[R] Text position in Traditional Graphics

From: Mike Prager <mike.prager_at_noaa.gov>
Date: Wed 24 Jan 2007 - 21:30:23 GMT

R 2.4.1 on Windows XP.

Question: In traditional graphics, is it possible to find out the height of a line of text in units that can be used in arithmetic and then in calls to text()?

Context: I have written a function that draws a plot and then, depending on whether some arguments are TRUE or FALSE, draws various lines of text in the plot. The text lines may be turned on or off individually by the user. The function uses plot() and several calls to text().

However, I have not found a good way to adjust the Y coordinate of the text for lines after the first. I would like this to work when the graphics device (windows) is opened at (or resized to) a wide range of sizes. The issue is that a line of text takes up a smaller fraction of the total Y span of the plotting region as the window gets larger.

It seems this can be done with grid graphics, but although I plan to learn grid, I am hoping that for now, I can do this work with traditional graphics.


Mike Prager, NOAA, Beaufort, NC

* Opinions expressed are personal and not represented otherwise.
* Any use of tradenames does not constitute a NOAA endorsement.
______________________________________________ R-help@stat.math.ethz.ch 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 Thu Jan 25 16:13:01 2007

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.1.8, at Thu 25 Jan 2007 - 05:30:29 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.