On 12/08/2011 3:12 PM, Ed Heaton wrote:
Hi, all.I'm new to R. I've been a SAS programmer for 20 years. I seem to be having trouble with the most basic task - bringing a table in an *.RData file into a data.frame object. Here's how I created the *.RData file. library(RODBC) db<- odbcConnect("*******") df<- sqlQuery( db , "select * from schema.table where year(someDate)=2006" ) save( df , file="C:/Documents and Settings/userName/My Documents/table2006.RData" ) dim(df) remove(df) odbcClose(db) remove(db) detach("package:RODBC") Next, I moved that data file (table2006.RData) to another workstation - not at the client site. Now, I need to get that data file into a data.frame object. I know this should be simple, but I can't seem to find out how to do that. I tried the following. First, after opening R without doing anything, RGui used 35,008 KB of memory. I submitted the following. > debt2006<- load("T:/R.Data/table2006.RData") Memory used by RGui jumped to 191,512 KB. So, it looks like the data loaded. However, debt2005 is of type character instead of data.frame. > ls() [1] "debt2005" > class(debt2005) [1] "character" > Help, please.
save() and load() work with multiple objects, and the objects keep their names. So your object would be recreated as "df" after the load.
If you just want to save the data from one object without its name, use saveRDS() and readRDS().
Duncan Murdoch ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
