s.class {ade4} | R Documentation

## Plot of factorial maps with representation of point classes

### Description

performs the scatter diagrams with representation of point classes.

### Usage

    s.class(dfxy, fac, wt = rep(1, length(fac)), xax = 1,
        yax = 2, cstar = 1, cellipse = 1.5, axesell = TRUE,
        label = levels(fac), clabel = 1, cpoint = 1, pch = 20,
        col = rep(1, length(levels(fac))), xlim = NULL, ylim = NULL,
        grid = TRUE, addaxes = TRUE, origin = c(0,0),
        include.origin = TRUE, sub = "", csub = 1, possub = "bottomleft",
        cgrid = 1, pixmap = NULL, contour = NULL, area = NULL, add.plot = FALSE)

### Arguments

`dfxy` | a data frame containing the two columns for the axes
`fac` | a factor partitioning the rows of the data frame in classes
`wt` | a vector of the point weightings of the data frame used for computing the means (star centers) and the ellipses of dispersion
`xax` | the column number of x in `dfxy`
`yax` | the column number of y in `dfxy`
`cstar` | a number between 0 and 1 which defines the length of the star size
`cellipse` | a positive coefficient for the inertia ellipse size
`axesell` | a logical value indicating whether the ellipse axes should be drawn
`label` | a vector of strings of characters for the point labels
`clabel` | if not NULL, a character size for the labels, used with `par("cex")*clabel`
`cpoint` | a character size for plotting the points, used with `par("cex")*cpoint`. If zero, no points are drawn
`pch` | if `cpoint` > 0, an integer specifying the symbol or the single character to be used in plotting points
`col` | a vector of colors used to draw each class in a different color
`xlim` | the ranges to be encompassed by the x, if NULL they are computed
`ylim` | the ranges to be encompassed by the y, if NULL they are computed
`grid` | a logical value indicating whether a grid in the background of the plot should be drawn
`addaxes` | a logical value indicating whether the axes should be plotted
`origin` | the fixed point in the graph space, for example c(0,0) the origin axes
`include.origin` | a logical value indicating whether the point "origin" should be belonged to the graph space
`sub` | a string of characters to be inserted as legend
`csub` | a character size for the legend, used with `par("cex")*csub`
`possub` | a string of characters indicating the sub-title position ("topleft", "topright", "bottomleft", "bottomright")
`cgrid` | a character size, parameter used with par("cex")* `cgrid` to indicate the mesh of the grid
`pixmap` | an object 'pixmap' displayed in the map background
`contour` | a data frame with 4 columns to plot the contour of the map : each row gives a line (x1,y1,x2,y2)
`area` | a data frame of class 'area' to plot a set of surface units in contour
`add.plot` | if TRUE uses the current graphics window

### Author(s)

Daniel Chessel chessel@biomserv.univ-lyon1.fr

### Examples

    xy <- cbind.data.frame(x = runif(200,-1,1), y = runif(200,-1,1))
    posi <- factor(xy$x > 0) : factor(xy$y > 0)
    coul <- c("black", "red", "green", "blue")
    par(mfrow = c(2,2))
    s.class(xy, posi, cpoi = 2)
    s.class(xy, posi, cell = 0, cstar = 0.5)
    s.class(xy, posi, cell = 2, axesell = FALSE, csta = 0, col = coul)
    s.chull(xy, posi, cpoi = 1)
    par(mfrow = c(1,1))

    ## Not run:
    data(banque)
    dudi1 <- dudi.acm(banque, scannf = FALSE)
    coul = rainbow(length(levels(banque[,20])))
    par(mfrow = c(2,2))
    s.label(dudi1$li, sub = "Factorial map from ACM", csub = 1.5,
        possub = "topleft")
    s.class(dudi1$li, banque[,20], sub = names(banque)[20],
        possub = "bottomright", cell = 0, cstar = 0.5, cgrid = 0, csub = 1.5)
    s.class(dudi1$li, banque[,20], csta = 0, cell = 2, cgrid = 0,
        clab = 1.5)
    s.class(dudi1$li, banque[,20], sub = names(banque)[20],
        possub = "topright", cgrid = 0, col = coul)
    par(mfrow = c(1,1))

    par(mfrow = n2mfrow(ncol(banque)))
    for (i in 1:(ncol(banque)))
        s.class(dudi1$li, banque[,i], clab = 1.5, sub = names(banque)[i],
        csub = 2, possub = "topleft", cgrid = 0, csta = 0, cpoi = 0)
    s.label(dudi1$li, clab = 0, sub = "Common background")
    par(mfrow = c(1,1))
    ## End(Not run)

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