image.logratioVariogramAnisotropy {gmGeostats}

Plot variogram maps for anisotropic logratio variograms

Description

Image method to obtain variogram maps for anisotropic logratio variograms

Usage

## S3 method for class 'logratioVariogramAnisotropy'
image(
  x,
  jointColor = FALSE,
  breaks = NULL,
  probs = seq(0, 1, 0.1),
  col = spectralcolors,
  ...
)

Arguments

x

object of class c("logratioVariogramAnisotropy", "logratioVariogram")

jointColor

logical, should all variogram maps share the same color scale?

breaks

breaks to use in the color scale

probs

alternatively to explicit breaks, these probabilities allow to ask for some equally probable breaks

col

either a color palette, or else a vector of colors to use, of length length(breaks)-1

...

additional arguments for generic functionality (currently ignored)

Value

This function is called for its effect of producing a figure. Additionally, the graphical parameters active prior to calling this function are returned invisibly.

Examples

data("jura", package="gstat")
X = jura.pred[,1:2]
Zc = compositions::acomp(jura.pred[,7:9])
vg = logratioVariogram(data=Zc, loc=X, azimuth=c(0:18)*10, 
                           azimuth.tol=22.5)
image(vg)
image(vg, jointColor=TRUE)