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Representation of a value in a graph

s.value.Rd

performs the scatter diagram with the representation of a value for a variable

Usage

s.value(dfxy, z, xax = 1, yax = 2, method = c("squaresize", "greylevel"), 
    zmax=NULL, csize = 1, cpoint = 0, pch = 20, clegend = 0.75, neig = NULL, 
    cneig = 1, xlim = NULL, ylim = NULL, grid = TRUE, addaxes = TRUE, 
    cgrid = 0.75, include.origin = TRUE, origin = c(0,0), sub = "", 
    csub = 1, possub = "topleft", pixmap = NULL, contour = NULL, 
    area = NULL, add.plot = FALSE)

Arguments

dfxy

a data frame with two coordinates

z

a vector of the values corresponding to the rows of dfxy

xax

column for the x axis

yax

column for the y axis

method

a string of characters
"squaresize" gives black squares for positive values and white for negative values with a proportional area equal to the absolute value.
"greylevel" gives squares of equal size with a grey level proportional to the value. By default the first choice

zmax

a numeric value, equal by default to max(abs(z)), can be used to impose a common scale of the size of the squares to several drawings in the same device

csize

a size coefficient for symbols

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

clegend

a character size for the legend used by par("cex")*clegend

neig

a neighbouring graph

cneig

a size for the neighbouring graph lines used with par("lwd")*cneig

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

cgrid

a character size, parameter used with par("cex")*cgrid to indicate the mesh of the grid

include.origin

a logical value indicating whether the point "origin" should be belonged to the graph space

origin

the fixed point in the graph space, for example c(0,0) the origin axes

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")

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

Daniel Chessel

Examples

if(!adegraphicsLoaded()) {
  xy <- cbind.data.frame(x = runif(500), y = runif(500))
  z <- rnorm(500)
  s.value(xy, z)
  
  s.value(xy, z, method = "greylevel")
  
  data(rpjdl)
  fau.coa <- dudi.coa(rpjdl$fau, scan = FALSE, nf = 3)
  s.value(fau.coa$li, fau.coa$li[,3], csi = 0.75, cleg = 0.75)
  
  data(irishdata)
  par(mfrow = c(3, 4))
  irq0 <- data.frame(scale(irishdata$tab, scale = TRUE))
  for (i in 1:12) {
    z <- irq0[, i]
    nam <- names(irq0)[i]
    s.value(irishdata$xy, z, area = irishdata$area, csi = 3,
      csub = 2, sub = nam, cleg = 1.5, cgrid = 0, inc = FALSE,
      xlim = c(16, 205), ylim = c(-50, 268), adda = FALSE, grid = FALSE)
  }
}