time-series--project3/pairsplot.R at Developer · embeddDev/time-series--project3 · GitHub

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panel.cor.scale <- function(x, y, digits=2, prefix="", cex.cor)
{
  usr <- par("usr"); on.exit(par(usr))
  par(usr = c(0, 1, 0, 1))
  r = (cor(x, y,use="pairwise"))
  txt <- format(c(r, 0.123456789), digits=digits)[1]
  txt <- paste(prefix, txt, sep="")
  if(missing(cex.cor)) cex <- 0.8/strwidth(txt)
  text(0.5, 0.5, txt, cex = cex * abs(r))
}


panel.cor <- function(x, y, digits=2, prefix="", cex.cor)
{
  usr <- par("usr"); on.exit(par(usr))
  par(usr = c(0, 1, 0, 1))
  r = (cor(x, y,use="pairwise"))
  txt <- format(c(r, 0.123456789), digits=digits)[1]
  txt <- paste(prefix, txt, sep="")
  if(missing(cex.cor)) cex <- 0.8/strwidth(txt)
  text(0.5, 0.5, txt, cex = cex )
}


panel.hist <- function(x, ...)
{
  usr <- par("usr"); on.exit(par(usr))
  par(usr = c(usr[1:2], 0, 1.5) )
  h <- hist(x, plot = FALSE)
  breaks <- h$breaks; nB <- length(breaks)
  y <- h$counts; y <- y/max(y)
  rect(breaks[-nB], 0, breaks[-1], y, col="cyan", ...)
}


pairs.panels <- function (x,y,smooth=TRUE,scale=FALSE)
{if (smooth ){
  if (scale) {
    pairs(x,diag.panel=panel.hist,upper.panel=panel.cor.scale,lower.panel=panel.smooth)
  }
  else {pairs(x,diag.panel=panel.hist,upper.panel=panel.cor,lower.panel=panel.smooth)
  } #else {pairs(x,diag.panel=panel.hist,upper.panel=panel.cor,lower.panel=panel.smooth)
}
else #smooth is not true
{ if (scale) {pairs(x,diag.panel=panel.hist,upper.panel=panel.cor.scale)
} else {pairs(x,diag.panel=panel.hist,upper.panel=panel.cor) }
} #end of else (smooth)
} #end of function