piper.diagram {plotrix}R Documentation

Display a Piper diagram.

Description

Displays a Piper diagram.

Usage

 piper.diagram(ca,mg,so4,cl,ions=data.frame(ca=ca,mg=mg,so4=so4,cl=cl),
  sites=1:NROW(ions),new=FALSE,ppm=TRUE,chull=FALSE,tcsep=0.2,pch=3,
  main="",cex.lab=0.7,cex.tck=0.6,cex.pch=1,grid=TRUE,col=NA,ticklength=0.03,
  lwd.frame=1,pch.lwd=0.7,lwd.grid=lwd.frame,col.box="black",col.tck=col.box,
  col.grid="grey")

Arguments

ca,mg,so4,cl Concentrations of the ions.
ions data frame containing the above values.
sites Indices for the ions.
new Whether this is a new diagram.
ppm Whether the concentrations are in milligrams/liter (parts per million) or milliequivalents.
chull Whether to use the chull function.
tcsep Spacing for tick mark labels.
pch Symbol to use for ion values.
main Title for the diagram.
cex.lab Expansion for the label text.
cex.tck Expansion for the tick text.
cex.pch Expansion for the point text.
grid Whether to display a grid.
col Colors for the points.
ticklength Length for the ticks.
lwd.frame Line width for the frame.
pch.lwd Line width for the symbols.
lwd.grid Line width for the grid.
col.box Color for the box.
col.tck Color for the ticks.
col.grid Color for the grid.

Value

The return value from piper.points.

Author(s)

Mike Cheetham


[Package plotrix version 2.5-5 Index]