[R] lines and points without margin

[baptiste auguie]

Hi,

Try the following,

plot(1:10,rnorm(10),t="o")

## fill the points in white
plot(1:10,rnorm(10),t="o",pch=21,bg="white")

You could also try this with Grid graphics,

library(gridExtra)
# like type="o"
grid.barbed(space=0)
# like type="b"
grid.barbed(space=1)
# like the example above, but without filling the dots
grid.barbed(space=0.5)

(I may be wrong but don't recall that this parameter is tunable with
base graphics)

HTH,

baptiste

On 14 December 2010 16:33, Andrew Collier <collierab at gmail.com> wrote:
> hi,
>
> i am sure that this is a trivial question but i have not been able to
> find an answer by searching the mailing lists. i want to plot points on
> a graph, joined by lines. the command that i am using is
>
> points(x, y, type = "b", pch = 21)
>
> this plots nice open circles at the data points and draws lines between
> them. however, the lines do not come all the way up to the edge of the
> circles but stop some small distance away so that there is an empty
> "margin" around the circles. is there a way to get rid of this margin?
> my first guess was that there would be an option to par() but i did not
> find anything there. any suggestions would be appreciated.
>
> thanks!
>
> best regards,
> andrew.
>
> --
> Andrew B. Collier
>
> Physicist
> Waves and Space Plasmas Group
> Hermanus Magnetic Observatory
>
> Honorary Senior Lecturer                             tel: +27 31 2601157
> Space Physics Research Institute                     fax: +27 31 2607795
> University of KwaZulu-Natal, Durban, South Africa    gsm: +27 83 3813655
>
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