[R] Rotated text on a regression line

From: Dr. Christoph Scherber <Christoph.Scherber_at_agr.uni-goettingen.de>
Date: Tue, 27 May 2008 23:25:57 +0200 (CEST)

Dear all,

I stumbled over a problem recently when trying to use srt with text() on a windows device.

What I intended to do was to plot a simple regression line, and to rotate a piece of text such that the text has the same angle as the regression line.

However, the text is always plotted in a slightly wrong angle:


x=1:10 #create arbitrary x and y values y=x*2-rnorm(1:10)

plot(x,y,pch=16,xlim=c(0,10)) #create the graph abline(lm(y~x))

#calculate the y coordinate of the text:

#calculate the slope:




What am I doing wrong here?

Many thanks in advance for any help!

Best wishes

(using R 2.6.1 on Windows XP)

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. Received on Tue 27 May 2008 - 22:08:51 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Wed 28 May 2008 - 15:00:41 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive