Re: [R] plot(..., type="h") w/ origin not at y=0

From: John Fox (jfox@mcmail.cis.mcmaster.ca)
Date: Fri 28 Jun 2002 - 04:18:43 EST

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Message-id: <Pine.SOL.4.33.0206271416330.9372-100000@mcmail.cis.mcmaster.ca>

Dear Cyril,

You might try something like the following:

    vlines <- function(x, y, y.orig){
        plot(range(x), range(c(y, y.orig)), type='n',
            xlab=deparse(substitute(x)), ylab=deparse(substitute(y)))
        for (i in seq(along=x))lines(x[c(i,i)], c(y.orig, y[i]))
        }

    vlines(1:3, y=-(1:3), y.orig=-3)

Note that the third line in your example has zero length.

I hope that this helps,
 John

On Thu, 27 Jun 2002, Cyril Humbert wrote:

> Is it a way to make plots with vertical lines, like plot(x, y, type="h"),
> but starting from a different value than y=0.
>
> For example, with x=1:3, y=-(1:3), y.orig=-3 :
>
> -1 |
> |
> y -2 | |
> | |
> -3 | | |
> 1 2 3
> x
>
> Thanks
> --
> Cyril Humbert
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• Next message: Timothy H. Keitt: "Re: [R] Fastest way to find the last index k such that x[k] < y in a sorted vector x? <Pine.A41.4.44.0206270938120.101084-100000@homer01.u.washington.edu>"
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