tidyweather (version 0.2.0)

check_weather: Check weather records for data quality issues

Description

This function validates weather records for:

• Continuous weather data (no gaps in dates)

• No missing values in key columns (mint, maxt, radn, rain)

• No extreme values (e.g., less than -100 or above 100 for temperature, less than 0 for radiation and rain)

• Latitude and longitude columns exist and contain a single non-NA value for all records

Usage

check_weather(
  data,
  key_cols = c("mint", "maxt", "radn", "rain"),
  temp_range = c(-100, 100),
  radn_range = c(0, 50),
  rain_range = c(0, 500),
  stop_on_error = FALSE
)

Value

If stop_on_error is FALSE, returns a list with the following components:

is_valid

Logical indicating if all checks passed

date_gaps

Data frame of date gaps found, or NULL if none

missing_values

Data frame summarizing missing values, or NULL if none

extreme_values

Data frame of rows with extreme values, or NULL if none

If stop_on_error is TRUE and issues are found, the function stops with an error message.

Arguments

data

A data.frame or tibble containing weather records with at minimum a date column, latitude, longitude, and key weather variables (mint, maxt, radn, rain).

key_cols

A character vector of column names to check for missing values and extreme values. Default is c("mint", "maxt", "radn", "rain").

temp_range

A numeric vector of length 2 specifying the acceptable range for temperature values (mint, maxt). Default is c(-100, 100).

radn_range

A numeric vector of length 2 specifying the acceptable range for radiation values. Default is c(0, 50).

rain_range

A numeric vector of length 2 specifying the acceptable range for rainfall values. Default is c(0, 500).

stop_on_error

Logical. If TRUE, the function will stop with an error when issues are found. If FALSE, it will return a list of issues. Default is FALSE.

Examples

file <- system.file("extdata/ppd_72150.met", package = "tidyweather")
records <- read_weather(file)
result <- check_weather(records)
if (result$is_valid) {
  print("Weather data passed all quality checks")
} else {
  print(result)
}