alter NAMESPACE and create function documentation

NAMESPACE

 # Generated by roxygen2 (4.1.1): do not edit by hand
 
 export(biasBox)
+export(loessGui)
 export(polyGui)
 export(subsetDropAll)
 export(twoStripCombined)

man/loessGui.Rd

+% Generated by roxygen2 (4.1.1): do not edit by hand
+% Please edit documentation in R/loessGui.R
+\name{loessGui}
+\alias{loessGui}
+\title{Loess regression GUI}
+\usage{
+loessGui(x, y, data, er = 0.05)
+}
+\arguments{
+\item{x,y}{independent and dependent (numeric) regression variables.}
+
+\item{data}{an optional \code{data.frame}.}
+
+\item{er}{stands for extend range. It is used to extend the plotting
+range by a fraction on both sides and directions. Default is
+0.05. See \link[grDevices]{extendrange}.}
+}
+\value{
+None is returned by the function, only a GUI is opened.
+}
+\description{
+This function opens an interface to control the settings
+of a loess regression:
+\itemize{
+    \item degree choose the local polynomial degree with a radio
+selector;
+    \item span set the span value that controls the degree of
+smoothing;
+    \item center move the x value to be predicted;
+}
+
+The elements of the interface change a plot that shows the observed
+values and the corresponding fitted curve superimposed with
+confidence bands (for the fitted values). It assumes that
+\code{gWidgets} and \code{gWidgetstcltk} packages are available.
+}
+\examples{
+\donttest{
+
+library(gWidgets)
+library(gWidgetstcltk)
+
+loessGui(x=area, y=peri, data=rock, er=0.3)
+loessGui(x=speed, y=dist, data=cars, er=0.3)
+loessGui(x=eruptions, y=waiting, data=faithful, er=0.3)
+
+}
+}
+\author{
+Walmes Zeviani, \email{walmes@ufpr.br}
+}
+