plotrix (version 3.8-2)

get.soil.texture: Enter soil texture data

Description

get.soil.texture calls get.triprop to allow the user to enter soil textures as the proportions or percentages of three components, sand, silt and clay.

Usage

get.soil.texture(use.percentages=FALSE,cnames=c("sand","silt","clay"))

Value

A matrix of the components of one or more soil samples.

Arguments

use.percentages

Logical - whether to treat the entries as percentages and scale to proportions.

cnames

column names for the resulting three column matrix.

Author

Sander Oom and Jim Lemon

See Also

soil.texture,get.triprop

Examples

 if(dev.interactive()) {
  newsp<-get.soil.texture()
  # show the soil triangle
  soil.texture()
  # now plot the observations
  show.soil.texture(newsp)
 }