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addgridlines
2011 May 23
1
panel.first problem when plotting with formula
...'s not working with I plot using the formula.
I have some theories on what's happening, but even if my theory is right, I
don't know how to fix it.
Someone have a straightforward silver bullet?
Thank you,
Gene
bgfun = function(color='honeydew2',linecolor='grey45', addgridlines=TRUE){
tmp=par("usr")
rect(tmp[1], tmp[3], tmp[2], tmp[4], col=color)
if(addgridlines){
ylimits=par()$usr[c(3,4)]
abline(h=pretty(ylimits,10), lty=2, col=linecolor)
}
}
dat = data.frame(x=1:10,y=1:10)
## Works
plot(dat$x, dat$y, panel.first=bgfun())
##...