We see in the lower left part of the display matrix the
of each variable against any other variable of.
The upper right part
will contain the same plots for xn.
The diagonal will contain 1-dimensional
plots of x. If you want to plot more than 10 variables
you may choose a subset of variables since otherwise
you will not see much.option[1,1] allows some transformation on x:
grc.prep.inter -1 interactive selection
grc.prep.none 0 no transformation (default)
grc.prep.standard 1 standardize
grc.prep.zeroone 2 to [0,1]
grc.prep.pcacov 3 pca on cov matrix
grc.prep.pcacorr 4 pca on corr matrix
grc.prep.sphere 5 sphering
option[2,1] decides about the plot on the diagonal:
grc.prep.inter -1 interactive selection
grc.splom.none 0 empty
grc.splom.boxplotx 1 boxplot x
grc.splom.boxploty 2 boxplot y (default)
grc.splom.dotplotx 3 dotplot x
grc.splom.dotplotx 4 dotplot y
grc.splom.qqnplot 5 qqplot with normal distribution