is_index

is_chainable_index

is_direct_index

Test if an object is a index object or a subclass of an index object.

Most price indexes are made with a two-step procedure, where
period-over-period elemental indexes are first calculated for a collection
of elemental aggregates at each point in time, and then aggregated according
to a price index aggregation structure. These indexes can then be chained
together to form a time series that gives the evolution of prices with
respect to a fixed base period. This package contains a collection of
functions that revolve around this work flow, making it easy to build
standard price indexes, and implement the methods described by
Balk (2008, <doi:10.1017/CBO9780511720758>), von der Lippe (2007,
<doi:10.3726/978-3-653-01120-3>), and the CPI manual (2020,
<doi:10.5089/9781484354841.069>) for bilateral price indexes.

Steve Martin

piar

Price Index Aggregation

is_index function

<dl><dt>x</dt>
<dd>An object to test.</dd></dl>

Arguments

Test if an object is a price index — is_index

<dl>

<dt>x</dt>
<dd>An object to test.</dd>

</dl>

is_index: Test if an object is a price index

Description

Usage

Value

Arguments