Aggregate Longitudinal Survey Data
Compute Balances from a Item Shares
Compute Weighted Shares By Group
Compute Weighted Mean by Group
Performs a Cross Join of Unique combinations
Extract a Time Series from a Data.table
Joins two data.tables based on keys
Aggregate Business Tendency Survey Data (and other qualitative surveys) to time series at various aggregation levels. Run aggregation of survey data in a speedy, re-traceable and a easily deployable way. Aggregation is substantially accelerated by use of data.table. This package intends to provide an interface that is less general and abstract than data.table but rather geared towards survey researchers.