Hi,
I am using R a lot to make plots relating to radioactivity, I am often using
expression() to label the plots with nuclide names written with
superscripts, e.g.
expression(paste("Releases of ", { }^{99},Tc," (TBq/year)"))->ywtext
But, is there any simple way to change the number and name of the nuclide
through a variable? I tried
nuccode=expression({ }^{99},Tc)
expression(paste("Releases of ", as.expression(nuccode) ,"
(TBq/year)"))->ywtext
But, obiously, since as.expression does not return a chr, it was used
literally in the text on the figure, i.e. "Releases of
as.expression(nuccode) (TBq/year)" which definiately was not what I
wanted...
should I use some other wrapper function on the expression, or are there
some other ways of making superscripts in figure texts?
regards
Morten
--
Morten Sickel
Norwegian Radiation Protection Authority
http://www.nrpa.no
______________________________________________
[EMAIL PROTECTED] mailing list
http://www.stat.math.ethz.ch/mailman/listinfo/r-help
