Re: [R] source() does not include added code
Thank you. That explains it (auto-printing is not done).
On 8/31/2016 8:35 AM, Joshua Ulrich wrote:
I have quantstrat installed and it works fine for me. If you're
asking why the output of t(tradeStats('macross')) isn't being printed,
that's because of what's described in the first paragraph in the
*Details* section of help("source"):
Note that running code via ‘source’ differs in a few respects from
entering it at the R command line. Since expressions are not
executed at the top level, auto-printing is not done. So you will
need to include explicit ‘print’ calls for things you want to be
printed (and remember that this includes plotting by ‘lattice’,
FAQ Q7.22).
So you need:
print(t(tradeStats('macross')))
if you want the output printed to the console.
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Re: [R] source() does not include added code
1. File is (was) saved.
2. The added code is
t(tradeStats("macross"))
with 2 )'s.
I'd appreciate if someone with QuantStrat installed, to try this
and see if they get a different result. My R and RStudio and
QuantStrat libraries are all current.
I get the chart and this much output.
> source('~/CodingData/RCode/Quantstrat1/maCross.R')
[1] "2001-06-27 00:00:00 AAPL 100 @ 1.526312"
[1] "2001-09-07 00:00:00 AAPL -100 @ 1.13002"
[1] "2002-01-07 00:00:00 AAPL 100 @ 1.497538"
[1] "2002-07-10 00:00:00 AAPL -100 @ 1.132636"
[1] "2003-05-16 00:00:00 AAPL 100 @ 1.22942"
[1] "2006-06-22 00:00:00 AAPL -100 @ 7.792429"
[1] "2006-09-26 00:00:00 AAPL 100 @ 10.150561"
[1] "2008-03-07 00:00:00 AAPL -100 @ 15.988996"
[1] "2008-05-19 00:00:00 AAPL 100 @ 24.012922"
[1] "2008-09-24 00:00:00 AAPL -100 @ 16.833895"
[1] "2009-05-14 00:00:00 AAPL 100 @ 16.080549"
[1] "2012-12-11 00:00:00 AAPL -100 @ 71.436852"
[1] "2013-09-11 00:00:00 AAPL 100 @ 62.897826"
[1] "2015-08-31 00:00:00 AAPL -100 @ 110.399553"
Time difference of 0.3014359 secs
[1] "trade blotter portfolio update:"
Time difference of 0.1732061 secs
>
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[R] source() does not include added code
I am trying to understand why "source" does not process
all the code in this R file.
1. I copied maCross.R from the quantstrat/demo directory
into my project area.
QuantStrat is available at
https://r-forge.r-project.org/R/?group_id=316
install.packages("quantstrat", repos="http://R-Forge.R-project.org;)
2. I added this line at the end of the R file:
t(tradeStats("macross")
3. When I enter:
source('maCross.R')
at the prompt, it fails to process the added line of code.
Why not?
--DAE
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[R] removing lines from text file
I downloaded a text file which has several lines of text before the header line of the data, similar to this: ---start--- Corn December 2012 (CZ2012) Source: Wikiposit Open Data via wikiposit.org (http://wikiposit.org/uid?FUTURE.CZ2012) Update: http://wikiposit.org/w?action=dldltypes=comma%20separatedsp=dailyuid=FUTURE.CZ2012 Date,Open,High,Low,Settle,Volume,OpenInt, 08-Jun-2009,0,469.5,469.5,469.5,0,0, 09-Jun-2009,0,476.75,469.5,476.75,0,0, ... After I download the file using R, how do I remove the lines of text that appear before the header line (Date, Open, ...)? __ R-help@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.
