drop_unspec_vars: Drop Unspecified Variables

In metatools: Enable the Use of 'metacore' to Help Create and Check Dataset

Drop Unspecified Variables

Description

This function drops all unspecified variables. It will throw and error if the dataset does not contain all expected variables.

Usage

drop_unspec_vars(dataset, metacore, dataset_name = deprecated())

Arguments

dataset	Dataset to change
metacore	metacore object that only contains the specifications for the dataset of interest.
dataset_name	Optional string to specify the dataset. This is only needed if the metacore object provided hasn't already been subsetted. Note: Deprecated in version 0.2.0. The dataset_name argument will be removed in a future release. Please use metacore::select_dataset to subset the metacore object to obtain metadata for a single dataset.

Value

Dataset with only specified columns

Examples

library(metacore)
library(haven)
library(dplyr)
load(metacore_example("pilot_ADaM.rda"))
spec <- metacore %>% select_dataset("ADSL")
data <- read_xpt(metatools_example("adsl.xpt")) %>%
  select(USUBJID, SITEID) %>%
  mutate(foo = "Hello")
drop_unspec_vars(data, spec)

metatools documentation built on Aug. 12, 2025, 1:08 a.m.