Usage:
abline(a, b, untf = FALSE, ...)
abline(h=, untf = FALSE, ...)
abline(v=, untf = FALSE, ...)
abline(coef=, untf = FALSE, ...)
abline(reg=, untf = FALSE, ...)It looks to me like you want "abline(h=h)". hope this helps. spencer graves
Grace Conlon wrote:
if I want to specify y-coordinates for the heights of horizontal lines to go across a plot.
x <- c(1,2,3,6,4,8,4,7) y <- c(3,2,7,4,5,4,5,6) h <- c(3,5,7) plot(x,y) abline(y=h)
However I got error message:
Warning message: parameter "y" couldn't be set in high-level plot() function (I tried abline(h=y) , it;s not what I want also)
Do u know why?
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