Adds lines on graphics.

Adds a trellis object containing one or several lines on one or several graphical objects.

Usage

addline(object, a = NULL, b = 0, h = NULL, v = NULL, plot = TRUE, ...)

Arguments

object

an object of class ADEg or ADEgS

a, b

coefficients of the line to be added, passed to the panel.abline function of the lattice package

h, v

numeric vectors giving locations respectively of horizontal and vertical lines to be added to the plot, in native coordinates, passed to the panel.abline function of the lattice package

plot

a logical indicating if the graphics is displayed

...

Other arguments. Additional graphical parameters (see the plines list in adegpar and trellis.par.get). If object is an ADEgS, the argument which identify which ADEg is/are used for superposition.

Value

An object of class ADEgS.

Author

Aurelie Siberchicot aurelie.siberchicot@univ-lyon1.fr and Stephane Dray

See also

ADEg ADEgS panel.abline

Examples

# example extracted from the pedagogic file, here: http://pbil.univ-lyon1.fr/R/pdf/tdr65.pdf
data(monde84, package = "ade4")
dfX <- cbind.data.frame(lpib = log(monde84$pib), croipop = monde84$croipop)
dfY <- cbind.data.frame(lmorta = log(monde84$morta), lanal = log(monde84$anal + 1), 
  rscol = sqrt(100 - monde84$scol))
dfX0 <- ade4::scalewt(dfX)
dfY0 <- ade4::scalewt(dfY)
can1 <- cancor(dfX0, dfY0)
varcanoX <- dfX0 %*% can1$xcoef[,1]
varcanoY <- dfY0 %*% can1$ycoef[,1]
g1 <- s.label(cbind(varcanoY,varcanoX), labels = row.names(monde84), plabel.cex = 0.8, plot = FALSE)
addline(g1, 0, 1, plines.col = "red", plines.lwd = 0.5, plines.lty = 2)