polys: Connect the Values with a Polygon

In StatDA: Statistical Analysis for Environmental Data

Connect the Values with a Polygon

Description

Connect the values for the elements with a polygon. Every "point" has his own shape and this demonstrates the characteristic of the point.

Usage

polys(x, scale = TRUE, labels = dimnames(x)[[1]], locations = NULL, 
nrow = NULL, ncol = NULL, key.loc = NULL, key.labels = dimnames(x)[[2]], 
key.xpd = TRUE, xlim = NULL, ylim = NULL, flip.labels = NULL, factx = 1, 
facty = 1, col.stars = NA, axes = FALSE, frame.plot = axes, main = NULL, 
sub = NULL, xlab = "", ylab = "", cex = 0.8, lwd = 1.1, lty = par("lty"), 
xpd = FALSE, 
mar = pmin(par("mar"), 1.1 + c(2 * axes + (xlab != ""), 2 * axes + 
      (ylab != ""), 1, 0)), 
add = FALSE, plot = TRUE, ...)

Arguments

x	a matrix or a data frame
scale	if TRUE, the data will be scaled
labels	the labels for the polygons inside the map
locations	the locations for the polygons inside the map
nrow,ncol	integers giving the number of rows and columns to use when locations=NULL. By default, 'nrow==ncol', a square layout will be used.
key.loc	the location for the legend
key.labels	the labels in the legend
key.xpd	A logical value or NA. If FALSE, all plotting is clipped to the plot region, if TRUE, all plotting is clipped to the figure region, and if NA, all plotting is clipped to the device region.
flip.labels	logical indicating if the label locations should flip up and down from diagram to diagram.
factx	additive factor for the x-coordinate
facty	magnification for the influence of the x-coordinate on the y-coordinate
main, sub, xlab, ylab, xlim, ylim, col.stars,cex, lwd, lty, xpd, mar	graphical parameters and labels for the plot
axes	if FALSE, no axes will be drawn
frame.plot	if TRUE, a box will be made around the plot
add	if TRUE, it will be added to the plot
plot	nothing is plotted
...	further graphical parameters

Details

Each polygon represents one row of the input x. For the variables the values are computed and then those values are connected with a polygon. The location of the polygons can be defined by the user.

Value

No return value, creates a plot.

Author(s)

Peter Filzmoser <[e-mail]> http://cstat.tuwien.ac.at/filz/

References

C. Reimann, P. Filzmoser, R.G. Garrett, and R. Dutter: Statistical Data Analysis Explained. Applied Environmental Statistics with R. John Wiley and Sons, Chichester, 2008.

Examples

data(ohorizon)
X=ohorizon[,"XCOO"]
Y=ohorizon[,"YCOO"]
el=log10(ohorizon[,c("Cu","Ni","Na","Sr")])
sel <- c(3,8,22, 29, 32, 35, 43, 69, 73 ,93,109,129,130,134,168,181,183,205,211,
      218,237,242,276,292,297,298,345,346,352,372,373,386,408,419,427,441,446,490,
      516,535,551,556,558,564,577,584,601,612,617)
x=el[sel,]
plot(X,Y,frame.plot=FALSE,xaxt="n",yaxt="n",xlab="",ylab="",type="n",
   xlim=c(360000,max(X)))
polys(x,ncol=8,key.loc=c(15,1),factx=0.30,facty=2.0,cex=0.75,lwd=1.1)

StatDA documentation built on June 7, 2023, 6:26 p.m.