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Create a date_source object

Source: R/derive_var_extreme_date.R
date_source.Rd

[Deprecated] The date_source() function has been deprecated in favor of event().

Create a date_source object as input for derive_var_extreme_dt() and derive_var_extreme_dtm().

Usage 

date_source(dataset_name, filter = NULL, date, set_values_to = NULL)

Arguments

dataset_name

The name of the dataset, i.e. a string, used to search for the date.

Default value

none

filter

An unquoted condition for filtering dataset.

Comparing derived numeric variables to fixed values, e.g., PCHG <= -90, may give unexpected results due to floating point representation. For details and solutions see the "Floating Point Comparisons" section in vignette("concepts_conventions").

Default value

NULL

date

A variable or an expression providing a date. A date or a datetime can be specified. An unquoted symbol or expression is expected.

Default value

none

set_values_to

Variables to be set

Default value

NULL

Value

An object of class date_source.

See also

derive_var_extreme_dtm(), derive_var_extreme_dt()

Other deprecated: derive_param_extreme_record(), derive_var_dthcaus(), derive_var_extreme_dt(), derive_var_extreme_dtm(), derive_var_merged_summary(), dthcaus_source(), get_summary_records()