A few packages have support for basic download from Yahoo Finance. If that's
what you are trying to achieve - you may want to try quantmod (getSymbols
function) or tseries (get.hist.quote function). If you want to do something not
supported yet - first take a look at their source code.
Regards,
Ivan
> From: k...@csusb.edu
> Date: Tue, 12 Jan 2010 22:25:17 -0800
> To: r-help@r-project.org
> Subject: Re: [R] Dynamic file / url name with read.csv
>
>
> A few suggestions:
> Don't mix ' and "
> Use paste()
> Don't include an extraneous ;
>
> SymA<- "SPY"
> Sym1<-
> paste("http://ichart.finance.yahoo.com/table.csv?s=",SymA,"&ignore=.csv",sep="";)
> Symbol<- read.csv(Sym1, stringsAsFactors=F)
>
>
> On Jan 12, 2010, at 10:03 PM, B S wrote:
> >
> > Hi-
> >
> > I would like to be able to change the value of SymA below and download a
> > file from the corresponding URL. Hardcoded, this line works fine:
> >
> > Symbol<-
> > read.csv("http://ichart.finance.yahoo.com/table.csv?s=SPY&ignore=.csv";,
> > stringsAsFactors=F)
> >
> > However, when I incorporate using a variable for the ticker, it no longer
> > works.
> >
> > SymA<- "SPY"
> > Sym1<-
> > cat('http://ichart.finance.yahoo.com/table.csv?s=",SymA,"&ignore=.csv",sep="";;)
> > Symbol<- read.csv(Sym1, stringsAsFactors=F)
> >
> > I know that the problem lies in the concatenation, but I've tried different
> > variations of cat() and toString() (and others) with SymA and Sym1 but
> > cannot seem to get a string together that will work. Would appreciate any
> > suggestions for this simple problem??
> >
> > Thank you.
> >
> >
> >
> >
> > ______________________________________________
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> > 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.
>
> ______________________________________________
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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