Twp helpful utilities to read downloads.\
composeURL(…, prefix="http://")
indexGrep(pattern, x, …)[composeURL]
character strings from which the URL will be composed.
[indexGrep]
optional arguments to be passed to the function grep.
a character string specifying the prefix of the URL.
a character string containing a regular expression to be matched in the given character vector.
a character vector where matches are sought.
Diethelm Wuertz, Yohan Chalabi, and Andrew Ellis, (2010); Financial Market Data for R/Rmetrics, Rmetrics eBook, Rmetrics Association and Finance Online, Zurich, www.rmetrics.org.