R help - Feb 2012 - Using a FOR LOOP to name objects

Hello,

I am trying to use a for loop to name objects in each iteraction. As in the
following example (which doesn't work quite well)

my_list<-c("A","B","C","D","E","F")
for(i in c(1:length(my_list))){
  url<- "http://finance.yahoo.com"
  doc = htmlTreeParse(url, useInternalNodes = T)
  tab_nodes = xpathApply(doc, "//table[@cellpadding = '3']")
  *my_list[i]*=lapply(tab_nodes, readHTMLTable)     #problem is in this line
  names(*my_list[i]*)=c("Ins","outs")
  }

The problem is that in iteraction #1, I need the info to be stored at an
object called "A"; At iteraction #2 at object called "B"...
and so on....

Any idea/help?

thank you in advance!

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In short, don't -- use a named list instead.

Long answer:

?assign
?get

Michael

On Tue, Feb 28, 2012 at 10:40 PM, michaelyb <cel81009759 at gmail.com>
wrote:
> Hello,
>
> I am trying to use a for loop to name objects in each iteraction. As in the
> following example (which doesn't work quite well)
>
>
my_list<-c("A","B","C","D","E","F")
> for(i in c(1:length(my_list))){
> ?url<- "http://finance.yahoo.com"
> ?doc = htmlTreeParse(url, useInternalNodes = T)
> ?tab_nodes = xpathApply(doc, "//table[@cellpadding =
'3']")
> ?*my_list[i]*=lapply(tab_nodes, readHTMLTable) ? ? #problem is in this line
> ?names(*my_list[i]*)=c("Ins","outs")
> ?}
>
> The problem is that in iteraction #1, I need the info to be stored at an
> object called "A"; At iteraction #2 at object called
"B"... and so on....
>
> Any idea/help?
>
> thank you in advance!
>
> --
> View this message in context:
http://r.789695.n4.nabble.com/Using-a-FOR-LOOP-to-name-objects-tp4430454p4430454.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help at 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.

Michael - thank you so much! Just what I needed! 

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