load_R_object.RdA convenience function that, given a path to a .RData file, will load in a specified R object contained within the file.
load_R_object(path_to_rdata, which_object)A character string,
a path to a .RData file to be passed
on to the load
The variable name for the R object to return from the set of all variables loaded in from the .RData file. Uses non-standard evaluation.