r-gregmisc-users Mailing List for R gregmisc package (Page 6)

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Revision: 1904
          http://sourceforge.net/p/r-gregmisc/code/1904
Author:   warnes
Date:     2014-12-02 01:38:01 +0000 (Tue, 02 Dec 2014)
Log Message:
-----------
Man page fixes.

Modified Paths:
--------------
    trunk/gplots/man/bandplot.Rd

Modified: trunk/gplots/man/bandplot.Rd
===================================================================

--- trunk/gplots/man/bandplot.Rd	2014-12-02 01:12:45 UTC (rev 1903)
+++ trunk/gplots/man/bandplot.Rd	2014-12-02 01:38:01 UTC (rev 1904)
@@ -8,14 +8,14 @@
 }
 \usage{
 bandplot(x,...)
-\method{bandplot}{formula}(x, data=parent.frame(), subset, na.action, ...,
+\method{bandplot}{formula}(x, data, subset, na.action, ...,
            xlab=NULL, ylab=NULL, add = FALSE, sd = c(-2:2),
            sd.col=c("magenta", "blue", "red", "blue", "magenta"),
-           sd.lwd=c(2, 2, 3, 2, 2),  sd.lty=c(2, 1, 1, 1, 2), 
+           sd.lwd=c(2, 2, 3, 2, 2),  sd.lty=c(2, 1, 1, 1, 2),
            method = "frac", width = 1/5, n=50)
 \method{bandplot}{default}(x, y, ..., add = FALSE, sd = c(-2:2),
            sd.col=c("magenta", "blue", "red", "blue", "magenta"),
-           sd.lwd=c(2, 2, 3, 2, 2),  sd.lty=c(2, 1, 1, 1, 2), 
+           sd.lwd=c(2, 2, 3, 2, 2),  sd.lty=c(2, 1, 1, 1, 2),
            method = "frac", width = 1/5, n=50)
 }
 \arguments{
@@ -23,11 +23,19 @@
     an single independent variable (x) to use as coordinates in the
     scatter plot  or a numeric vector of x locations}
   \item{y}{numeric vector of y locations}
-  \item{data}{a data.frame (or list) from which the variables in `formula'
-          should be taken.}
-  \item{subset}{ an optional vector specifying a subset of observations to be
-          used in the fitting process. }
-  \item{\dots}{Additional plotting parameters. }
+  \item{data}{an optional data.frame, list, or environment contianing
+    the variables used in the model (and in \code{subset}).  If not found in
+    data, the variables are taken from environment(formula),
+    typically the environment from which lm is called.}
+  \item{subset}{an optional vector specifying a subset of observations to be
+    used in the fitting process.}
+  \item{na.action}{a function which indicates what should happen when
+    the data contain NAs.  The default is set by the na.action
+    setting of options, and is na.fail if that is unset.  The
+    factory-fresh default is na.omit.  Another possible value is
+    NULL, no action.  Value na.exclude can be useful.  }
+  \item{\dots}{Additional plotting parameters}
+  \item{xlab, ylab}{x and y axis labels}
   \item{add}{ Boolean indicating whether the local mean and standard
     deviation lines should be added to an existing plot.  Defaults to
     FALSE.}
@@ -39,15 +47,13 @@
     help page for \code{\link{wapply}} for details.}
 }
 \details{
-
   \code{bandplot} was created to look for changes in the mean or
   variance of scatter plots, particularly plots of regression residuals.
-  
+
   The local mean and standard deviation are calculated by calling
   'wapply'.  By default, bandplot asks wapply to smooth using intervals
   that include the nearest 1/5 of the data.  See the documentation of
   that function for details on the algorithm.
-  
 }
 \value{
   Invisibly returns a list containing the x,y points plotted for each line.
@@ -61,6 +67,7 @@
 x <- 1:1000
 y <- rnorm(1000, mean=1, sd=1 + x/1000 )
 bandplot(x,y)
+bandplot(y~x)
 
 # fixed varance, changing mean
 x <- 1:1000
@@ -79,10 +86,11 @@
 # regression picks up the mean trend, but not the change in variance
 reg <- lm(y~x)
 summary(reg)
+abline(reg=reg, col="blue", lwd=2)
 
 # using bandplot on the original data helps to show the mean and
 # variance trend
-bandplot(x,y)
+bandplot(y ~ x)
 
 # using bandplot on the residuals helps to see that regression removes
 # the mean trend but leaves the trend in variability

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r-gregmisc-users Mailing List for R gregmisc package (Page 6)

r-gregmisc-users — Discussion list for R gregmisc packages (gplot, gmodels, gdata, gtools)