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1,265 results for “from:Ulrich”

extracting technical indicators
Joshua Ulrich · Feb 12, 2007 · r-sig-finance

It seems to be an error in the functions. They call an object (x) that isn't defined in the function arguments. I would suggest simply calculating the function results yourself, since they aren't complicated: vohl.TA <- H - L...

Version 1.3.0 of apcluster package on CRAN
Ulrich Bodenhofer · Jan 8, 2013 · r-help

Dear colleagues, This is to inform you that Version 1.3.0 of the R package apcluster has been released on CRAN yesterday. We did a major extension and overhaul of the package. Most importantly, we added Leveraged Affinity Propagation...

source() does not include added code
Joshua Ulrich · Aug 31, 2016 · r-help

On Wed, Aug 31, 2016 at 10:05 AM, Doug Edmunds <dougedmunds at gmail.com> wrote: > I am trying to understand why "source" does not process > all the code in this R file. > > 1. I copied maCross.R from the...

[R-pkg-devel] Conditionally register method with generic in other package
Joshua Ulrich · Dec 6, 2017 · r-package-devel

I have a feeling I know the answer to this question, but I'm asking with the hope that I learn something new. Package A defines a S3 generic function, "foo()". Package B defines a S3 class "bar", and a...

Problem with Ubuntu bionic R 3.5
Ulrich Leuchtmann · Jun 16, 2018 · r-sig-debian

Hi Dirk. I saw you installed a new release. Unfortunately the problem mentioned below does persist. I know this is perhaps a minor issue, as users report they can install manually (see below). But under strict installation policies this can...

TTR Yang-Zhang volatility bug?
Joshua Ulrich · Mar 15, 2013 · r-sig-finance

On Fri, Mar 15, 2013 at 4:53 PM, rex <rex at nosyntax.net> wrote: > Joshua Ulrich <josh.m.ulrich at gmail.com> [2013-03-15 12:51]: > >> What version of TTR are you using? I may have already fixed...

xts and to.weekly function
Joshua Ulrich · Apr 20, 2009 · r-sig-finance

Does this provide what you want? require(quantmod) getSymbols("USD/EUR",src="oanda",from="2009-01-01") # endpoints(..., on='weeks') returns Sundays fri <- endpoints(USDEUR, on='weeks')-2 # replace first observation with zero, and remove last observation # see ?endpoints fri...

adjustOHLC discrepancy
Joshua Ulrich · Oct 6, 2012 · r-sig-finance

Jim, Looks like the issue was that dividends provided by Yahoo are back-adjusted for splits. I knew this (see TTR::getYahooData), but that knowledge didn't find its way into adjustOHLC (until now). I've updated adjustOHLC on R...

lappy and xts get all indexes from a list ?
Joshua Ulrich · Oct 31, 2014 · r-help

I do this a few times in the blotter package. Try: Dates <- unique(do.call(c,c(lapply(foo, index), use.names=FALSE, recursive=FALSE))) On Fri, Oct 31, 2014 at 11:44 AM, ce <zadig_1 at excite.com...

getSymbols and PD-UN
Joshua Ulrich · Dec 17, 2009 · r-sig-finance

Nick, The error tells you. The page doesn't exist because there's no historical data for that symbol. http://finance.yahoo.com/q/hp?s=PD-UN.TO Best, Josh -- http://www.fosstrading.com On Thu, Dec 17, 2009...

Performanceanalytics Charts - removing default date in title?
Joshua Ulrich · May 23, 2023 · r-sig-finance

Hi Jason, There's no way to do this with PerformanceAnalytics currently. I just made a PR on GitHub that lets you do it: https://github.com/braverock/PerformanceAnalytics/pull/183 Best, Josh On Sun, Feb 26, 2023 at 11...

Sighandlers
Ulrich Staudinger · Nov 17, 2012 · r-devel

Hello everyone, I am searching and searching and can't find an answer. I try to register a sighandler in my extension's C code. But my sighandler is never called. Is there anything preventing extensions to receive signals? I...

Using abline with chartSeries
Joshua Ulrich · Apr 7, 2012 · r-sig-finance

Worik, On Sat, Apr 7, 2012 at 9:10 PM, Worik Stanton <worik.stanton at gmail.com> wrote: > Friends > > I would like to be able to draw vertical lines on a chart resulting from > chartSeries. > > I can draw horrizontal lines...

'is.integer' (PR#13671)
Joshua Ulrich · Apr 22, 2009 · r-devel

> typeof(1) [1] "double" 1 is obviously *not* an integer value. Best, Josh -- http://quantemplation.blogspot.com http://www.fosstrading.com On Wed, Apr 22, 2009 at 12:45 PM, <hzambran.newsgroups at gmail.com> wrote: > Full_Name: Mauricio > Version...

Math problem with xts objects
Joshua Ulrich · May 13, 2013 · r-help

On Mon, May 13, 2013 at 6:47 PM, Noah Silverman <noahsilverman at ucla.edu> wrote: > Hello, > > I coming across a strange problem doing math on an xts object. > > If I have an xts object of stock prices (perhaps 5...

Computation on xts
Joshua Ulrich · Apr 30, 2011 · r-sig-finance

Hi Robert, On Sat, Apr 30, 2011 at 12:39 AM, <me at censix.com> wrote: > >> Hi, >> >> I have the following time series in xts >> >>> getSymbols("SBUX"); >> [1] "SBUX" >> Warning message: >> In download.file(paste(yahoo.URL, "s=", Symbols.name...

[RFC] A case for freezing CRAN
Joshua Ulrich · Mar 19, 2014 · r-devel

On Tue, Mar 18, 2014 at 3:24 PM, Jeroen Ooms <jeroen.ooms at stat.ucla.edu> wrote: <snip> > ## Summary > > Extending the r-release cycle to CRAN seems like a solution that would > be easy to implement. Package updates simply...

subtract 2 columns in a data.frame
Ulrich Leopold · Sep 4, 2003 · r-help

> E.g., > > mydata$difference <- mydata$x - mydata$y > That's what I thought, but I get the following message: > propLSK.STONE.Pox0t30$Pox0t30STONE-propLSK.STONE.Pox0t30$Pox0t30 numeric(0) Does it mean the resulting vector is empty? If yes, what...

SMA and EMA in package TTR
Joshua Ulrich · Feb 2, 2011 · r-help

Hi Anyi, That's not currently possible. You could use the rollmean function in the development version of the zoo package (on R-forge) to calculate the simple moving average as you described. I would like to add this as...

Volume stats and 5 minute bars
Joshua Ulrich · Jun 16, 2011 · r-sig-finance

On Thu, Jun 16, 2011 at 2:08 PM, Noah Silverman <noahsilverman at ucla.edu> wrote: > Hi, > > I have some raw tick data. (Individual trades with 1 second resolution.) > > I'd like to convert them to 5 minute bars - that...

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