compositions (version 0.9-11)

isoPortionLines: Isoportion- and Isoproportion-lines

Description

Add lines of equal portion and proportion to ternary diagrams.

Usage

isoPortionLines(...)
isoPortionLines.acomp(by=0.2,at=seq(0,1,by=by),...,parts=1:3,total=1,labs=TRUE,lines=TRUE,unit="")
isoPortionLines.rcomp(by=0.2,at=seq(0,1,by=by),...,parts=1:3,total=1,labs=TRUE,lines=TRUE,unit="")
isoProportionLines(...)
isoProportionLines.acomp(by=0.2,at=seq(0,1,by=by),...,parts=1:3,labs=TRUE,lines=TRUE) 
isoProportionLines.rcomp(by=0.2,at=seq(0,1,by=by),...,parts=1:3,labs=TRUE,lines=TRUE)

Arguments

...

graphical arguments

at

numeric in [0,1]: Which portions/proportions should be marked?

by

numeric in (0,1]:Steps between protions/proportions

parts

numeric vector subset of {1,2,3}: the variables to be marked

total

The total amount to be used in labeling

labs

logical: plot the labels?

lines

logical: plot the lines?

unit

marking the units e.g. "%"

Details

Isoportion lines give lines of the same portion of one of the parts, while isoproportion line gives lines of the same ratio between two parts. The isoproportion lines are Aitchison-lines in the simplex, while the isoportion-lines are, up to my knowledge, not.

See Also

plot.acomp

Examples

data(SimulatedAmounts)
plot(acomp(sa.lognormals))
isoPortionLines()
plot(acomp(sa.lognormals),center=TRUE)
isoPortionLines()
plot(rcomp(sa.lognormals))
isoPortionLines()
plot(acomp(sa.lognormals))
isoProportionLines()
plot(acomp(sa.lognormals),center=TRUE)
isoProportionLines()
plot(rcomp(sa.lognormals))
isoProportionLines()