new package: r-interp (#33168)

var/spack/repos/builtin/packages/r-interp/package.py

@@ -0,0 +1,38 @@
+# Copyright 2013-2022 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"
+
+    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"))