Functions for kernel smoothing (and density estimation)
  corresponding to the book: 
  Wand, M.P. and Jones, M.C. (1995) "Kernel Smoothing".

Matt Wand [aut],
  Cleve Moler [ctb] (LINPACK routines in src/d*),
  Brian Ripley [trl, cre, ctb] (R port and updates)

Smoothing Methods for Nonparametric Regression and Density
Estimation

Adrian Bowman and Adelchi Azzalini. 
         Ported to R by B. D. Ripley <ripley@stats.ox.ac.uk> up to version 2.0,
	      version 2.1 by Adrian Bowman and Adelchi Azzalini,
	      version 2.2 by Adrian Bowman.

rgl, misc3d, interp, gam, tkrplot, rpanel (>= 1.1-4), tcltk

This is software linked to the book
  'Applied Smoothing Techniques for Data Analysis -
  The Kernel Approach with S-Plus Illustrations' Oxford University Press.

Tests and assertions to perform frequent argument checks. A
    substantial part of the package was written in C to minimize any worries
    about execution time overhead.

c(
    person("Michel", "Lang", NULL, "michellang@gmail.com",
      role = c("cre", "aut"), comment = c(ORCID = "0000-0001-9754-0393")),
    person("Bernd", "Bischl", NULL, "bernd_bischl@gmx.net", role = "ctb"),
    person("Dénes", "Tóth", NULL, "toth.denes@kogentum.hu", role = "ctb",
      comment = c(ORCID = "0000-0003-4262-3217"))
    )

R6, fastmatch, data.table (>= 1.9.8), devtools, ggplot2,
knitr, magrittr, microbenchmark, rmarkdown, testthat (>=
3.0.4), tinytest (>= 1.1.0), tibble

'AssertCollection.R' 'allMissing.R' 'anyInfinite.R'
'anyMissing.R' 'anyNaN.R' 'asInteger.R' 'assert.R' 'helper.R'
'makeExpectation.R' 'makeTest.R' 'makeAssertion.R'
'checkAccess.R' 'checkArray.R' 'checkAtomic.R'
'checkAtomicVector.R' 'checkCharacter.R' 'checkChoice.R'
'checkClass.R' 'checkComplex.R' 'checkCount.R'
'checkDataFrame.R' 'checkDataTable.R' 'checkDate.R'
'checkDirectoryExists.R' 'checkDisjunct.R' 'checkDouble.R'
'checkEnvironment.R' 'checkFALSE.R' 'checkFactor.R'
'checkFileExists.R' 'checkFlag.R' 'checkFormula.R'
'checkFunction.R' 'checkInt.R' 'checkInteger.R'
'checkIntegerish.R' 'checkList.R' 'checkLogical.R'
'checkMatrix.R' 'checkMultiClass.R' 'checkNamed.R'
'checkNames.R' 'checkNull.R' 'checkNumber.R' 'checkNumeric.R'
'checkOS.R' 'checkPOSIXct.R' 'checkPathForOutput.R'
'checkPermutation.R' 'checkR6.R' 'checkRaw.R' 'checkScalar.R'
'checkScalarNA.R' 'checkSetEqual.R' 'checkString.R'
'checkSubset.R' 'checkTRUE.R' 'checkTibble.R' 'checkVector.R'
'coalesce.R' 'isIntegerish.R' 'matchArg.R' 'qassert.R'
'qassertr.R' 'vname.R' 'wfwl.R' 'zzz.R'