# Smoothing Methods for Nonparametric Regression and Density Estimation

## Documentation for package ‘sm’ version 2.2-5.7

- DESCRIPTION file.

## Help Pages

aircraft | These data record six characteristics of aircraft designs which appeared during the twentieth century
airpc | These data list the first two principal component scores from the aircraft data, which record six characteristics of aircraft designs throughout the twentieth century
binning | Construct frequency table from raw data in 1, 2 or 3 dimensions.
birth | Low birthweight in babies
bissell | Flaws in cloth
bonions | Yield-density relationship for Brown Imperial Spanish onions
britpts | Coastline of the UK and Ireland
citrate | The relationship between plasma citrate and carbohydrate metabolites
coalash | Coal ash in mining samples
dogs | Coronary sinus potassium in dogs
follicle | Ovarian follicle counts
geys3d | Duration and the time between eruptions for the Old Faithful Geyser
geyser | Old Faithful Geyser Data
h.select | Selection of the smoothing parameter
hcv | Cross-validatory choice of smoothing parameter
hnorm | Normal optimal choice of smoothing parameter in density estimation
hsj | Sheather-Jones choice of smoothing parameter for density estimation
lcancer | Spatial positions of cases of laryngeal cancer
mackerel | The abundance of mackerel eggs
magrem | Magnetic remanence
mildew | Mildew control
mosses | Heavy metals in mosses in Galicia.
muscle | Rat skeletal muscles
nile | Water level of the River Nile
nise | Integrated squared error between a density estimate and a Normal density
nmise | mean integrated squared error for density estimation with normal data
nnbr | nearest neighbour distances from data in one or two dimensions
pause | Pause before continuing execution
poles | Positions of the south pole
provide.data | Making data available as data.frame
radioc | Radiocarbon in Irish oak
sig.trace | A significance trace for a hypothesis test
sm | The sm package: summary information
sm.ancova | Nonparametric analysis of covariance
sm.autoregression | Nonparametric estimation of the autoregression function
sm.binomial | Nonparametric logistic regression
sm.binomial.bootstrap | Bootstrap goodness-of-fit test for a logistic regression model.
sm.density | Nonparametric density estimation in one, two or three dimensions.
sm.density.compare | Comparison of univariate density estimates
sm.discontinuity | The detection of discontinuities in a regression curve or surface.
sm.monotonicity | A test of monotonicity in a regression curve.
sm.options | Set or return options of sm library
sm.pca | Smooth principal components analysis
sm.poisson | Nonparametric Poisson regression
sm.poisson.bootstrap | Bootstrap goodness-of-fit test for a Poisson regression model
sm.regression | Nonparametric regression with one or two covariates.
sm.regression.autocor | Nonparametric regression with autocorrelated errors
sm.rm | Nonparametric analysis of repeated measurements data
sm.script | Running a script associated to the sm library
sm.sigma | Estimation of the error standard deviation in nonparametric regression.
sm.sigma2.compare | Comparison across two groups of the error standard deviation in nonparametric regression with two covariates.
sm.sphere | Nonparametric density estimation for spherical data.
sm.surface3d | Adding a regression surface to an rgl plot.
sm.survival | Nonparametric regression with survival data.
sm.ts.pdf | Nonparametric density estimation of stationary time series data
sm.variogram | Confidence intervals and tests based on smoothing an empirical variogram.
smacker | Mackerel data from a Spanish survey
stanford | Survival times from the Stanford Heart Transplant Study
tephra | Tephra layer
trawl | Trawl data from the Great Barrier Reef
trout | Potassium cyanate and trout eggs
wonions | Yield-density relationship for White Imperial Spanish onion plants
worm | Human parasitic worm infections