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From CliFlo to clifro: Enhancing The National Climate Database With R

Source: R/cfUser.R
clifro.Rd

Import data from New Zealand's National Climate Database via CliFlo into R for exploring, analysis, plotting, exporting to KML, CSV, or other software.

Details

The clifro package is intended to simplify the process of data extraction, formatting and visualisation from the CliFlo web portal. It requires the user to build a query consisting of 3 main components; the user, the datatype(s) and the station(s). These are then combined using the cf_query function that sends the query to the CliFlo database and returns the results that can easily be plotted using generic plotting functions.

This package requires the user to already have a current subscription to the National Climate Database unless a public user is sought, where data is limited to Reefton Ews. Subscription is free and can obtained from https://cliflo.niwa.co.nz/pls/niwp/wsubform.intro.

See also

cf_user, cf_datatype, and cf_station for choosing the clifro user, datatypes and stations, respectively.

Examples

if (FALSE) {
# Create a public user ----------------------------------------------------

public.user = cf_user() # Defaults to "public"
public.user

# Select datatypes --------------------------------------------------------

# 9am Surface wind (m/s)
wind.dt = cf_datatype(2, 1, 4, 1)

# Daily Rain
rain.dt = cf_datatype(3, 1, 1)

# Daily temperature extremes
temp.dt = cf_datatype(4, 2, 2)

# Combine them together
all.dts = wind.dt + rain.dt + temp.dt
all.dts

# Select the Reefton Ews station ------------------------------------------

reefton.st = cf_station()
reefton.st

# Submit the query --------------------------------------------------------

# Retrieve all data from ~ six months ago at 9am
reefton.data = cf_query(public.user, all.dts, reefton.st,
                        paste(as.Date(Sys.time()) - 182, "9"))
reefton.data


# Plot the data -----------------------------------------------------------

# Plot the 9am surface wind data (first dataframe in the list) ---
reefton.data[1]

# all identical - although passed to different methods
plot(reefton.data)    #plot,cfDataList,missing-method
plot(reefton.data, 1) #plot,cfDataList,numeric-method
plot(reefton.data[1]) #plot,cfData,missing-method --> plot,cfWind,missing-method

speed_plot(reefton.data)
direction_plot(reefton.data)

# Plot the daily rain data (second dataframe in the list) ---
reefton.data[2]

# With runoff and soil deficit
plot(reefton.data, 2)

# Just plot amount of rain (mm)
plot(reefton.data, 2, include_runoff = FALSE)

# Plot the hourly temperature data (third dataframe in the list) ---
plot(reefton.data, 3)

# Pass an argument to ggplot2::theme
library(ggplot2) # for element_text()
plot(reefton.data, 3, text = element_text(size = 18))
}