Check all filters have more than one level — precheck_filter_not

Validates that every filter column in the data has at least two distinct values. A filter with only one level provides no analytical value and should be removed from the metadata.

Usage

precheck_filter_not_singular(
  data,
  meta,
  verbose = FALSE,
  stop_on_error = FALSE
)

Arguments

data: A data frame of the data file
meta: A data frame of the metadata file
verbose: logical, if TRUE prints feedback messages to console for every test, if FALSE run silently
stop_on_error: logical, if TRUE will stop with an error if the result is "FAIL", and will throw genuine warning if result is "WARNING"

Value

a single row data frame

Examples

precheck_filter_not_singular(example_data, example_meta)
#>                 check result                              message guidance_url
#> 1 filter_not_singular   PASS All filters have two or more levels.           NA
precheck_filter_not_singular(example_data, example_meta, verbose = TRUE)
#> ✔ All filters have two or more levels.
#>                 check result                              message guidance_url
#> 1 filter_not_singular   PASS All filters have two or more levels.           NA