Displaying 20 results from an estimated 500 matches similar to: "isdst warning when rounding a range of time data: fix or suppress?"
2008 Apr 10
1
ISOdate/ISOdatetime performance suggestions, other date/time questions
Dear list:
working with date/times I have come across a problem that ISOdate and
ISOdatetime are too slow on large vectors of data. I was surprised just
until I looked at the implementation and the man page: "ISOdatetime and
ISOdate are convenience wrappers for strptime". In other terms, they
convert data to character representation first in order to create a
POSIXlt object that is then
2005 Oct 07
3
Converting PROC NLMIXED code to NLME
Hi,
I am trying to convert the following NLMIXED code to NLME, but am
running into problems concerning 'Singularity in backsolve'. As I am new
to R/S-Plus, I thought I may be missing something in the NLME code.
NLMIXED
***********
proc nlmixed data=kidney.kidney;
parms delta=0.03 gamma=1.1 b1=-0.003 b2=-1.2 b3=0.09 b4=0.35 b5=-1.43
varu=0.5;
eta=b1*age+b2*sex+b3*gn+b4*an+b5*pkn+u;
2011 Aug 31
1
formatting a 6 million row data set; creating a censoring variable
List,
Consider the following data.
gender mygroup id
1 F A 1
2 F B 2
3 F B 2
4 F B 2
5 F C 2
6 F C 2
7 F C 2
8 F D 2
9 F D 2
10 F D 2
11 F D 2
12 F D 2
13 F D 2
14 M A 3
15 M A 3
16 M A 3
17
2003 Jun 26
2
Plots using POSIX
Is there a reason that the bottom axis changes color when POSIX data is used
in plot function?
For example:
> timedata <- c("2/3/2003","3/4/2003","5/4/2003")
> timedata2 <- strptime(timedata,format="%m/%d/%Y")
> numdata <- c(2,3,4)
> plot(as.POSIXct(timedata2),numdata,col="red",type="o")
As compared to:
>
2010 May 25
2
Relative Risk/Hazard Ratio plots for continuous variables
Dear all,
I am using Windows and R 2.9.2 for my analyses. I have a large dataset and
I am particularly interested in looking at time to an event for a continuous
variable. I would like to produce a plot of log(relative risk) or relative
risk (also known as hazard ratio) against the continuous variable.
I have spent a long time looking for advice on how to do this but my search
has proved
2009 Dec 10
1
Help with missing values in the dataset
Dear all,
I am facing problem with inserting the scheduled day of Observation
in the dataset. In the dataset I have only relative time (table 1) and not
scheduled day of observation (day 1, 4, 8, 15, 22, 29, 36, 43).
I would appreciate if any one could suggest me how to proceed.
Eg:
Table 1 The real dataset looks like this with Time, DV ... etc
RTime DV
1 101
4 95
8
2012 Apr 17
2
[LLVMdev] Issue with GetElementPtrInst in Instruction Combining pass
Hi All,
I have been having this issue, when I am enable Instruction Combining pass, for an application.
I have read similar post ealier,
http://old.nabble.com/Instruction-Combining-Pass-*Breaking*-Struct-Reads--td24253572.html
With reference to the above case, my target data layout is defined as:
DataLayout("e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-a:32:32")
Thus I don't see
2012 Apr 17
2
[LLVMdev] Issue with GetElementPtrInst in Instruction Combining pass
With reference to the previous query,
I think, i miscalculated the offset, just recalculating.
1. without instruction combining
coupling member variable, is at:
%struct._FRAME_DATA* %2, i32 0, i32 5
where "%2" is defined as:
%arrayidx3 = getelementptr inbounds i16* %Data, i32 1024, !dbg !446
%2 = bitcast i16* %arrayidx3 to %struct._FRAME_DATA*, !dbg !446
i.e. at 5 offset in
2005 Oct 06
2
isdst
Can someone, please, explain the difference is results below (notice
the isdst value)
> unlist(as.POSIXlt('2005-7-1'))
sec min hour mday mon year wday yday isdst
0 0 0 1 6 105 5 181 1
> unlist(as.POSIXlt(as.Date('2005-7-1')))
sec min hour mday mon year wday yday isdst
0 0 0 1 6 105 5 181 0
2008 Jul 28
2
Help with a loop
HI:
I need ideas on how to make this code shorter (maybe with a second loop?).
The code as it is works, but in this case I only have 14 samples, but it
will become insane with more, so I need a way to make it more automatic. The
problem is that the output from ts1, ts2, and so on is a vector with more
than one value, so I do not know how to solve this.
Thanks
Prenewbie
The code is the
2005 Jun 16
1
Sweave and sideways
Hi there,
I'm rying to 'turn' an Schunk in an .Rnw file(Xemacs-21.4.13, ESS-5.2.8,
R-2.1, miktex-2.4.1705).
Has anyone got the isorot package to work with Sweave?
JC
example test.Rnw:
\documentclass[a4paper]{article}
\usepackage{Sweave}
\usepackage{isorot}
\rotdriver{dvips}
\clockwise
\title{Sweave Example 1}
\author{apologies to Friedrich Leisch }
\begin{document}
\maketitle
2007 Oct 22
3
strsplit
Hello R Gurus:
I would like to take a character string and split at the $ sign.
I thought that strsplit would do it, but here are the results:
> vv
[1] "whine$ts1"
> vv
[1] "whine$ts1"
> strsplit(vv,"$")
[[1]]
[1] "whine$ts1"
Does anyone have any suggestions, please?
Thanks,
Edna Bell
2013 Apr 11
0
[PATCH] Btrfs-progs: enhance 'btrfs subvolume list'
"btrfs subvolume list" gets a new option "--fields=..." which allows
to specify which pieces of information about subvolumes shall be
printed. This is necessary because this commit also adds all the so
far missing items from the root_item like the received UUID, all
generation values and all time values.
The parameters to the "--fields" option is a list of items to
2004 Dec 13
2
read attribute
How can I get a single attribute value of an object ?
I jhave the tiemSeries object
> ts1
Open
2003-10-09 02:00:00 1.27
2003-10-10 02:00:00 1.25
2003-10-13 02:00:00 1.27
2003-10-14 02:00:00 1.29
When I unclass ts1 I get:
> unclass(ts1)
list()
attr(,"Data")
Open
2003-10-09 02:00:00 1.27
2003-10-10 02:00:00 1.25
2003-10-13 02:00:00 1.27
2005 Oct 31
1
how to optimise cross-correlation plot to study time lag between time-series?
Dear R-help,
How could a cross-correlation plot be optimized such that the relationship
between seasonal time-series can be studied?
We are working with strong seasonal time-series and derived a
cross-correlation plot to study the relationship between time-series. The
seasonal variation however strongly influences the cross-correlation plot
and the plot seems to be ?rather? symmetrical (max
2007 Mar 08
4
Introduction and patch
Hi,
I'm one of the people working on the Rockbox project
(http://www.rockbox.org) which is an open source alternative firmware
for a range Digital Audio Players. Recently we integrated support for
the Speex codec using libspeex and seems to work well. If you could add
Rockbox to your list of software that supports Speex, that'd be great.
So that's the introduction done. Now for
2013 Aug 06
1
Error in building pdf manual with Rtools
Dear list,
I am trying to produce a pdf manual using Rtools (version 3.1.0.1936) on Windows 8 (64-bit). I am also aware of the inconsolata issue posted in the forum (https://stat.ethz.ch/pipermail/r-devel/2013-June/066850.html), and then I have installed the patched version of R-3.0.1. However I still have some errors with the following message:
R CMD Rd2pdf mypack
Hmm ... looks like a package
2013 Aug 29
1
Calculation with Times Series
HI,
May be this helps:
?ts1<- ts(1:20)
?ts2<- ts(1:25)
ts1[-(1:3)]<- ts1[-(1:3)]+ts2[1:17]
?as.numeric(ts1)
# [1]? 1? 2? 3? 5? 7? 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37
A.K.
Hey everyone,
I`m an absolut beginner in R and need some help for an exercise:
I want to do ordinary calculations with 2 time series. The issue
with this, that I want to use different elements of time
2005 Nov 15
2
Subtracting timeseries objects
Sorry to keep posting but I want to do this right and I'm hoping for
some pointers
I now have two time series objects which I need to subtract.
Unfortunatly the two series dont have the same sample rates.
When I try to subtract them
avgSub<-avg1-avg2
The time series object is clever enough to object.
So I guess I need to write a function for subtraction of the time series
objects which
2003 Jan 28
2
Error from StructTS
Hi,
I used function StructTS some time ago to fit a structural model to a time
series.
Now with R 1.6.2-1 I repeated the analysis with the same series and I get the
following error:
Error in KalmanLike2(y, Z, -1) : invalid argument type
I tried with other series and I get the same error; I checked the examples in
the documentation and they work fine. I suspect I am missing something