s.corcircle function

Plot of the factorial maps of a correlation circle

performs the scatter diagram of a correlation circle.

s.corcircle(dfxy, xax = 1, yax = 2, label = row.names(df), 
    clabel = 1, grid = TRUE, sub = "", csub = 1, possub = "bottomleft", 
    cgrid = 0, fullcircle = TRUE, box = FALSE, add.plot = FALSE)

Arguments

• dfxy: a data frame with two coordinates
• 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
• grid: a logical value indicating whether a grid in the background of the plot should be drawn
• 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
• fullcircle: a logical value indicating whether the complete circle sould be drawn
• box: a logical value indcating whether a box should be drawn
• add.plot: if TRUE uses the current graphics window

Returns

The matched call.

Author(s)

Daniel Chessel

Examples

if(!adegraphicsLoaded()) {
  data (olympic)
  dudi1 <- dudi.pca(olympic$tab, scan = FALSE) # a normed PCA
  par(mfrow = c(2, 2))
  s.corcircle(dudi1$co, lab = names(olympic$tab))
  s.corcircle(dudi1$co, cgrid = 0, full = FALSE, clab = 0.8)
  s.corcircle(dudi1$co, lab = as.character(1:11), cgrid = 2, 
    full = FALSE, sub = "Correlation circle", csub = 2.5, 
    possub = "bottomleft", box = TRUE)
  s.arrow(dudi1$co, clab = 1)
  par(mfrow = c(1, 1))
}