numOSL (version 2.8)

psRadialPlot: Pseudo radial plot drawing

Description

Drawing a pseudo (simplified) radial plot.

Usage

psRadialPlot(EDdata, addsigma = 0, dose = NULL, 
             zmin = NULL, zmax = NULL, ntick = 6, 
             digits = 2, pcolor = "blue", psize = 1, 
             rg = 2, zlabel = "De (Gy)")

Value

Return a pseudo radial plot

Arguments

EDdata

matrix(required): a two-column matrix (i.e., equivalent dose values and
associated standard errors)

addsigma

numeric(with default): additional uncertainty

dose

vector(optional): dose population(s) to be drawn

zmin

numeric(with default): lower limit on z-axis

zmax

numeric(with default): upper limit on z-axis

ntick

integer(with default): desired number of ticks in z-axis

digits

integer(with default): number of decimal places or significant digits for values shown in z-axis

pcolor

character(with default): color of a data point, input colors() to see more available colors

psize

numeric(with default): size of a data point

rg

integer(with default): range of a dose population, 0=dose,
1=dose+/-sigma, 2=dose+/-2sigma

zlabel

character(with default): title for the z-axis

Details

Function psRadialPlot is used for drawing a simplified radial plot in which the z-axis is a straight line. The pseudo radial plot is easier to construct compared to the regular radial plot. This function can be adopted to display estimates that have different error estimates in any field of the analytical sciences. Note that the function handles datasets in log-scale, so any minus observation is not allowed.

References

Galbraith RF, 1988. Graphical display of estimates having differing standard errors. Technometrics, 30(3): 271-281.

Galbraith RF, 1994. Some applications of radial plots. Journal of the American Statistical Association, 89(428): 1232-1242.

Galbraith RF, 2010. On plotting OSL equivalent doses. Ancient TL, 28(1): 1-10.

Galbraith RF, Roberts RG, Laslett GM, Yoshida H, Olley JM, 1999. Optical dating of single grains of quartz from Jinmium rock shelter, northern Australia. Part I: experimental design and statistical models. Archaeometry, 41(2): 339-364.

See Also

dbED; RadialPlotter; EDdata

Examples

   data(EDdata)
   psRadialPlot(EDdata$al3, addsigma=0.10, 
                dose=c(39.14, 51.27, 79.14), digits=1,
                zmin=30, zmax=100, ntick=10, rg=1)