plotrix: get.triprop – R documentation

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get.triprop

Enter three proportion data - usually soil textures

Description

get.triprop allows the user to enter triplets of proportions or percentages of three components such as sand, silt and clay in soils.

Usage

get.triprop(use.percentages=FALSE,cnames=c("1st","2nd","3rd"))

Arguments

`use.percentages`	Logical - whether to treat the entries as percentages and scale to proportions.
`cnames`	column names for the resulting three column matrix.

Details

The three proportions of each row must sum to 100 or 1 within 1% or the function will warn the operator.

Value

A matrix of the components of one or more observations.

Author(s)

Jim Lemon

Examples

if(dev.interactive()) {
  # get some proportions
  newsp<-get.triprop()
  # show the triangle
  triax.frame(main="Test triax.plot")
  # now plot the observations
  triax.points(newsp)
 }

plotrix

Various Plotting Functions

v3.8-1

GPL (>= 2)

Authors

Jim Lemon, Ben Bolker, Sander Oom, Eduardo Klein, Barry Rowlingson, Hadley Wickham, Anupam Tyagi, Olivier Eterradossi, Gabor Grothendieck, Michael Toews, John Kane, Rolf Turner, Carl Witthoft, Julian Stander, Thomas Petzoldt, Remko Duursma, Elisa Biancotto, Ofir Levy, Christophe Dutang, Peter Solymos, Robby Engelmann, Michael Hecker, Felix Steinbeck, Hans Borchers, Henrik Singmann, Ted Toal, Derek Ogle, Darshan Baral, Ulrike Groemping, Bill Venables

Initial release

2021-01-21