plotH: Scatterplot with histogram-like bars.

In plotrix: Various Plotting Functions

Scatterplot with histogram-like bars.

Description

Scatterplot with histogram-like bars; a modification of ‘⁠plot(...,type="h")⁠’.

Usage

 plotH(x,...)

 ## S3 method for class 'formula'
plotH(x,data=NULL,xlab=names(mf)[2],ylab=names(mf)[1],...)

 ## Default S3 method:
plotH(x,y,xlab=paste(deparse(substitute(x))),
  ylab=paste(deparse(substitute(y))),width=0.6,ylim=NULL,col="gray",...)

Arguments

x	Vector of x-coordinates or a formula of the form y~x (see below for y).
y	Vector of y-coordinates.
xlab	A string for labeling the x-axis.
ylab	A string for labeling the y-axis.
data	The data frame from which the formula should be evaluated.
width	A numeric that indicates the width of the bars.
ylim	A vector of length two that indicates the limits over which to plot the y-axis. See details.
col	A string that indicates the fill color for the bars.
...	Additional arguments sent to the ‘⁠plot⁠’ or ‘⁠barplot⁠’ functions.

Details

‘⁠plotH⁠’ is meant to be a modification of the type="h" version of ‘⁠plot⁠’ such that the "bars" appears as actual rectangles rather than vertical lines. It defaults so that the lower bound of the y-axis is 0; change to ‘⁠ylim=NULL⁠’ to over-ride this default (and return to the default used in ‘⁠plot⁠’.

A pass-through to ‘⁠barplot⁠’ is used if the ‘⁠x⁠’ (or "RHS") variable is categorical.

Value

None, but a plot is produced.

Note

This function is currently experimental.

Author(s)

Derek Ogle

See Also

plot, barplot

Examples

  d<-data.frame(x=c(1,5,10:20),y=runif(13)+1,
                yn1=runif(13)-0.5,yn2=runif(13)-2,
                g=factor(sample(c("A","B","C"),13,replace=TRUE)))
  # new plotH function with formula notation
  plotH(y~x,data=d)
  # old plot() function with formula notation -- for comparison's purpose
  plot(y~x,data=d,type="h")
  # new function over-riding default ylim, increasing bar width,
  # and changing bar color
  plotH(y~x,data=d,ylim=range(d$y),width=0.9,col="red")
  # handling some negative values
  plotH(yn1~x,data=d) # not so good, because of default ylim
  plotH(yn1~x,data=d,ylim=c(0,max(d$yn1)))  # old look
  # handling all negative values
  plotH(yn2~x,data=d)
  plotH(yn2~x,data=d,ylim=range(d$yn2))  # old look
  # example of pass-through to barplot
  smry<-by(d$y,d$g,mean)
  plotH(levels(d$g),smry,ylab="Mean of Random Variable",xlab="Group")
  # example of non-formula usage
  x1 <- d$x
  y1 <- d$y
  plotH(x1,y1,col="blue")

plotrix documentation built on Nov. 10, 2023, 5:07 p.m.