Compute spatially explicit land-use metrics for stream survey sites in GRASS GIS and R as an open-source implementation of IDW-PLUS (Inverse Distance Weighted Percent Land Use for Streams). The package includes functions for preprocessing digital elevation and streams data, and one function to compute all the spatially explicit land use metrics described in Peterson et al. (2011) <doi:10.1111/j.1365-2427.2010.02507.x> and previously implemented by Peterson and Pearse (2017) <doi:10.1111/1752-1688.12558> in ArcGIS-Python as IDW-PLUS.

Provides a cross-platform framework for dynamic binding of C libraries using a flexible Foreign Function Interface (FFI).
  The FFI supports almost all fundamental C types, multiple calling conventions, symbolic access to foreign C struct/union data types and wrapping of R functions as C callback function pointers.
  Dynamic bindings to shared C libraries are data-driven by cross-platform binding specifications using a compact plain text format; the package includes a 'DynPort' binding specification for 'SDL3' generated from current headers with 'porter'.
  The package includes a variety of technology demos and OS-specific notes for installation of shared libraries. For the underlying methods and bundled 'DynCall' libraries, see Adler (2012) <doi:10.32614/RJ-2012-004> and Adler and Philipp (2008) <https://dyncall.org>.

A comprehensive set of regular expression functions based on those found in 'Python'
    without relying on 'reticulate'. It provides functions that intend to (1) make it easier for
    users familiar with 'Python' to work with regular expressions, (2) reduce the complexity often
    associated with regular expressions code, (3) and enable users to write more readable and
    maintainable code that relies on regular expression-based pattern matching.

Pattern matching, extraction, replacement and other string
  processing operations using Google's RE2 <https://github.com/google/re2>
  regular-expression engine. Consistent interface (similar to 'stringr').
  RE2 uses finite-automata based techniques, and offers a
  fast and safe alternative to backtracking regular-expression engines
  like those used in 'stringr', 'stringi' and other PCRE implementations.