Try this. The par("cxy") gets a vector of character width and height in user
coordinates.
points(0.25, par("usr")[3]-par("cxy")[2]/2, pch = 17, col = "red", cex = 2, xpd
= TRUE)
-------------------------------------
David L Carlson
Department of Anthropology
Texas A&M University
College Station, TX 77840-4352
-----Original Message-----
From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Giovanni Petris
Sent: Thursday, December 1, 2016 10:01 AM
To: r-help@r-project.org
Cc: Giovanni Petris
Subject: [R] Ajdustment of data symbols
Hello,
Is there a way to specify a non-default adjustment for data symbols, similar to
what "adj" does for text?
For example, the following lines of code produce a red triangle on the bottom
border of the plot:
plot(0, 0, type = 'n', xlab = "", ylab = "")
points(0.25, par("usr")[3], pch = 17, col = "red", cex = 2, xpd = TRUE)
I would like to draw the triangle completely outside the plotting area, with
the upper vertex touching the x-axis...
Thank you in advance!
Best,
Giovanni
--
Giovanni Petris, PhD
Professor
Director of Statistics
Department of Mathematical Sciences
University of Arkansas - Fayetteville, AR 72701
Ph: (479) 575-6324, 575-8630 (fax)
http://definetti.uark.edu/
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______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.
