On 03/18/2014 09:18 AM, Jinsong Zhao wrote:
Hi there,
I hope to rotate the Y label of axis(4) with -90 degree. I can typeset
the Y label using text() with srt = -90. However, I cannot get the
coordinate of the position that mtext() used.
In other words, I hope to convert:
mtext("Y label", side = 4, at = 0, line = 2)
to
text(x, 0, "Y label", str = -90)
Now, I don't know how to get the x in the above expression. I can give
it an arbitrary value. However, I hope it could be more precise.
Hi Jinsong,
If you mean the distance from the axis, mtext is placed by a multiple of
the height of a line of text. Therefore:
strheight("O") * 2
will give you an approximate distance in user units. You can then add
this to the user coordinate of the right ordinate of the plot:
par("usr")[2]
to get your "x" value. You will probably want to adjust this to get the
desired visual spacing.
Jim
______________________________________________
R-help@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.
