R: Plot of a frequency distribution

s.distri {ade4} | R Documentation

## Plot of a frequency distribution

### Description

performs the scatter diagram of a frequency distribution.

### Usage

    s.distri(dfxy, dfdistri, xax = 1, yax = 2, cstar = 1,
        cellipse = 1.5, axesell = TRUE, label = names(dfdistri),
        clabel = 0, cpoint = 1, pch = 20, 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 two columns for the axes
`dfdistri` | a data frame containing the mass distributions in columns
`xax` | the column number for the x-axis
`yax` | the column number for the y-axis
`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 distribution centers 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
`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 segment (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

### Value

The matched call.

### Author(s)

Daniel Chessel

### Examples

    if(!adegraphicsLoaded()) {
      xy <- cbind.data.frame(x = runif(200, -1, 1), y = runif(200, -1, 1))
      distri <- data.frame(w1 = rpois(200, xy$x * (xy$x > 0)))
      s.value(xy, distri$w1, cpoi = 1)
      s.distri(xy, distri, add.p = TRUE)

      w1 <- as.numeric((xy$x> 0) & (xy$y > 0))
      w2 <- ((xy$x > 0) & (xy$y < 0)) * (1 - xy$y) * xy$x
      w3 <- ((xy$x < 0) & (xy$y > 0)) * (1 - xy$x) * xy$y
      w4 <- ((xy$x < 0) & (xy$y < 0)) * xy$y * xy$x

      distri <- data.frame(a = w1 / sum(w1), b = w2 / sum(w2),
        c = w3 / sum(w3), d = w4 / sum(w4))
      s.value(xy, unlist(apply(distri, 1, sum)), cleg = 0, csi = 0.75)
      s.distri(xy, distri, clab = 2, add.p = TRUE)

      data(rpjdl)
      xy <- dudi.coa(rpjdl$fau, scan = FALSE)$li
      par(mfrow = c(3, 4))
      for (i in c(1, 5, 8, 20, 21, 23, 26, 33, 36, 44, 47, 49)) {
        s.distri(xy, rpjdl$fau[, i], cell = 1.5, sub = rpjdl$frlab[i],
          csub = 2, cgrid = 1.5)}
      par(mfrow = c(1, 1))
    }

[Package ade4 version 1.7-18 Index]