na_omit_if function for conditionally removing missing values if specified checks pass.
Four types of checks are available:
prop: the maximum proportion (0 to 1) of missing values allowedn: the maximum number of missing values allowedconsec: the maximum number of consecutive missing values allowed, andn_non: the minimum number of non-missing values required.Four na_omit_if_* functions similar to na_omit_if() but for individual checks only
na_check() and four na_check_* function corresponding to the na_omit_if functions but return TRUE or FALSE
Four na_* functions for calculating the properties of missing values in a vector used in other functions