gmGeostats (version 0.11.3)

pairsmap: Multiple maps Matrix of maps showing different combinations of components of a composition, user defined

Description

Multiple maps Matrix of maps showing different combinations of components of a composition, user defined

Usage

pairsmap(data, ...)
# S3 method for SpatialPointsDataFrame
pairsmap(data, ...)
# S3 method for default
pairsmap(
  data,
  loc,
  colscale = rev(rainbow(10, start = 0, end = 4/6)),
  cexrange = c(0.1, 2),
  scale = rank,
  commonscale = FALSE,
  mfrow = c(floor(sqrt(ncol(data))), ceiling(ncol(data)/floor(sqrt(ncol(data))))),
  foregroundcolor = "black",
  closeplot = TRUE,
  ...
)

Value

The function is primarily called for producing a matrix of plots of each component of a multivariate data set, such as a compositional data set. Each plot represents a map whose symbols are colored and sized according to a z-scale controlled by one of the variables of the data set. It can be used virtually with any geometry, any kind of data (compositional, positive, raw, etc). This function returns invisibly the graphical parameters that were active prior to calling this function. This allows the user to add further stuff to the plots (mostly, using par(mfg=c(i,j))

to plot on the diagram (i,j)), or else freeze the plot (by wrapping the call to pwlrmap

on a call to par).

Arguments

data

data to represent; admits many data containing objects (matrix, data.frame, classes from package compositions) as well as their Spatial counterparts (in which case, loc is not necessary)

...

extra arguments for generic functionality

loc

matrix or data.frame of coordinates of the sample locations

colscale

set of colors to be used as colorscale (defauls to 10 colors between blue and red)

cexrange

symbol size min and max values (default to 0.1 to 2)

scale

function scaling the set of z-values of each map, defaults to rank

commonscale

logical, should all plots share a common z-scale? defaults to FALSE

mfrow

vector of two integers, giving the number of plots per row and per column of the matrix of plots to be created; defaults to something square-ish, somewhat wider than longer, and able to contain all plots

foregroundcolor

color to be used for the border of the symbol

closeplot

logical, should the plot be left open (FALSE) for further changes, or be frozen (TRUE)? defaults to TRUE

Methods (by class)

• SpatialPointsDataFrame: Multiple maps

• default: Multiple maps

Examples

data("Windarling")
library("compositions")
coords = as.matrix(Windarling[,c("Easting","Northing")])
compo = Windarling[,c("Fe","Al2O3","SiO2", "Mn", "P")]
compo$Rest = 100-rowSums(compo)
compo = acomp(compo)
pairsmap(data=clr(compo), loc=coords) # clr
pairsmap(data=compo, loc=coords) # closed data