Superpose two graphics

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Description

This function superposes two graphics and extends the graphical constraints of a first graphic to a second one.

Usage

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superpose(g1, g2, which, plot = FALSE)
## S4 method for signature 'ADEg'
e1 + e2

Arguments

g1

an object of class ADEg, ADEgS or trellis

g2

an object of class ADEg, ADEgS or trellis superposed on g1

e1

an object of class ADEg or ADEgS

e2

an object of class ADEg or ADEgS superposed on e1

which

if g1 is an ADEgS, which ADEg is used as the base of superposition (g2 is superposed on g1[[which]])

plot

a logical indicating if the graphics is displayed

Details

The created ADEgS object is a layout of two graphical objects. Each of the two objects superposed still have its graphical parameters in the created layout. However, the ADEgS displayed favour the graphical parameters of the object below : displayed limits, grid, legend and axes are those of g1 (respectively e1) and g2 (respectively e2) has transparent background and labels' boxes.

The superpose method is defined for:

  • signature(g1 = "ADEgS", g2 = "ADEg", which = "numeric", plot = "logical")

  • signature(g1 = "ADEgS", g2 = "ADEg", which = "numeric", plot = "ANY")

  • signature(g1 = "ADEgS", g2 = "ADEg", which = "missing", plot = "ANY"): If which is missing, the last ADEg of g1@ADEglist is used as the base of superposition. In that case, which = length(g1)

  • signature(g1 = "ADEgORtrellis", g2 = "ADEgORtrellis", which = "ANY", plot = "ANY"): If g1 is an ADEg object, no which is needed.

  • signature(g1 = "ADEgS", g2 = "ADEgS", which = "missing", plot = "ANY")

The + method is defined for:

  • signature(e1 = "ADEg", e2 = "ADEg"): superpose e2 on e1

  • signature(e1 = "ADEg", e2 = "ADEgS"): superpose e2 to e1

  • signature(e1 = "ADEgS", e2 = "ADEg"): calls the + method with signature (e1 = "ADEg", e2 = "ADEgS").

Value

An object of class "ADEgS".

Author(s)

Alice Julien-Laferriere, Aurelie Siberchicot aurelie.siberchicot@univ-lyon1.fr and Stephane Dray

See Also

add.ADEg ADEgS ADEg

Examples

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cha <- LETTERS[1:20]
xy <- cbind.data.frame(runif(length(cha)), runif(length(cha)))
g1 <- s.label(xy, labels = cha, ppoints.alpha = 0, pbackground.col = "grey85")
g2 <- s.label(xy, labels = cha, plabels.cex = 0, paxes.draw = TRUE, ppoints.pch = 4, 
  ppoints.col = "red")
g3 <- superpose(g1, g2, plot = TRUE)
g4 <- superpose(g2, g1, plot = TRUE)

data(jv73, package = "ade4")
pca1 <- ade4::dudi.pca(jv73$morpho, scannf = FALSE)
g5 <- s.label(pca1$li, plabels.optim = TRUE)
g6 <- s.class(pca1$li, jv73$fac.riv, starSize = 0, ellipseSize = 0, chullSize = 1, 
  ppolygons.alpha = 0.4, col = rainbow(12), ppoints.cex = 0)
g5 + g6

## Not run: g7 <- s.label(pca1$li, plabels.optim = TRUE, facets = jv73$fac.riv, plot = FALSE)
g8 <- s.class(pca1$li, jv73$fac.riv, facets = jv73$fac.riv, starSize = 0, chullSize = 1, 
  ellipseSize = 0, ppolygons.alpha = 0.4, col = rainbow(12), ppoints.cex = 0, plot = FALSE)
g9 <- superpose(g7, g8, plot = TRUE)

## End(Not run)

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