Displaying 20 results from an estimated 20000 matches similar to: "Time series graphs"
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
2007 Sep 21
0
Time series graphs, question about using zoo [SEC=UNCLASSIFIED]
Hi Fang,
An easy way of doing this is by:
> matplot(one, pch = LETTERS[1:4], type = 'b')
Cheers Joe
Joe Crombie
Information and Risk Sciences
Bureau of Rural Science
Canberra Australia
p: +61 2 6272 5906
e: joe.crombie at brs.gov.au
-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of fang liu
Sent: Friday,
2010 Jul 12
3
How to create sequence in month
Hi all, can anyone please guide me how to create a sequence of months? Here
I have tried following however couldn't get success
> library(zoo)
> seq(as.yearmon("2010-01-01"), as.yearmon("2010-03-01"), by="1 month")
Error in del/by : non-numeric argument to binary operator
What is the correct way to do that?
Thanks for your time.
2017 Oct 06
2
Time series: xts/zoo object at annual (yearly) frequency
Hi,
I'd like to make a time series at an annual frequency.
> a<-xts(x=c(2,4,5), order.by=c("1991","1992","1993"))
Error in xts(x = c(2, 4, 5), order.by = c("1991", "1992", "1993")) :
order.by requires an appropriate time-based object
> a<-xts(x=c(2,4,5), order.by=1991:1993)
Error in xts(x = c(2, 4, 5), order.by =
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 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]
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]] <-
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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2009 Sep 25
3
Problem on plotting TS using GGPLOT
Hi, I have following codes :
library(zoo); library(ggplot2); library(plyr)
dat <- rnorm(306); vv <- letters[1:6]; dat1 <- data.frame(dat, vv)
dat2 = zooreg(rnorm(51), as.yearmon(as.Date("2000-01-01")), frequency=12)
ggplot(dat1) +
geom_line(aes(y=dat, x=index(dat2), colour=vv), group=vv, size =
1.3)
However I got error while plotting them :
2006 Oct 12
3
ts vs zoo
> Hello,
>
> I have lots of data in zoo format and would like to do some time
> series analysis. (using library(zoo), library(ts) )
>
> My data is usually from one year, and I try for example stl() to find
> some seasonalities or trends.
>
> I have now accepted, that I might have to convert my series into ts()
> but still I am not able to execute the comand since
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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2010 Apr 21
4
Converting daily data series to monthly series
Hi Users,
I have daily series of data from 1962 - 2000, with the data for February
29th in leap years excluded, leaving 365 daily values for each year. I
wish to convert the daily series to monthly series. How can I do this using
the zoo package or any other package?
Thanks
ZABLONE OWITI
GRADUATE STUDENT
Nanjing University of Information, Science and Technology
College of International
2011 Sep 08
1
Seasonal and 11-day subset for zoo object
I have a zooreg object and I want to be able to generate a value for seasons
and 11-day composites paste it onto my zoo data frame, along with year,
month and days.
Right now I have the following to work from:
eg. dat.zoo.mdy <- with(month.day.year(time(dat.zoo)), cbind(dat.zoo, year,
month, day, quarter = (month - 1) %/% 3 + 1, dow =
as.numeric(format(time(dat.zoo), "%w"))))
For
2009 Apr 27
2
series at low freq expanded into high freq
Folks,
If I have a series mm of, say, monthly observations, and a series dd of
daily dates, what's a good way of expanding mm such that corresponding
to each day in dd within the corresponding month in mm, the values of mm
are repeated?
So e.g., if I have mm:
mm <- c(15, 10, 12, 13, 11)
names(mm)<-c("Nov 2008", "Dec 2008", "Jan 2009", "Feb
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
2009 Apr 15
2
From daily series to monthly and viceversa
I have the following daily exchange rate series (from january 1st 1996 to
december 31st 2008) and I want to obtain them monthly series from it. I've
read about the 'zoo' library but I'm not getting it how to do it. These are
the data (left column day-month-year, right column the index)
31/12/1993 1,12509
03/01/1994 1,12509
04/01/1994 1,12558
05/01/1994 1,1258
06/01/1994 1,12596
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 <-
2009 Jul 01
1
A problem on zoo object
I have a zoo object on daily data for 10 years. Now I want to create a list,
wherein each member of that list is the monthly observations. For example,
1st member of list contains daily observation of 1st month, 2nd member
contains daily observation of 2nd month etc.
Then for a particular month, I want to divide all observations into 3 parts
(arbitrary) and then want to calculate some statistics
2010 Aug 11
2
Sweeping a zoo series
Given a long zoo matrix, the goal is to "sweep" out a statistic from the
entire length of the
sequences.
longzoomatrix<-zoo(matrix(rnorm(720),ncol=6),as.yearmon(outer(1900,seq(0,length=120)/12,"+")))
cnames<-c(12345,23456,34567,45678,56789,67890)
colnames(longzoomatrix)<-cnames
longzoomatrix[1:24,]
12345 23456 34567 45678
2011 Oct 27
2
Simple time series question with zoo
New user here. My goal is pull daily averages from a long dataset.
I've been working with some code I got from this list from
https://stat.ethz.ch/pipermail/r-help/2009-March/191302.html
The code how I have been using it is as follows:
library(zoo)
library(chron)
DB<-read.table("/Users/me/Desktop/R/data.csv", sep=",", header=TRUE, as.is
=TRUE)
z<-zoo(LTER6$temp,