Displaying 8 results from an estimated 8 matches for "tobiasbr".
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tobias
2006 Jul 03
1
rownames, colnames, and date and time
...uld agree with Eric that a consistent use of the typecast would
be a reasonable solution.
Any comments?
Tobias Brandt
Quantitative Analyst
Taquanta Asset Managers
Nedbank Clock Tower
Victoria & Alfred Waterfront, Cape Town 8001
Tel : +27 (0) 21 416 6602
Fax : +27 (0) 21 416 9945
Email : TobiasBr@Taquanta.com <mailto:TobiasBr@Taquanta.com>
>-----Original Message-----
>From: r-help-bounces@stat.math.ethz.ch
>[mailto:r-help-bounces@stat.math.ethz.ch] On Behalf Of Erich Neuwirth
>Sent: 21 March 2006 01:31 PM
>To: R-help@stat.math.ethz.ch
>Cc: Christian Prinoth
>...
2005 Oct 27
1
data.frame-question]
...major 2
minor 2.0
year 2005
month 10
day 06
svn rev 35749
language R
-----Original Message-----
From: Michael Graber [mailto:michael_graber@gmx.de]
Sent: 27 October 2005 12:43 AM
To: TobiasBr@Taquanta.com
Subject: Re: Re: [R] data.frame-question]
This is what I am looking for, but I still get an error message, that my
arguments are not of the same length.
How can I avoid this error message? Maybe I should add, that there are also
NA´s in the second column, but I tried to ignore them by...
2005 Nov 14
2
Coercion of percentages by as.numeric
Hi
Given that things like the following work
> a <- c("-.1"," 2.7 ","B")
> a
[1] "-.1" " 2.7 " "B"
> as.numeric(a)
[1] -0.1 2.7 NA
Warning message:
NAs introduced by coercion
>
I naively expected that the following would behave differently.
> b <- c('10%', '-20%', '30.0%',
2005 Nov 14
2
[<- and indexing for zoo objects
Hi
I've been greatly enjoying the functionality the zoo package offers.
However I've hit a snag with the following code
> a <- zoo(matrix(1:10,5,2), 2001:2005)
> a
2001 1 6
2002 2 7
2003 3 8
2004 4 9
2005 5 10
> a[I(2003), 2]
2003 8
> a[I(2003), 2] <- NA
Error: subscript out of bounds
>
I've also tried
> coredata(a[I(2003), 2])
2006 Apr 07
1
rownames for as.matrix.zoo
On Fri, 7 Apr 2006 16:09:53 +0200 Brandt, T. (Tobias) wrote:
> Hi
>
> Is there a reason why as.matrix.zoo doesn't set the rownames to the
> index like as.data.frame.zoo does?
Yes, oversight, I think ;-)
Added to the devel-version of zoo. I'll try to get it out to CRAN in
the next days.
Z
> Thanks
>
> Tobias
>
>
> > library(zoo)
> > x.Date
2006 Oct 26
2
pairs matchning
Hi
You could try to find an equivalent representation as a string and try to
match those.
> (A <- cbind(sample(1:2, 10, rep=TRUE), sample(1:2, 10, rep=TRUE)))
[,1] [,2]
[1,] 1 2
[2,] 1 2
[3,] 1 2
[4,] 2 2
[5,] 1 1
[6,] 1 2
[7,] 1 2
[8,] 1 1
[9,] 1 2
[10,] 1 1
> (B <- unique(A))
[,1] [,2]
[1,] 1 2
2007 Jan 15
2
Problem with pdf, png, jpeg devices and files named CON on Window s
Hi
I cannot seem to create any files that have the name "CON" before the file
extension, i.e. all of the following fail:
> pdf("CON.pdf")
Error in pdf("CON.pdf") : unable to start device pdf
> jpeg('CON.jpeg')
Error in jpeg("CON.jpeg") : unable to start device devWindows
> png('CON.png')
Error in png("CON.png") : unable
2006 Oct 26
1
Up- or downsampling time series in R
Hi
I have data that is sampled (in time) with a certain frequency and I would
like to express this time series as a time series of a higher (or lower)
frequency with the newly added time points being filled in with NA, 0, or
perhaps interpolated. My data might be regularly or irregularly spaced. For
example, I might have quarterly data that I would like to handle as a
monthly time series with