switchr - Installing, Managing, and Switching Between Distinct Sets of Installed Packages

Provides an abstraction for managing, installing, and switching between sets of installed R packages. This allows users to maintain multiple package libraries simultaneously, e.g. to maintain strict, package-version-specific reproducibility of many analyses, or work within a development/production release paradigm. Introduces a generalized package installation process which supports multiple repository and non-repository sources and tracks package provenance.

Last updated 2 years ago

6.49 score 59 stars 52 scripts 440 downloads

SearchTrees - Spatial Search Trees

The QuadTree data structure is useful for fast, neighborhood-restricted lookups. We use it to implement fast k-Nearest Neighbor and Rectangular range lookups in 2 dimenions. The primary target is high performance interactive graphics.

Last updated 2 years ago

4.17 score 2 stars 4 packages 61 scripts 524 downloads

fastdigest - Fast, Low Memory Footprint Digests of R Objects

Provides an R interface to Bob Jenkin's streaming, non-cryptographic 'SpookyHash' hash algorithm for use in digest-based comparisons of R objects. 'fastdigest' plugs directly into R's internal serialization machinery, allowing digests of all R objects the serialize() function supports, including reference-style objects via custom hooks. Speed is high and scales linearly by object size; memory usage is constant and negligible.

Last updated 8 months ago

3.35 score 2 packages 74 scripts 347 downloads