CODEWITHSUNDEEP
robjectstata
Metrics
Metrics

Reputation: 15458

Object in the workspace in R

I am trying to save the stata data (data.dta) as R data and then load the data using the paste function and then assign the name using get and paste function. 

library(foreign)
getwd()
"C:/Users/Vista/Documents/project"
year<-2010
income2010x.dta<-read.dta("data.dta")
save(income2010x.dta,file="income2010x.rda")
load( paste0( "income" , year , "x.rda" ) )
z <- get( paste0( "income" , year , "x.dta" ) )  # works
z <- get( paste0( "income" , year , "x.rda" ) ) # doesn't work 
z
Error in get(income2010x.rda) : object 'income2010x.rda' not found
ls()
income2010x.dta
...

I find that income2010x.dta is stored as the object after these steps but income2010x.rda is not. So, z <- get( paste0( "income" , year , "x.rda" ) ) didn't work. Any idea?

Upvotes: 1

Views: 288

Answers (2)

IRTFM
IRTFM

Reputation: 263362

When you do this:

load( paste0( "income" , year , "x.rda" ) )

.... You get (in the colloquial sense of "acquire" or "access" or "recover") an object (or objects) named whatever named it had when it (they) were saved. In this case you would have an object named 'income2010x.dta' but no object named "income2010x.rda", so this "get" in the restricted meaning of the R function:

z <- get( paste0( "income" , year , "x.rda" ) )

.... as you observed ..."doesn't work".

Upvotes: 1

mnel
mnel

Reputation: 115390

income2010x.dta<-read.dta("data.dta")

creates a data.frame call ed income2010x.dta within the workspace.

save allows you to save many objects, and when you load them they will have the same names as when you saved them.

you can use saveRDS to save a single object and readRDS to read it to another name

saveRDS(income2010x.dta,file="income2010x.rda")
income2010x.rda <- readRDS('income2010x.rda')

That being said, I don't understand why you need two copies, or why you are using get to create a third copy of the same object as z

Upvotes: 1

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