date_convert: Convert characters to dates

In cleanepi: Clean and Standardize Epidemiological Data

Convert characters to dates

Description

Convert characters to dates

Usage

date_convert(data, cols, error_tolerance, timeframe = NULL, orders)

Arguments

data	The input <data.frame> or <linelist>
cols	A <Date> column name(s)
error_tolerance	A <numeric> between 0 and 1 indicating the proportion of entries which cannot be identified as dates to be tolerated; if this proportion is exceeded, the original vector is returned, and a message is issued; defaults to 0.4 (40 percent).
timeframe	A <vector> of 2 values of type <Date>. If provided, date values that do not fall within this timeframe will be set to NA.
orders	A <list> or <vector> of characters with the date codes for fine-grained parsing of dates. This allows for parsing of mixed dates. If a <list> is supplied, that <list> will be used for successive tries in parsing. When this is not provided (orders = NULL), the function will use the following order defined in the guesser: list( quarter_partial_dates = c("Y", "Ym", "Yq"), world_digit_months = c("Yq", "ymd", "ydm", "dmy", "mdy", "myd", "dym", "Ymd", "Ydm", "dmY", "mdY", "mYd", "dYm"), world_named_months = c("dby", "dyb", "bdy", "byd", "ybd", "ydb", "dbY", "dYb", "bdY", "bYd", "Ybd", "Ydb"), us_format = c("Omdy", "YOmd") )

Value

A <list> with the following two elements: a data frame where the specified columns have been converted into <Date> values, a boolean that tells whether numeric values that can also be of type <Date> are found in the specified columns.

cleanepi documentation built on April 4, 2025, 5:12 a.m.