Nothing
`main.panel.cm` <-
function(x, y, tol = 0.05, cex = 1)
{
# panel for upper off diagonal panels
grid.points(x, y, pch = 16, gp=gpar(col=grey(0.35), cex=0.2*cex))
# fit a linear model to the data
lm1 <- lm(y ~ x)
x1 <- 0:20/20
fit <- suppressWarnings(predict.lm(lm1, newdata=data.frame(x=x1), se.fit=TRUE))
y1 <- fit$fit
yu <- y1 + 2*fit$se
yl <- y1 - 2*fit$se
sig <- identical(anova(lm1)$"Pr(>F)"[1] < tol, TRUE)
if (sig) {
line.f <- list(lwd=3*cex, lty=1, col="#000000")
line.ci <- list(lwd=2*cex, lty=1, col="red4")
} else {
line.f <- list(lwd=cex, lty=1, col="#0000FF")
line.ci <- list(lwd=cex, lty=2, col="#0000FF")
}
grid.lines(x1, y1, gp = gpar(lwd=line.f$lwd, lty=line.f$lty, col=line.f$col))
grid.lines(x1, yu, gp = gpar(lwd=line.ci$lwd, lty=line.ci$lty, col=line.ci$col))
grid.lines(x1, yl, gp = gpar(lwd=line.ci$lwd, lty=line.ci$lty, col=line.ci$col))
}
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