accented vowels

Aug 12, 2011; 3:23pmRe: Getting data from an *.RData file into a data.frame object.
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.

... [show rest of quote]

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