check_dataframe_variable: Check if a data.frame contains variables

In INBO-Natura2000/n2khelper: Auxiliary Functions for the Analysis and Reporting of the Natura 2000 Monitoring

Check if a data.frame contains variables

Description

Check if a data.frame contains variables

Usage

check_dataframe_variable(
  df,
  variable,
  name = "df",
  force_na = FALSE,
  error = TRUE
)

Arguments

df	the data.frame to check
variable	either a character vector with the names of the variable to check or a named list. The names of the list must match the names of the required variables in the data.frame. The elements of the list contain the accepted classes for each varaible.
name	the name of the data.frame to use in the error message
force_na	check the class of variables with all NA
error	When TRUE (default), the function returns an error when a variable is missing. Otherwise it returns a warning.

Value

The function returns TRUE when all variables are present. If returns FALSE when a variable is missing and error = FALSE.

Examples

check_dataframe_variable(
 df = data.frame(a = integer(0)),
 variable = "a"
)
check_dataframe_variable(
 df = data.frame(a = integer(0)),
 variable = list(a = c("integer", "numeric"))
)

INBO-Natura2000/n2khelper documentation built on April 5, 2022, 5:40 p.m.