[R] A question on type="h" plot lines

Jim Lemon jim at bitwrit.com.au
Mon May 25 10:50:11 CEST 2009

Martin Ivanov wrote:
> Dear R users,
> I need a produce a plot with a single panel and a few lines on it. Each line represents a different data set. The line types must be "h", i.e. ‘histogram’ like (or ‘high-density’) vertical lines. The problem is that the vertical lines comprising a plot line of type="h" are drawn from the y=0 line to the (x, y) locations. What I need is vertical lines drawn from the line y="value that I specify" to the (x, y) locations. Is there a way for me to achieve that?
Hi Martin,
If you want a constant "value that you specify", you can just use the 
"clip" function:

clip(xylim[1],xylim[2],"value that I specify",xylim[4])

If you want different "values that you specify", I defer to the other Jim.


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