I think you want the ?lines function.
To connect a point (x,y) to the x-axis,
lines(x=c(x,x),y=c(y,0))
...draws a line from that point to the x-axis. You may also want to specify
pch=c(?,""),type="b" where ? is the original point type (which you don't
want to "run over") and "" is the pch for t
On Behalf Of Anny Huang
> Sent: Monday, 8 September 2008 8:49 a.m.
> To: r-help@r-project.org
> Subject: [R] how to draw a vertical line from points to x-axis
>
> Hello,
>
> I want to know how to draw a line connecting each point to
> the x-axis perpendicularly (i.e. a verti
2008/9/7 Anny Huang <[EMAIL PROTECTED]>:
> Hello,
>
> I want to know how to draw a line connecting each point to the x-axis
> perpendicularly (i.e. a vertical line).
> abline(v=...) seems not to work for my purpose, because it runs over the
> data point. Can anyone help? Thanks.
>
If your x-axis
ptember 2008 8:49 a.m.
> To: r-help@r-project.org
> Subject: [R] how to draw a vertical line from points to x-axis
>
> Hello,
>
> I want to know how to draw a line connecting each point to
> the x-axis perpendicularly (i.e. a vertical line).
> abline(v=...) seems not to wor
Hello,
I want to know how to draw a line connecting each point to the x-axis
perpendicularly (i.e. a vertical line).
abline(v=...) seems not to work for my purpose, because it runs over the
data point. Can anyone help? Thanks.
Anny
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