search for: xt1

Displaying 11 results from an estimated 11 matches for "xt1".

Did you mean: x11
2008 Sep 04
1
Building a time series.
I have a need to build a time series and there are a couple of aspects about the time series object that are confusing me. First it seems that ts.union is not doing what I would expect. For example: x0 <- rep(0,10) x1 <- rep(1,10) xt0 <- ts(x0, frequency=10) xt1 <- ts(x1, frequency=10) st2 <- ts.union(xt0, xt1) > xt2 Time Series: Start = c(1, 1) End = c(1, 10) Frequency = 10 xt0 xt1 1.0 0 1 1.1 0 1 1.2 0 1 1.3 0 1 1.4 0 1 1.5 0 1 1.6 0 1 1.7 0 1 1.8 0 1 1.9 0 1 > spectrum(xt2) Error in plot.windo...
2005 May 23
3
Dickey-Fuller Test
Hi All , Could you please tell using which library ,Dickey-Fuller Test can be run? Thanks a lot __________________________________________________ [[alternative HTML version deleted]]
2013 Mar 07
2
xts time series object removing time and leaving just the date
I have and XTS time series object that has date and time. I started with 1 minute data and used apply.daily(x, sum) to sum the data to one cumulative value. This function works just fine however it leaves a time for the last summed value which looks like this 2006-07-19 14:58:00. I need to just have the date and to remove the time value of 14:58:00 just leaving the date value of 2006-07-19 .
2013 Jun 28
0
Help with tables
...algebra.core.formulae 46 TRUE 03/01/2013 11:29 03/01/2013 214173 fdp.percentage_calc_foundation 146 TRUE ",sep="",header=TRUE,stringsAsFactors=FALSE) ?dat2<- data.frame(timestamp=as.POSIXct(paste(dat1[,1],dat1[,2]),format="%m/%d/%Y %H:%M"), dat1[,-c(1:2)]) ?library(xts) xt1<- xts(dat2[,-1],dat2[,1]) library(stringr) ##1st part ?nrow(xt1["2013-03-01 11:15/2013-03-01 11:28"]) #[1] 46 ##2nd part table(xt1["2013-03-01 11:15/2013-03-01 11:28","topic"]) # #??????? algebra.core.equations????????? algebra.core.formulae #???????????????????...
2013 Jul 04
2
how to choose dates data?
i have converted my data into date format like below: > day=as.Date(originaldate,"%m/%d/%Y") > day[1:5] [1] "2008-04-12" "2011-07-02" "2011-09-02" "2008-04-12" "2008-04-12" I wish to select only those observations from 2007 to 2009, how can I select from this list? [[alternative HTML version deleted]]
2006 Jun 12
1
cumulative time durations of specified periods (chron)
...1/03/70 18:00:00) (01/07/70 06:00:00) (01/10/70 18:00:00) [4] (01/14/70 06:00:00) and we would like to know how much time is included in a number of intervals within each event. We can define the intervals with two chron vectors: R> (xt0 <- times(c(0.50, 0))) [1] 12:00:00 00:00:00 R> (xt1 <- times(c(1 - (1 / 86400), 0.25))) [1] 23:59:59 06:00:00 So for the first event, 01/02/70 06:00:00 to 01/03/70 18:00:00, the interest is to find how much time corresponds to periods 12:00:00 - 23:59:59 and 00:00:00 - 06:00:00. I began writing a function to accomplish this task, but am at an...
2013 Jun 23
1
Scaling Statistical
Short question: Is it possible to use statistical tests, like the Augmented Dickey-Fuller test, in functions with for-loops? If not, are there any alternative ways to scale measures? Detailed explanation: I am working with time-series, and I want to flag curves that are not stationary and which display pulses, trends, or level shifts. >df DATE ID VALUE2012-03-06 1
2013 Sep 26
1
R not ploting lines in the correct order
Hi, I have a set of x, y points where x represents dates and y actual values. I am trying to plot a line graph of the data with points on top, but R is connecting the wrong points with lines. Does anyone know how I can rectify this. Please see sample below: x= 24/09/2009 09:13 16/10/2009 11:17 24/10/2009 21:43 11/09/2009 18:34 22/08/2009 15:45 10/08/2009 00:30 14/08/2009 14:52 24/09/2009
2001 Nov 14
0
OPEN ssh pkg
...*I234A57,L MDT$S:QX!->D._^$?')I@<PS @(U)-F& V;Q13M.I0<VU63(Y'LJ,6 %3>&TZ M.V.\4IZ^K!#/DC6)M:H& E(@ $*<MI*&P36YAB+P at B0D@U+*#2JUU/+V5B:F M5(BP9C<$GSN .=^"T0DT&$-C- G?<">6E)_ 3"#Q.O@)AO,DT<)H\4Q^005, M#!70.F\#")"%)&-XT1-_L1Q<$WU8 SJ,9U2F.$4B<N,_83 YQZ3HG,X ,&VE MCG%LPB%5GC8_HUK(&]-95%<S1,I-NLD335?$&F)?[(E-*!*R#OU=LL"-E(?! MS"'ZR?,TIW2(:V- at K>D\TUD44:=]1'S64W_.3R=0/TV7Y\QJ9#!%L4S4*2;O M)P+-G_*S?68ET3EP).CI=$\'M"@DT S*/\=8T-!K W2"@M#B^8<VFQ/$;@\4 MJD70AT()...
2008 Jun 30
4
Rebuild of kernel 2.6.9-67.0.20.EL failure
Hello list. I'm trying to rebuild the 2.6.9.67.0.20.EL kernel, but it fails even without modifications. How did I try it? Created a (non-root) build environment (not a mock ) Installed the kernel.scr.rpm and did a rpmbuild -ba --target=`uname -m` kernel-2.6.spec 2> prep-err.log | tee prep-out.log The build failed at the end: Processing files: kernel-xenU-devel-2.6.9-67.0.20.EL Checking
2013 Nov 27
0
Inquiry for Zinc ingots
Dear Manager, Wish you have a nice day! We are the manufacture and exporter of Zinc ingots. Should this item be of interest to you, please feel free to contact me. Thanks, Sunshine Hebei Xingtai chemical Technology Co. ,Ltd Web:http://www.hbxthg.com -------------- next part -------------- An HTML attachment was scrubbed... URL: