scatterplotMatrix in R: explanation of options -

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quick question scatterplotmatrix "car" package. pulling data excel r analysis, i'm unsure of lines being plotted , "car" package info on cran isn't specific. have code below:

clipboard <- read.table("clipboard",sep="\t",header=t)  view(clipboard)  x1  x2  x3  x4 3   1   5   3 1   1   5   4 2   1   6   1 3   2   5   2 1   1   5   4 2   1   6   5 3   2   6   4 2   2   5   3 3   2   6   2 1   1   5   5 3   2   3   3 2   2   5   4 3   2   3   3 2   2   5   3 3   1   6   5  scatterplotmatrix(~x1+x2+x3+x4,clipboard)

thick red line regression curve, dotted lines? defined confidence interval bound? know diagonals kernel densities, green line? green line particular smoothing function?

image in question

  • the green line (straight) robust-regression line each pair.
  • the thick red line (curvy) non-parametric regression smoother (default gam, change it)
  • the dotted red lines represent confidence envelope smoother (more specific description in spread section of file)

your question made me wonder if color scheme same me though, hence curvy/straight qualifiers.


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