On 01/20/2011 02:11 PM, Uwe Ligges wrote:
On 20.01.2011 14:08, Claudia Beleites wrote:
Gerrit,
thanks & viele Grüße nach Oberhessen :-)
plot (1, 1, ylab = expression (Z[list(i,i)]))
though that cannot be evaluated, either (due to [ not knowing what to do
with an index list)
Works for me with a recent R version.
Sorry, my comment wasn't clear: sure it produces the desired output, what I
meant is:
> Z
[,1] [,2]
[1,] 1 3
[2,] 2 4
> i <- 2
> eval (expression (Z[list(i,i)]))
Error in Z[list(i, i)] : invalid subscript type 'list'
whereas:
> eval (expression (Z[i,i]))
[1] 4
(and of course all the text-based solutions also lack the beauty of the
expression actually meaning in R what the output looks like)
for future searches: probably the easiest cheat is, of course,
plot (1, 1, ylab = expression (Z["i, i"]))
which is less convenient since you could not replace i by a dynamically
calculated number, for example.
good point.
Thanks, I learn a lot here :-)
Claudia
--
Claudia Beleites
Dipartimento dei Materiali e delle Risorse Naturali
Università degli Studi di Trieste
Via Alfonso Valerio 6/a
I-34127 Trieste
phone: +39 0 40 5 58-37 68
email: cbelei...@units.it
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