show.soil.texture {plotrix}R Documentation

show.soil.texture

Description

show.soil.texture displays points on the soil triangle plotted by soil.texture as symbols.

Usage

 show.soil.texture(soiltexture,pch=NULL,col.symbols=NULL,bg.symbols=NA,
  show.legend=FALSE)

Arguments

soiltexture Matrix of soil textures where each row is a soil sample and three columns contain the proportions of the components sand, silt and clay in the range 0 to 1 or the percentages in the range 0 to 100.
pch Symbols to use for plotting the observations.
col.symbols Colors to use for plotting the observations.
bg.symbols Fill colors for symbols.
show.legend Logical - whether to show a legend. If there are more than about six soil textures, it is probably better to add a legend separately.

Value

A list of the x,y positions of the soil types plotted.

Author(s)

Sander Oom and Jim Lemon

See Also

get.soil.texture, \code{soil.texture}

Examples

 data(soils)
 # first just show the soil triangle
 soil.texture(main="Soil Texture Triangle")
 # now plot the observations
 show.soil.texture(soils,pch=2,col.symbols=2)

[Package plotrix version 1.3-5 Index]