What is it about?
The article discusses a new R package, i.e. PriceIndices, which is used to process scanner data and to calculate bilateral and multilateral price indices, along with their window extensions.
Why is it important?
The features that distinguish the PriceIndices package (Białek, 2021a) from similar packages are as follows: 1) the package has a rich set of functions for preparing scan- Scanner data processing in a newest version of the PriceIndices package 3 ner data sets. For example, there are functions for cleaning and filtering the data set, for product classification and so-called product matching; 2) the package contains functions for determining the basic characteristics of the analyzed data set (e.g. determining the availability of products, price-quantity correlation, the distribution of the consumption level within product subgroups, etc.); 3) the package has a very wide set of price index formulas (6 unweighted indices, 26 weighted indices, 32 chain indices, 16 multilateral indices are available); 4) the package allows us to aggregate the results of partial price indices over outlets and product subgroups; 5) the package also compares price indices graphically.