[R] Coord_equal in ggplot2

[Mike Lawrence]

If you use coord_equal on data where the range on the x-axis is larger
than the range on the y-axis, then of course you'll observe extra
space on the y-axis. What did you expect?

Also, this post may be better suited to the ggplot2 mailing list:
http://had.co.nz/ggplot2/

On Tue, May 19, 2009 at 7:17 AM, ONKELINX, Thierry
<Thierry.ONKELINX at inbo.be> wrote:
> Dear all,
>
> I'm plotting some points on a graph where both axes need to have the
> same scale. See the example below. Coord_equal does that trick but in
> this case it wastes a lot of space on the y-axis. Setting the limits of
> the y-axis myself was no avail.
>
> Any suggestions to solve this problem?
>
> library(ggplot2)
> ds <- data.frame(x = runif(1000, min = 0, max = 300000), y = runif(1000,
> min = 140000, max = 260000))
> ggplot(ds, aes(x = x, y = y)) + geom_point() + coord_equal()
> ggplot(ds, aes(x = x, y = y)) + geom_point() + coord_equal() +
> scale_x_continuous(limits = c(0, 300000)) + scale_y_continuous(limits =
> c(140000, 260000))
>
> Regards,
>
> Thierry
>
> ------------------------------------------------------------------------
> ----
> ir. Thierry Onkelinx
> Instituut voor natuur- en bosonderzoek / Research Institute for Nature
> and Forest
> Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
> methodology and quality assurance
> Gaverstraat 4
> 9500 Geraardsbergen
> Belgium
> tel. + 32 54/436 185
> Thierry.Onkelinx at inbo.be
> www.inbo.be
>
> To call in the statistician after the experiment is done may be no more
> than asking him to perform a post-mortem examination: he may be able to
> say what the experiment died of.
> ~ Sir Ronald Aylmer Fisher
>
> The plural of anecdote is not data.
> ~ Roger Brinner
>
> The combination of some data and an aching desire for an answer does not
> ensure that a reasonable answer can be extracted from a given body of
> data.
> ~ John Tukey
>
>
> Dit bericht en eventuele bijlagen geven enkel de visie van de schrijver weer
> en binden het INBO onder geen enkel beding, zolang dit bericht niet bevestigd is
> door een geldig ondertekend document. The views expressed in  this message
> and any annex are purely those of the writer and may not be regarded as stating
> an official position of INBO, as long as the message is not confirmed by a duly
> signed document.
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Mike Lawrence
Graduate Student
Department of Psychology
Dalhousie University

Looking to arrange a meeting? Check my public calendar:
http://tr.im/mikes_public_calendar

~ Certainty is folly... I think. ~