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# Copyright 2013-2023 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
from spack.package import *
class RInterp(RPackage):
"""Interpolation Methods.
Bivariate data interpolation on regular and irregular grids, either linear
or using splines are the main part of this package. It is intended to
provide FOSS replacement functions for the ACM licensed akima::interp and
tripack::tri.mesh functions. Linear interpolation is implemented in
interp::interp(..., method="linear"), this corresponds to the call
akima::interp(..., linear=TRUE) which is the default setting and covers
most of akima::interp use cases in depending packages. A re-implementation
of Akimas irregular grid spline interpolation (akima::interp(...,
linear=FALSE)) is now also available via interp::interp(...,
method="akima"). Estimators for partial derivatives are now also available
in interp::locpoly(), these are a prerequisite for the spline
interpolation. The basic part is a GPLed triangulation algorithm (sweep
hull algorithm by David Sinclair) providing the starting point for the
irregular grid interpolator. As side effect this algorithm is also used to
provide replacements for almost all functions of the tripack package which
also suffers from the same ACM license restrictions. All functions are
designed to be backward compatible with their akima / tripack
counterparts."""
cran = "interp"
license("GPL-2.0-or-later")
version("1.1-4", sha256="4f7b5d388132a4d76e8635e2a7c4fa0d705df2b49e7d108faa16ce2236e34d06")
version("1.1-3", sha256="b74e606b38cfb02985c1f9e3e45093620f76c0307b1b0b4058761e871eb5fa3f")
depends_on("r@3.5.0:", type=("build", "run"))
depends_on("r-rcpp@0.12.9:", type=("build", "run"))
depends_on("r-deldir", type=("build", "run"))
depends_on("r-rcppeigen", type=("build", "run"))
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