aggr_by_freq: Aggregate Data by Frequency

Description

Aggregates data from a wide-format data frame according to a specified frequency and applies aggregation and post-processing functions.

Usage

aggr_by_freq(
  table,
  freq,
  prep_fun,
  aggr_funs,
  postp_funs,
  variable_name,
  preprocess_body
)

Value

A data frame in wide format with aggregated values.

Arguments

table

[mandatory] (data.frame) A wide-format data frame.

freq

[mandatory] (character) Specifies the frequency to aggregate the data.

prep_fun

[mandatory] (function) Pre-processing function used during daily expansion prior to aggregation. This is guaranteed to be a function because read_db() replaces NULL with linear_interp().

aggr_funs

[optional] (function or list) Aggregation function(s) used when aggregating to freq.

If a single function is provided, it is used for all variables.
If an unnamed list of functions is provided, all functions are applied to all variables (treated as default).
If a named list is provided, names must be variable names (as returned by fetch_vars) and/or "default"; named entries override the default for those variables.

postp_funs

[optional] (function or list or "external") Post- processing function(s) applied after aggregation.

If a single function or NULL is provided, it is used for all variables as default.
If an unnamed list of functions is provided, all are applied to all variables (treated as default).
If a named list is provided, names must be variable names (as returned by fetch_vars) and/or "default"; named entries override the default for those variables.
If "external", functions are loaded from postp/.

Default is NULL.

variable_name

[mandatory] (character) Name of the current variable.

preprocess_body

[mandatory] (character) Body of the prep_fun function.