Hi,
I need a list of expression of the form expression(b[i]), where i is a running index. So for example, if i <- -1:2, I would like to have a list equivalent to
list(expression(b[-1]), expression(b[0]), expression(b[1]), expression(b[2]))
"i" might be a character vector (like c("f", "g", "h"))
Could somebody help me out by writing a function that produces the list above for a given string in place of "b" and a vector of subscripts?
Sorry if this has been discussed before, I tried searching the archives but "expression" as a keyword gives too many results on different subjects.
Thanks,
Tamas
For example:
lapply(as.double(-1:2), function(x) substitute(b[i], i = list(i=x)))
Uwe Ligges
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