SymbLegend {StatDA} | R Documentation

## Plot Legend

### Description

Plots symbols and Legend on a map. There are two different methods (percentile symbols or boxplot symbols) to display the legend.

### Usage

    SymbLegend(X, Y, z, type = "percentile", qutiles = c(0, 0.05, 0.25, 0.75, 0.95, 1),
    q = NULL, symbtype = "EDA", symbmagn = 0.8, leg.position = "topright",
    leg.title = "", leg.title.cex = 0.8, leg.round = 2, leg.wid = 4, leg.just = "right",
    cex.scale = 0.8, xf = 9000, logscale = TRUE, accentuate = FALSE)

### Arguments

`X` | X-coordinates
`Y` | Y-coordinates
`z` | values on the coordinates
`type` | "percentile" for percentile legend, "boxplot" for boxplot legend
`qutiles` | considered quantiles if type="percentile" is used
`q` | if not NULL, provide manually data points where to break
`symbtype` | type of symbols to be used; "EDA", "EDAacc", "EDAacc2", "EDAext", "GSC" or "arbit"
`symbmagn` | magnification factor for symbols
`leg.position` | position of the legend, either character like "topright" or coordinates
`leg.title` | title for legend
`leg.title.cex` | cex for legend
`leg.round` | round legend to specified digits "pretty"
`leg.wid` | width (space in numbers) for legend
`leg.just` | how to justify the legend
`cex.scale` | cex for text "log-scale" and for boxplot legend - only for type="boxplot"
`xf` | x-distance from boxplot to number for legend
`logscale` | if TRUE a log scale is used (for boxplot scale) and the log-boxplot is computed
`accentuate` | if TRUE, accentuated symbols are used (here only EDA accentuated!)

### Details

It is possible to choose between different methods for calculating the range of the values for the different symbols.

If type="percentile" the pre-determined quantiles of the data are computed and are used to plot the symbols. If type="boxplot" a boxplot is computed and the values were taken to group the values fot the plot and the legend. In the case that a log scale is used the function boxplotlog is used instead of boxplot.

### Author(s)

Peter Filzmoser <P.Filzmoser@tuwien.ac.at>

### References

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

### Examples

    data(chorizon)
    data(kola.background)
    el=chorizon[,"As"]
    X=chorizon[,"XCOO"]
    Y=chorizon[,"YCOO"]

    plot(X,Y,frame.plot=FALSE,xaxt="n",yaxt="n",xlab="",ylab="",type="n")
    plotbg(map.col=c("gray","gray","gray","gray"),add.plot=TRUE)

    SymbLegend(X,Y,el,type="percentile",qutiles<-c(0,0.05,0.25,0.75,0.95,1),symbtype="EDA",
    symbmagn=0.8,leg.position="topright",leg.title="As [mg/kg]",leg.title.cex=0.8,leg.round=2,
    leg.wid=4,leg.just="right")

[Package StatDA version 1.0 Index]