Displaying 20 results from an estimated 1700 matches similar to: "Strange R object"
2010 Jun 16
1
cut takes long time
The following cut command takes nearly 10 seconds on my machine even
though the length of input vector is only 6. I am running on Windows
Vista with C2D BLAS using R 2.11.1. Using the default BLAS and either
R 2.10.1 or "R version 2.12.0 Under development (unstable) (2010-05-31
r52164)" also gives me results in the 9-11 second range.
I would have expected it to take much less time.
2009 Mar 12
1
zooreg and lmrob problem (bug?)
Hi all and thanks for your time in advance,
I can't figure out why summary.lmrob complains when lmrob is used on a
zooreg object. If the zooreg object is converted to vector before
calling lmrob, no problems appear.
Let me clarify this with an example:
>library(robustbase)
>library(zoo)
>dad<-c(801.4625,527.2062,545.2250,608.2313,633.8875,575.9500,797.0500,706.4188,
2007 Aug 02
1
Using 'diff' on zoo vs zooreg classes (possible bug?)
Hello,
Can anyone explain the following behaviour? To me it seems a bug, but maybe
it is intentional.
It seems that a diff on a zooreg class that is not _strictly_ regular only
considers those entries that are 'deltat' apart.
In the following, diff on the zooreg class only returns values where the
index was one second apart. The example replicates by dev code, but I've
also tested
2011 Apr 06
2
A zoo related question
Dear all, please consider my following workbook:
library(zoo)
lis1 <- vector('list', length = 2)
lis2 <- vector('list', length = 2)
lis1[[1]] <- zooreg(rnorm(20), start = as.Date("2010-01-01"), frequency = 1)
lis1[[2]] <- zooreg(rnorm(20), start = as.yearmon("2010-01-01"), frequency =
12)
lis2[[1]] <- matrix(1:40, 20)
lis2[[2]] <-
2005 Aug 27
2
zoo, zooreg, & ISOdatetime
I create a zooreg object that runs from Jan-1-2002 0:00 to Jun-1-2005
0:00...
regts.start = ISOdatetime(2002, 1, 1, hour=0, min=0, sec=0, tz="")
regts.end = ISOdatetime(2005, 6, 1, hour=0, min=0, sec=0, tz="")
regts.zoo <- zooreg( NA, regts.start, regts.end, deltat=3600 )
Upon inspection:
> regts.zoo[1:3]
2002-01-01 00:00:00 2002-01-01 01:00:00 2002-01-01 02:00:00
2010 Nov 23
2
Plot two zoo object with different indexes
Dear R community, I have the following two zoo objects:
MONTHLY CPI
> plot(z)
> par("usr")
[1] 1977.76333 2011.15333 70.39856 227.03744
> z=zooreg(cpius$Value,as.yearmon("1979-11"),frequency=12)
> str(z)
?zooreg? series from Nov 1979 to Oct 2010
Data: num [1:372] 76.2 77 77.8 78.5 79.5 80.3 81.1 82 82 82.6 ...
Index: Class 'yearmon' num [1:372]
2013 Sep 09
2
(sin asunto)
No he podido crear una matriz con dos columnas una de fechas y la otra
columna con números de casos de una enfermedad x
library(zoo)
zooreg(1:300, start = as.Date("2012-03-01"))
cbind(zooreg(1:300, start = as.Date("2012-03-01")) , c(1:300)) #?como
incluir un vector o una ts?
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2009 Nov 19
2
Problem with zoo and BootPR packages
Hi,
I'm trying to plot the forecasts I generated using the Plot.Fore function of the BootPR package.
But I got an error from zoo:
My data:
Time Series:
Start = 1
End = 18
Frequency = 1
[1] 38731 38628 39117 92809 71984 31226 58613 72360 107956 92066
[11] 95208 99098 95848 120383 110717 105680 98469 101916
Script:
y1<-ts(y1);
2011 Jan 18
1
Semi-Regular Time Series with Missing Values
Hi,
I'm trying to make a ts object that has both NA values and a frequency other
than 1 (so I can use stl). I've tried all permutations I can think of, but
cannot get the desired (expected?) results.
The values live in x and the corresponding semi-regular time stamps are in
t:
> library('zoo')
> z = zoo(x, order.by=t, frequency=24)
> zzr = as.zooreg(z, start=0)
> zr
2011 Sep 22
2
Subsetting a zooreg object using window / subset
Dear R users,
I am currently working in subsetting a zooreg() object using either window or subset. I have a solution but it may be a bit cumbersome when I start working with actual data. Your inputs would be greatly appreciated.
Example: I have a zooreg() object that starts in 1997 and ends in 2001. This object contains daily data for the 4 years
2013 Jun 08
1
Need help on window() function of the 'zoo' package
Hi,
I observed that if I use window() function available with the 'zoo' package to extract a portion of my times series and if that time series data is stored in some 'zoo' object with only 1 column, then the resulting zoo object is becoming vector.
Here is my observation:
> library(zoo)
> Dat <- matrix(1:3, nc = 1)
> Dat
[,1]
[1,] 1
[2,] 2
[3,] 3
2015 Jun 12
3
pregunta
Estimados
?como se puede llevar el archivo que adjunto a vector?
necesito hacer lo siguiente con el archivo a
library(zoo)
x <- c (1,3,1,1,1,1,2,1,1,2,1,1,2,1,1,1,2,1,2,2,1,1,1,3,1,1,2,2,2,2,1,1,1,2,1,1,1,1,1,2,2,5,1,1,1,1,2,1,1,1,2,4,1,2,1,3,1,1,1,1,3,1,2,1,1,3,1,3,3,1,2,1,2,2,2,3,1,2,1,1,1,1,2,1,1,1,1,1,1)
names(x) <- format(index(zooreg(1:89, start =as.Date("2015-01-01"))),
2007 Jul 31
1
A complicated 'aggregate'
Hi,
I have a financial (zoo) time series with prices and volumes (although I can
get the coredata as a matrix). Due to the data-source some indices have
multiple observations. I want to aggregate these according to a weighted
average.
11:00:01 34 1000
11:00:01 35 500
11:00:01 35 1000
11:00:02 34 500
11:00:02 35 500
should become
11:00:01 34.6 2500
11:00:02 34.5 1000
I currently do this
2010 Apr 18
4
confused with yearmon, xts and maybe zoo
R-listers,
I am using xts with a yearmon index, but am getting some inconsistent
results with the date index when i drop observations (for example by using
na.omit).
The issue is illustrated in the example below. If I start with a monthly
zooreg series starting in 2009, yearmon converts this to "Dec-2008". Not
such a worry for my example, but strange. Having converted to xts, i drop
2010 Jul 13
3
Need help on index for time series object
Dear all,
Please forgive me if there is a duplicate post; my previous mail perhaps didnt reach the list.......
Let say I have following time series
library(zoo)
> dat1 <- zooreg(rnorm(10), start=as.Date("2010-01-01"), frequency=1)
> dat1[c(3, 7,8)] = NA
> dat1
2010-01-01 2010-01-02 2010-01-03 2010-01-04 2010-01-05 2010-01-06 2010-01-07 2010-01-08 2010-01-09
2007 Sep 20
1
Time series graphs, question about using zoo
Hi,
Can you tell me what is the meaning for "tail, 1" in "aggregate"?
I also want to get some similar graph, but the data is not time series data.
Suppose here is my data one, I want a graph with x-axis is just the
index(1:9).
The graph plot all the variable A, B,C,D. So there should be 4 lines for
each graph. For the A line, at each time point, the letter A should be on
2010 Apr 08
2
Meaning of "lag 0.2, 0.4,..." ?
Please see that correlogram for a arbitrary time series :
acf(zooreg(rnorm(39), start=as.yearmon("2008-01-01"), frequency=12))
What is the meaning of lag 0.2, 0.4, ........ in the plot? Those should not
be integers? Or I am missing something?
Thanks
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2012 Nov 25
2
creation of an high frequency series
Hi R Users!
I would like to create an high frequency series but I am experiencing some
difficulties.
My series should start at 09.30 a.m. each day and end at 16.00 for, let's
say, 2 years. I don't care on how many observations are for each day. It's
ok also one observation each minute. In this case, I would have 390
observations each day.
I have tried the following:
start <-
2010 Jan 01
1
Chainging monthly data to daily data
Hi, I have a zoo object with monthly frequency :
library(zoo)
dat <- zooreg(rnorm(50), as.yearmon("2000-01-01"), frequency=12)
Now I want to make a zoo object with daily frequency from "dat" wherein
value for a each day for a particular month will be value of "dat" at that
particular month.
Is there any easy way to do that?
Thanks,
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2006 Nov 23
1
Problem with as.ts(zoo-object)
Dear all,
I have an error message, when I try to convert a zoo object (called
test) to ts (on R 2.4.0, Package zoo version 1.2-1, Windows XP)
> test
1994-05-10 1994-06-09 1994-07-09
0.0024943889 0.0024881824 0.0006955831
> str(test)
atomic [1:3] 0.002494 0.002488 0.000696
- attr(*, "index")=Class 'Date' num [1:3] 8895 8925 8955
> is.regular(test)
[1] TRUE