s.arrow: 2-D scatter plot with arrows

In sdray/adegraphics: An S4 Lattice-Based Package for the Representation of Multivariate Data

2-D scatter plot with arrows

Description

This function represents a two dimensional scatter plot with arrows linking points to the origin.

Usage

s.arrow(dfxy, xax = 1, yax = 2, labels = row.names(as.data.frame(dfxy)), 
  facets = NULL, plot = TRUE, storeData = TRUE, add = FALSE, pos = -1, ...)

Arguments

dfxy	a data frame used to produce the plot
xax	an integer (or a vector) indicating which column(s) of dfxy is(are) plotted on the x-axis
yax	an integer (or a vector) indicating which column(s) of dfxy is(are) plotted on the y-axis
labels	a character vector containing labels for arrows
facets	a factor splitting the rows of dfxy so that subsets of the data are represented on different sub-graphics
plot	a logical indicating if the graphics is displayed
storeData	a logical indicating if the data are stored in the returned object. If FALSE, only the names of the data arguments are stored
add	a logical. If TRUE, the graphic is superposed to the graphics already plotted in the current device
pos	an integer indicating the position of the environment where the data are stored, relative to the environment where the function is called. Useful only if storeData is FALSE
...	additional graphical parameters (see adegpar and trellis.par.get)

Details

An other origin for arrows can be specified using an adegpar parameters: porigin. Graphical parameters for points and arrows are available in parrows and ppoints of adegpar.

Value

An object of class ADEg (subclass S2.arrow) or ADEgS (if add is TRUE and/or if facets or vectors for xax/yax are used).
The result is displayed if plot is TRUE.

Author(s)

Alice Julien-Laferriere, Aurelie Siberchicot [e-mail] and Stephane Dray

See Also

S2.arrow ADEg.S2

Examples

data(doubs, package = "ade4") 
dudi1 <- ade4::dudi.pca(doubs$env, scale = TRUE, scannf = FALSE, nf = 3)
dudi2 <- ade4::dudi.pca(doubs$fish, scale = TRUE, scannf = FALSE, nf = 2)
coin1 <- ade4::coinertia(dudi1, dudi2, scannf = FALSE, nf = 2)
g11 <- s.arrow(coin1$l1, plabels.cex = 0.87, plot = FALSE)
g12 <- s.arrow(coin1$c1, plabels.cex = 1, plabels.col = "red", plot = FALSE)
g1 <- superpose(g12, g11, plot = TRUE)

xy <- cbind(rnorm(50), rnorm(50))
g2 <- s.arrow(xy, plabels.cex = 0.9, plines = list(lwd = 1.5), parrows.angle = 20)
update(g2, plines = list(col = rainbow(5)))

sdray/adegraphics documentation built on July 26, 2024, 1:25 a.m.