[R-SIG-Finance] getSymbols() with various frequency
Spice Hank
ch@rch@t28 @end|ng |rom y@hoo@com
Thu Apr 4 16:58:30 CEST 2019
Thanks!
> On Apr 3, 2019, at 1:49 PM, Henrique Ramos <hpramos4 using gmail.com> wrote:
>
> Maybe the package BatchGetSymbols may help you. The main function (BatchGetSymbols) has a parameter for data frequency.
>
>
>
> Livre de vírus. www.avast.com.
>
>> Em qua, 3 de abr de 2019 às 16:41, Mario Pisa <mario.pisa using gmail.com> escreveu:
>>
>> This may be an approximation:
>>
>> for(symbol in symbols){ # establish trade-able instruments
>> stock(symbol, currency="USD",multiplier=1)
>> ticker <- getSymbols(symbol, auto.assign = F)
>> assign(paste0(symbol, “_daily"), ticker)
>> ticker <- to_weekly(ticker)
>> assign(paste0(symbol, “_weekly"), ticker)
>> }
>>
>>
>>
>>
>> > El 3 abr 2019, a las 20:48, Steve Hun via R-SIG-Finance <r-sig-finance using r-project.org> escribió:
>> >
>> > Hi,
>> >
>> > in this small code piece, the return stock prices are default to daily but
>> > intended to be in weekly or monthly format:
>> >
>> > for(symbol in symbols){ # establish trade-able instruments
>> > stock(symbol, currency="USD",multiplier=1)
>> > getSymbols(symbol)
>> > }
>> >
>> > One way to do that is use to.weekly() function. The issue is symbol (say,
>> > symbol = "SPY") is a character class, not "xts zoo" class so
>> > to.weekly(symbol) would incur errors. to.weekly(SPY) is fine. When the
>> > symbols list is long, this'd become annoying.
>> >
>> > So are there better to convert daily price to weekly/monthly?
>> >
>> > Thanks
>> >
>> > [[alternative HTML version deleted]]
>> >
>> > _______________________________________________
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>>
>> _______________________________________________
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>
>
> --
> --
> Henrique P. Ramos
>
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