdata along with their data availability details.

cities = get_cities()
head(cities)

head(cities[which(cities$country == "SW"), ]) # Cities in Sweden
head(cities[which(cities$country == "GM"), ]) # Cities in Germany

get_weatherdata

Gets the weather data for a specified - data type (Refer here for detailed documentation about available data types), city ID, start date and end date.

# Get weatherdata for Berlin (only September)
weatherdata = get_weatherdata("TAVG", "GM000001", "2018-09-01", "2018-09-23")

simplify_weatherdata

Aggregates and simplifies weather data to an easy-to-use daily data format, which is particularly useful for cities having multiple stations.

weatherdata_simplified = simplify_weatherdata(weatherdata)

Shiny App

To load the shiny app you need to have the library installed and call the following commands on Rstudio:

library(cdoapi)
library(shiny)

runGitHub("harihp12/cdoapi")