Article on several different ways to connect R-project to Excel, published on The R Trader Blog.
An Introductory guide to the XML package for R-Project, written by Duncan Temple Lang
Besides the XML package, Omega Project for Statistical computing has a number of other R-Project packages that look very interesting, like KML, Python, and WordPress packages.
Step by step instructions on reading/parsing XML data using R-Project. from Informit.com written by Tobi Bosede
Really good site to learn R-Project:
Useful command – to tell the datatype of a variable:
Creating a vector. Use the “Combine” function (c):
variable_name=c(value1, value2, value3)
Create and name vectors:
poker_vector = c(140, -50, 20, -120, 240)
names(poker_vector) = c(“Monday”, “Tuesday”, “Wednesday”, “Thursday”, “Friday”)
or name using another vector
days_vector = c(“Monday”,”Tuesday”,”Wednesday”,”Thursday”,”Friday”)
names(poker_vector) = days_vector