s.traject function

Trajectory Plot

performs the scatter diagram with trajectories.

s.traject(dfxy, fac = factor(rep(1, nrow(dfxy))), 
    ord = (1:length(fac)),  xax = 1, yax = 2, label = levels(fac), 
    clabel = 1, cpoint = 1, pch = 20, xlim = NULL, ylim = NULL, 
    grid = TRUE, addaxes = TRUE, edge = 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
• fac: a factor partioning the rows of the data frame in classes
• ord: a vector of length equal to fac. The trajectory is drawn in an ascending order of the ord values
• xax: the column number for the x-axis
• yax: the column number for the y-axis
• 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
• 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
• edge: if TRUE the arrows are plotted, otherwhise only the segments
• 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: aan 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

Returns

The matched call.

Author(s)

Daniel Chessel

Examples

if(!adegraphicsLoaded()) {
  rw <- function(a) {
    x <- 0
    for(i in 1:49) x <- c(x, x[length(x)] + runif(1, -1, 1))
    x
  }
  y <- unlist(lapply(1:5, rw))
  x <- unlist(lapply(1:5, rw))
  z <- gl(5, 50)
  s.traject(data.frame(x, y), z, edge = FALSE)
}