Displaying 20 results from an estimated 2000 matches similar to: "Writing list object to a file"
2008 Jun 29
1
Calculating quarterly statistics for time series object
I have time series observation on daily frequencies :
library(zoo)
SD=1
date1 = seq(as.Date("01/01/01", format = "%m/%d/%y"), as.Date("12/31/02", format = "%m/%d/%y"), by = 1)
len1 = length(date1); data1 = zoo(matrix(rnorm(len1, mean=0, sd=SD*0.5), nrow = len1), date1)
plot(data1)
Now I want to calculate 1. Quarterly statistics like mean, variance etc
2008 Mar 10
1
Error in extracting monthly observation from a daily time series data
Hi all,
Suppose I have following dataset :
library(zoo)
SD = 1
date1 = seq(as.Date("01/01/90", format = "%m/%d/%y"), as.Date("12/31/08", format = "%m/%d/%y"), by = 1)
len1 = length(date1); data1 = zoo(matrix(rnorm(len1, mean=0, sd=SD*0.5), nrow = len1), date1)
Now I want to extract monthly observation.
obs =
2006 May 11
3
Please help me to combine two datasets.
Dear r-users,
Suppose I have two data sets
data set-1
Date height
------------------------
1/11/2005 10
2/11/2005 23
3/11/2005 54
4/11/2005 21
5/11/2005 22
data set-2
weight
--------
32
45
11
Now I want to combine this two data sets. i.e. i want to see:
Date height weight
-------------------------------------------
3/11/2005 54
2012 Nov 10
4
help on date dataset
Hi everybody,
I am beginer in R and I need your precious help.
I want to create a small function in R as in sas to retrieve date.
I have a file with data that import in R.
DATE PAYS nb_pays.ILI.
1 24/04/2009 usa 0
2 24/04/2009 usa 0
3 24/04/2009 Mexique 0
4 24/04/2009
2006 Feb 14
2
how I can perform Multivariate Garch analysis in R
Dear aDVISOR,
Hope I am not disturbing you. Can you tell me how I can perform Multivariate
Garch analysis in R. Also please, it is my humble request let me know some
resource materials on Multivariate Garch analysis itself.
Sincerely yours,
--
Arun Kumar Saha, M.Sc.[C.U.]
S T A T I S T I C I A N [Analyst]
Transgraph Consulting [www.transgraph.com]
Hyderabad, INDIA
Contact # Home:
2007 Jan 20
3
Insert R logo
Dear all R users,
I want to insert the R logo in every graphic that I made in my Statistical
analysis using R. Can anyone tell me whether is it possible or not and if
possible how to do this? your help will be highly appreciated.
Thanks and Regards,
Arun
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2007 Sep 18
5
Need help on "date"
Dear all,
I have a variable 'x' like that:
> x
[1] "2005-09-01"
Here, 2005 represents year, 09 month and 01 day.
Now I want to create three variables naming: y, m, and d such that:
y = 2005
m = 09
d = 01
can anyone tell me how to do that?
Regards,
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2013 Feb 19
1
data format
Hi,
Try this:
el<- read.csv("el.csv",header=TRUE,sep="\t",stringsAsFactors=FALSE)
?elsplit<- split(el,el$st)
?
datetrial<-data.frame(date1=seq.Date(as.Date("1930.1.1",format="%Y.%m.%d"),as.Date("2010.12.31",format="%Y.%m.%d"),by="day"))
elsplit1<- lapply(elsplit,function(x)
2013 Jan 04
2
Can you help me please
HI Fares,
You could try this:
dat1<- read.table(text="
date????? donation
3jan2003?? 20235
4jan2003?? 25655
5jan2003?? 225860
6jan2003?? 289658
7jan2003?? 243889
8jan2003?? 244338
9jan2003?? 243889
",sep="",header=TRUE,stringsAsFactors=FALSE)
The post is not very specific as to what you need.? I hope this works for you.
library(xts)
2013 Feb 13
3
date and matrices
Hi Elisa,
Try this:
date1<-format(seq.Date(as.Date("1991.1.1",format="%Y.%m.%d"),as.Date("1996.12.31",format="%Y.%m.%d"),by="day"),"%Y.%m.%d")
?length(date1)
#[1] 2192
mat1<-matrix(c(.314,.314,.273,.273,.236,.236,.236,.236,.273,.314,.403,.314),ncol=1)
res1<-
2008 Feb 27
3
Loading user defined functions autometically each time I start R
Hi all,
I wrote some user defined function for my own. Now I want to get a mechanism
so that every time I start R, those function will automatically be loaded in
R without manually copying pasting. Can gurus here pls tell me how to do
that? Or I have to build my own packages bundled with those functions.
However I am not familiar in writing R package yet.
Regards,
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2006 Jun 12
3
NA values
Dear all R users,
I am wondering whether there is any way to replace all "NA" values in a data
frame by some numerical value, suppose 1000?
Thanks and Regards
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2006 Aug 10
3
Geometrical Interpretation of Eigen value and Eigen vector
Dear all,
It is not a R related problem rather than statistical/mathematical. However
I am posting this query hoping that anyone can help me on this matter. My
problem is to get the Geometrical Interpretation of Eigen value and Eigen
vector of any square matrix. Can anyone give me a light on it?
Thanks and regards,
Arun
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2008 Apr 29
3
Simulation study in R
Here I am in a simulation study where I want to find different values
of x and y such that f(x,y)=c (some known constant) w.r.t. x, y >0,
y<=x and x<=c1 (another known constant). Can anyone please tell me how
to do it efficiently in R. One way I thought that I will draw
different random numbers from uniform dist according to that
constraints and pick those which satisfy f(x,y)=c. However
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 .
2007 Apr 26
2
Drawing Tangent
Dear all R-users,
I would like to draw a tangent of a given function for a particular (given)
point. However the straight line representing it should not cut any axis, it
should be a small line. Can anyone tell me how to do this?
Thanks,
Arun
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2006 Jun 12
2
Combinig two data frames
Dear all r-users,
Suppose I have two data frame:
A
1
3
4
5
2
and
B
5
6
3
5
Now I want combine this two data frames without losing any value from either
data frame. More precisely I want to see
A B
1 5
3 6
4 3
5 5
2 NA
I tried with cbind function but failed, as it only works when two data
frames have equal number of rows. Can anyone suggest me any code that can be
used for any
2013 Apr 13
2
Comparison of Date format
Hi,
?In the example you provided, it looks like the dates in Date2 happens first.? So, I changed it a bit.?
DataA<- read.table(text="
ID,Status,Date1,Date2 ??? ??? ??????
1,A,3-Feb-01,15-May-01 ??? ???
1,B,15-May-01,16-May-01 ??? ???
1,A,16-May-01,3-Sep-01 ??? ??? ??? ??? ???
1,B,3-Sep-01,13-Sep-01 ??? ??? ??? ??? ???
1,C,13-Sep-01,26-Feb-04 ??? ??? ??? ??? ???
2008 May 19
2
Converting variance covariance matrix to correlation matrix
Suppose I have a Variance-covariance matrix A. Is there any fast way to
calculate correlation matrix from 'A' and vice-versa without emplying any
'for' loop?
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2008 Jul 06
2
looking for alternative of 'if-else'
There is "if-else" loop if I have to choose 1 item from a 2-item list.
However if I have a list of 4 items (let say) then how i can choose a single
item without employing 'if-else' loop? I mean in VBA I can use
"select-case", is there any equivalent in R as well?
Regards,
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