Displaying 20 results from an estimated 300 matches similar to: "pakages"
2007 Sep 04
3
how to do interpolation
Hello R Users,
How to make a variable equidistance with time i.e. how to interpolate a
variable if it is not sampled at equal time interval.
Many thanks,
Regards,
Yogesh
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2007 May 10
4
Value at Risk
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2007 Jul 26
5
ROC curve in R
Hi,
I need to build ROC curve in R, can you please provide data steps / code
or guide me through it.
Thanks and Regards
Rithesh M Mohan
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2007 May 09
3
Removing a list of Objects
Hi,
I have a simple beginner's question on removing a list of
objects. Say I have objects C243.Daily1, C243.Daily2...C243.Daily5 in my
workspace. I'd like to remove these without using rm five times.
So I write.
> a <- list(paste("C243.Daily",sep="",1:5))
> rm(a)
Obviously this wouldn't work, as it would only remove the object a.
But is there any way
2007 May 14
6
Conditional Sums for Index creation
Hi,
Apologies for the long mail. I have a data.frame with columns of
price/mcap data for a portfolio of stocks, and the date. To get the
total value of the portfolio on a daily basis, I calculate rowSums of
the data.frame.
> set.seed(1)
> ab <- matrix(round(runif(100)*100),nrow=20,ncol=5)
> ab[1:5,4:5] <- NA
> ab[6:10,5] <- NA
> ac <- as.data.frame(ifelse(ab <=
2007 Jul 25
2
Regarding Bivariate normal distribution.
Dear all R gurus,
My question is related to statistics rather directly to R. Suppose
(X,Y) has a bivariate normal distrubution. I want to find two values
of X and Y say x, and y respectively, such that:
P[X<x, Y<y] = 0.05
My questions are :
1. Can x and y be uniquely found?
2. If it is, how I can find them using R
Your help will be highly appreciated.
Thanks and regards,
2007 Apr 09
1
How to solve differential and integral equation using R?
Hello,
I want to know if there are some functions or packages to solve differential
and integral equation using R.
Thanks.
Shao chunxuan.
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2009 Jun 23
1
Cannot install pakages from Bioconductor besides the default installation
I am running the last R version on SuSE 11.1.
I installed the Bioconductor environment following the instructions on the web. As a consequence some
core packages from Bioconductors were installed.
I need to add some more packages. So I tried biomaRt as follows.
It does not get installed correctly.
Please see the following sequence.
Thank you in advance.
Maura
>
2007 Jul 16
3
R and Copula
hi,
first I want to say that I'm new here, and new with copula and R.
That is the reason why I'm writing, if somebody can help me.
I have to make an example of Copula.
On internet I've found this forum and that copula can calculate with R.
Can somebody help me with the thing how can I start and where can read about
these stuffs.
Thank to all who can help!
--
View this message
2007 Aug 08
2
cointegration analysis
Hello,
I tried to use urca package (R) for cointegration analysis. The data
matrix to be investigated for cointegration contains 8 columns
(variables). Both procedures, Phillips & Ouliaris test and Johansen's
procedures give errors ("error in evaluating the argument 'object' in
selecting a method for function 'summary'" respectiv "too many
variables,
2007 May 10
3
Getting the last day of the month.
Hi,
Given a date, how do I get the last date of that month? I have
data in the form YYYYMM, that I've read as a date using
> x$Date <-
as.Date(ISOdate(substr(x$YearEnd,1,4),substr(x$YearEnd,5,6),1))
But this gives the first day of the month. To get the last day of the
month, I tried
> as.Date(as.yearmon(x$Date,frac=0))
But I don't get the last day of the month here. (Tried
2006 Oct 28
0
ALARM!!!! Re: regarding large csv file import
hi All,
ok fine got it. The design of R is such that it will work only if data
fits in the main memory. This issue has been taken up many times but it
seems it would be very difficult to change the core code hmmm. ok fine.
hence if i want to work then i will have to either partition the data or
work with columns.
thanks to you all
- Sayonara With Smile & With Warm Regards :-)
G a u
2006 Oct 28
0
ALARM!!!! Re: regarding large csv file import
hi All,
ok fine got it. The design of R is such that it will work only if data
fits in the main memory. This issue has been taken up many times but it
seems it would be very difficult to change the core code hmmm. ok fine.
hence if i want to work then i will have to either partition the data or
work with columns.
thanks to you all
- Sayonara With Smile & With Warm Regards :-)
G a u
2007 Oct 27
1
problems in cross validation of SVM in pakage "e1071"
Hi:
I am a newer in using R for data mining, and find the "e1071" pakage an excellent tool in doing data mining work!
what frustrated me recently is that when I using the function "svm" and using the "cross=10" parameters, I got all the "accuracies" of the model greater than 1. Isn't that the accuracy should be smaller than 1? so I wander how, the
2005 Aug 24
2
samba pakage update
Hello,
I want to update my samba server 3.0.7 - Suse 9.2 pro.
Before I' m destroying my whole smb/ldap configuration,
I ask the NG.
Can I use an 3.0.13 rpm samba, samba-client package?
And what's about the smb.conf after updating?
Many thanks in advance
Andreas
2005 Nov 08
3
The problem with rcom pakage
I have the problem with rcom 1.2.2 package. It does't work with R 2.2.0.
Is there any opportunities to correct the work of this package?
Thanks for your help.
Yulia
2005 Nov 14
2
Using pakage foreign and to import SAS file
Hi,
I'm struggling with foreign to import a SAS file. The file, for lack of imagination, is d.sas7bdat and is in my root directory (c:\) under Windows XP. When I type
read.ssd("c:\\", "d")
which I think I'm suppose to enter, I get
SAS failed. SAS program at C:\DOCUME~1\Owner\LOCALS~1\Temp\Rtmp32758\file19621.sas
The log file will be file19621.log in the current
2009 May 16
1
maxLik pakage
Hi all;
I recently have been used 'maxLik' function for maximizing G2StNV178 function with gradient function gradlik; for receiving this goal, I write the following program; but I have been seen an error in calling gradient function;
The maxLik function can't enter gradlik function (definition of gradient function); I guess my mistake is in line ******** ,that the vector ‘h’ is
2007 Jan 31
7
features of save and save.image (unexpected file sizes)
Hi,
Today I came upon unexpected R behaviour. I did some modelling and the
result was R object, about 28MB size (nested list, with matrixes as
list elements). When I was saving the session with save.image, the
resulting .RData file was 300MB. There were no other large objects:
>
2007 Apr 20
1
Error en R
Mrs and Mr
My operative system is "Windows Vista" and can't update or install pakages of CRAN, the message for all pakages is for example:
Erro en zip.unpack(pkg, tmpDir) : no fue posible abrir el archivo 'C:/Program Files/R/R-2.4.1pat/library/file8f653c7/MASS/chtml/MASS.chm'
Help me
thank you!
Post data: Sorry my bad English
Roberto Mario Domínguez Olivero
Universidad