From a given list remove those elements that are not valid conditions.

A valid condition is a character vector of predicates, where each predicate corresponds to some column name of the related data frame. (An empty character vector is considered as a valid condition too.)

Usage

remove_ill_conditions(x, data)

Arguments

x

a list of character vector

data

a matrix or a data frame

Value

a list of elements of x that are valid conditions.

See also

is_condition()

Author

Michal Burda