Work with .RData files

loadutils.R

# load an object 'name' from a .RData file 'file'.
# eg
# x1 = loadFrom("foo.RData","x")
# x2 = loadFrom("bar.RData","x")
#
# useful when you want to load from two or more files with objects with the same name and
# load(file) would stomp on the second one.

loadFrom=function(file, name){e=new.env();load(file,env=e);e[[name]]}

# but what's in that .RData file anyway? Duncan Murdoch wrote this:

lsFrom <- function(file, all.names = FALSE, pattern) {
  e <- new.env()
  load(file, envir = e)
  ls(e, all.names = all.names, pattern = pattern)
}