Thanks a lot for your reply Jim.
I want to be able to run flex(xx-xx-,xx-xx-) at multiple date
ranges, but couldn't make it work because I wasn't using the correct syntax.
I will give it a try and post my findings (not too spectacular, of course).
Thanks again,
Mateo
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Depends on what you want to do with the date. If it is a character
string, then just quote it:
flex("xx-xx-","xx-xx-")
If you want it as a Date or POSIXct object, then convert it:
flex(as.Date('2011-05-01"), as.Date('2011;05-31"))
It all depends on how you are using it in your custom
Hello gentlemen,
This is a great discussion. Thank you all for providing useful answers.
I am also new to R, was working mostly with SAS before, and have a question
regarding passing arguments to R functions that are wrapped in quotes.
Using the previous example:
getSymbols(tickers, from="start
On Apr 6, 2011, at 12:06 PM, algotr8der wrote:
Hi Joshua,
THank you for showing me how to use getSymbols. I am trying to
follow the
example you provided. However I am having some difficulty using the
various
combination of functions you have used. I tried to execute one step
at a
time a
Hi Joshua,
THank you for showing me how to use getSymbols. I am trying to follow the
example you provided. However I am having some difficulty using the various
combination of functions you have used. I tried to execute one step at a
time as follows -
I have a ticker vector that looks like the f
Hi Joshua,
Thank you for showing me how to use the getSymbols function. So I tried the
following without success -
> tickers
[1] "SPY" "DIA" "IWM" "SMH" "OIH" "XLY" "XLP" "XLE" "XLI" "XLB" "XLK" "XLU"
"XLV"
[14] "QQQ"
> str(tickers)
chr [1:14] "SPY" "DIA" "IWM" "SMH" "OIH" "XLY" "XLP" "XLE" ..
Sorry for the late reply. Here's another approach using
quantmod::getSymbols. It implicitly loops over a vector of tickers.
require(quantmod)
getSymbols(tickers[,1], from="2011-01-01", to="2011-01-31")
# If you want to merge all the close prices into one object:
ClosePrices <- do.call(merge, lap
On Mar 13, 2011, at 2:29 PM, algotr8der wrote:
Thank you all. Your solutions work. I suppose it doesnt matter
whether I use
coredata or not (at least for my current purposes). I have created a
user-defined function and have saved it in a ".R" file in my current
working
directory. But now I'
Thank you all. Your solutions work. I suppose it doesnt matter whether I use
coredata or not (at least for my current purposes). I have created a
user-defined function and have saved it in a ".R" file in my current working
directory. But now I'm not sure how to invoke this function. R complains
tha
On Mar 13, 2011, at 1:28 AM, Dennis Murphy wrote:
Hi:
(1) The first argument to get.hist.quote() is instrument, not
instruments. I
concur with David that get.hist.quote()
takes a single character string as an argument.
(2) I tried running this with lapply() but got a download error on
Hi:
(1) The first argument to get.hist.quote() is instrument, not instruments. I
concur with David that get.hist.quote()
takes a single character string as an argument.
(2) I tried running this with lapply() but got a download error on the last
one:
getStockData("PBR-B")
trying URL '
http:
On Mar 13, 2011, at 12:18 AM, algotr8der wrote:
Thanks David for the reply. I just tried the following with the same
result:
library(tseries)
tickers <- read.csv("testticker.txt", header=FALSE, sep=",")
tickers <- tickers[1]
V1
1 XOM
2 COP
3 PBR-A
4 FFIV
5SU
6 PBR-B
tickers
Thanks David for the reply. I just tried the following with the same result:
>library(tseries)
>tickers <- read.csv("testticker.txt", header=FALSE, sep=",")
>tickers <- tickers[1]
V1
1 XOM
2 COP
3 PBR-A
4 FFIV
5SU
6 PBR-B
> tickers$V1 <- as.character(tickers$V1)
> tickers$V1
[1] "
On Mar 12, 2011, at 3:08 PM, algotr8der wrote:
I am new to R so I apologize if my question is trivial. I have not
been able
to figure out whether what I want to do is even possible.
I have a data frame of stock ticker symbols which I store into R
space from
a txt file as follows:
tickers
I am new to R so I apologize if my question is trivial. I have not been able
to figure out whether what I want to do is even possible.
I have a data frame of stock ticker symbols which I store into R space from
a txt file as follows:
tickers <- read.csv("stocks.txt", header=FALSE, sep=",")
ticke
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