check_colnames | R Documentation |
Checks the column names of a data frame as returned by the colnames()
function.
The function can check the order of the columns and whether other columns are permitted.
check_colnames(
x,
colnames = character(0),
exclusive = FALSE,
order = FALSE,
x_name = substitute(x),
error = TRUE
)
x |
The data to check. |
colnames |
A character vector of the column names. |
exclusive |
A flag indicating whether other columns are not permitted. |
order |
A flag indicating whether the columns have to occur in the same order as colnames. |
x_name |
A string of the name of the object x. |
error |
A flag indicating whether to throw an informative error or immediately generate an informative message if the check fails. |
An invisible copy of x (if it doesn't throw an error).
check_missing_colnames
and check_data
data <- data.frame(x = 1, y = 2, z = 0)
check_colnames(data, c("y", "x"), error = FALSE)
check_colnames(data, c("y", "x"), exclusive = TRUE, error = FALSE)
check_colnames(data, c("y", "x"), order = TRUE, error = FALSE)
check_colnames(data, c("a"), error = FALSE)
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