R help - Jun 2014 - how to get information of many stocks by using loop cycling in R

Dear R-core :

I am a user of R language from China. I have some problems when I use
function ¡°getSymbols¡± which belongs to package ¡°quantmod¡±,and I hope I
can get some help from you.

I can get some information of one stock just by entering
¡°s1<-getSymbols("600016.ss",from = "2011-05-01",to
"2014-05-01",auto.assign=FALSE)¡±in the R workspace, but if I want to
get
some information of 100 stocks, it is inconvenient for me to enter similar
order hundred times. So I want to use loop cycling.

 

stock<-c("600016.ss","600059.ss","600060.ss","600069.ss")

for(i in seq(stock))

{

S[i]<-getSymbols(stock[i],from="2011-05-01",to="2014-05-01",auto.assign=FALS
E)

}

 

But I do not know how to define S because the class of S[i] are ¡°xts¡± and
¡°zoo¡±.

Could you give some help, thank you very much.

 
One of users of R in China

                                           

                                                          

 


	[[alternative HTML version deleted]]

Make 'S' either an environment or a list.  E.g.,
   SymList <- lapply(c("TIBX","X","IBM"),
getSymbols,
auto.assign=FALSE) # lapply returns a list
or
   SymEnv <- new.env() # or SymList <- list()
   for(sym in c("TIBX", "X", "IBM")) SymEnv[[sym]]
<- getSymbols(sym,
auto.assign=FALSE)
Use SymList[["TIBX"]] or SymEnv[["TIBX"]] to extract the
information for TIBX.

Bill Dunlap
TIBCO Software
wdunlap tibco.com


On Mon, Jun 9, 2014 at 1:12 AM, ?? <m15972031039 at 163.com>
wrote:
> Dear R-core :
>
> I am a user of R language from China. I have some problems when I use
> function ?getSymbols? which belongs to package ?quantmod?,and I hope I
> can get some help from you.
>
> I can get some information of one stock just by entering
> ?s1<-getSymbols("600016.ss",from = "2011-05-01",to
> "2014-05-01",auto.assign=FALSE)?in the R workspace, but if I want
to get
> some information of 100 stocks, it is inconvenient for me to enter similar
> order hundred times. So I want to use loop cycling.
>
>
>
>
stock<-c("600016.ss","600059.ss","600060.ss","600069.ss")
>
> for(i in seq(stock))
>
> {
>
>
S[i]<-getSymbols(stock[i],from="2011-05-01",to="2014-05-01",auto.assign=FALS
> E)
>
> }
>
>
>
> But I do not know how to define S because the class of S[i] are ?xts? and
> ?zoo?.
>
> Could you give some help, thank you very much.
>
>
> One of users of R in China
>
>
>
>
>
>
>
>
>         [[alternative HTML version deleted]]
>
>
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