r-cran-collapse

GNU R advanced and fast data transformation

Description

A C/C++ based package for advanced data transformation and statistical computing in R that is extremely fast, flexible and parsimonious to code with, class-agnostic and programmer friendly. It is well integrated with base R, 'dplyr' / (grouped) 'tibble', 'data.table', 'plm' (panel-series and data frames), 'sf' data frames, and non-destructively handles other matrix or data frame based classes (such as 'ts', 'xts' / 'zoo', 'timeSeries', 'tsibble', 'tibbletime' etc.) --- Key Features: --- (1) Advanced statistical programming: A full set of fast statistical
    functions supporting grouped and weighted computations on vectors,
    matrices and data frames. Fast and programmable grouping, ordering,
    unique values / rows, factor generation and interactions. Fast and
    flexible functions for data manipulation and data object
    conversions.
(2) Advanced aggregation: Fast and easy multi-data-type, multi-function,
    weighted, parallelized and fully customized data aggregation.
(3) Advanced transformations: Fast row / column arithmetic, (grouped)
    replacing and sweeping out of statistics, (grouped, weighted)
    scaling / standardizing, between (averaging) and (quasi-)within
    (centering / demeaning) transformations, higher-dimensional
    centering (i.e. multiple fixed effects transformations), linear
    prediction / partialling-out, linear model fitting and testing.
(4) Advanced time-computations: Fast (sequences of) lags / leads, and
    (lagged / leaded, iterated, quasi-, log-) differences, (compounded)
    growth rates, and cumulative sums on (unordered, irregular) time
    series and panel data. Multivariate auto-, partial- and cross-
    correlation functions for panel data. Panel data to (ts-)array
    conversions.
(5) List processing: (Recursive) list search / identification,
    splitting, extraction / subsetting, data-apply, and generalized
    recursive row-binding / unlisting in 2D.
(6) Advanced data exploration: Fast (grouped, weighted, panel-
    decomposed) summary statistics for complex multilevel / panel data.

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Homepage

https://cran.r-project.org/package=collapse

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