Release piar 0.5.0 · marberts/piar

Significant changes

piar now requires R >= 4.0.
is_chain_index() has been removed; use is_chainable_index() instead.
The first argument to elemental_index() is now x, not rel, to be consistent with the rest of the functions. Similarly, the first argument for expand_classification() is now x, not class.

New functions as_aggregation_structure() and is_aggregation_structure() to coerce (usually) tabular data for aggregation weights into an aggregation structure, and test if an object is an aggregation structure.
A method for [[ for index objects to extract or replace a single index value.
The weights for an aggregation structure can be replace with weights(pias) <- vector.

The levels() replacement function now gives an error for indexes and aggregation structures, rather than adding a levels attribute that does nothing.
The width argument for expand_classification() now recycles a single value.
Major overhaul of the documentation should make it easier to use.
The object structure used to represent index object has been refined.
Subscripting an index object is now much faster.
It is now possible to update an aggregation structure with a non-aggregated index.
Functions that accept a price index or an aggregation structure as an argument now attempt to coerce these arguments into an index object or aggregation structure object instead of throwing an error.

Fixed a bug where creating elemental indexes with missing product names could produce a contributions matrix with the wrong number of products.
It is now possible to chain an index with only one level.
Subscripting an index with NAs or duplicate indices is no longer allowed.