On Mar 27, 2012, at 9:39 AM, Gerrit Eichner wrote:
Hi, HJ,
see
?plotmath
Hth -- Gerrit
---------------------------------------------------------------------
Dr. Gerrit Eichner Mathematical Institute, Room 212
On Tue, 27 Mar 2012, HJ YAN wrote:
Dear R-help,
I am trying to express myself as best as I can here. If you also
use Latex
to edit math reports or other languages with similar editing method,
you'll see what I'm talking about. My sincere appologies if my
question is
not clear enough to some extend, as also I'm not able to provide my
code
here because I don`t know which one I can use...
When editing the title in R plots, such as using 'plot', or
'xyplot' in
'lattic', what method do you use to write greek letters and make
use of
superscript and subscript, e.g. to write mathematical expressions
like
using Latex:
\sigma^2
\tau^{2s}
\mu_i
\pi_{2s}
Also I would like to learn how to make two lines in the main title
or sub
title if the text I need it too long for putting in a single line,
e.g. are
there some R code/syntax allowing me to do something like in Latex
to make
two lines in the title, for example using '//' or '\\' to seperate
the two
parts of the text I want to put in two lines??
I heard about using something like
plot(x,y, main=expression(....))
but from neither '?plot' or '?expression' could I find comprehensive
information about what I need...
The plotmath environment (not the correct term) will not accept the
usual EOL "\n" marker for new lines. You can cobble together a
subsitute (at least for the two line problem) using the plotmath
`atop` function.
plot(1,1, main=expression(atop(" bbbblllllaaahhh"~tau,
"bllleeehhh"~epsilon)))
Notice the need for a plotmath connector such as "~" or "*" between
the text and the unquoted "greeks".
--
David Winsemius, MD
West Hartford, CT
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