I believe R as a package has everything people with little knowledge of
programming can handle quite easily. Moreover even if someone has no
programming knowledge can learn R without much effort.
I also believe if people in corporate world start using R instead of
other complex software which are
I have a data frame with unequal rows length separated by comma.I
have to read the data first and then calculate number of comma in each
row...how can I do that
Regards Rahul
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Apologies Roger, if you find anything wrong with the mail.
Thanks for the reference Roger.
IS there anything else which I can look at, say something in R itself?
Regards and thanks once again
Rahul Agarwal
Analyst
Equities Quantitative Research
UBS_ISC, Hyderabad
On Net: 19 533 6363
-
Hi Roger,
As we know that The Oja median has (finite) breakdown point 2/n, i.e.,
is not robust in any reasonable sense, and is quite expensive to
compute, so do we have some better methodology to compute multivariate
median
Rahul Agarwal
Analyst
Equities Quantitative Research
UBS_ISC, Hyder
> Hi,
>
> I am trying to run a code in Excel using VBA from R, using
> Rexcel.but everytime I am getting this error.
Error - 2147220502 in module Recel.Rserver
Error running expression
Eval(parse(text="setwd(\"H:\\
> I am using R-2.8.0 and R.2.7
> Please help.
>
>
>
> << OLE Object
Please refer to Introduction to probability and statistics by Rohatgi
and Saley
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Sohail
Sent: Wednesday, November 12, 2008 5:57 PM
To: R-help@r-project.org
Subject: [R] Big O, little o
Sorry for misusing
Thanks a lot...I realised where I was going wrongif I declare debug
= F then my problem is getting solved.
-Original Message-
From: jim holtman [mailto:[EMAIL PROTECTED]
Sent: Wednesday, November 12, 2008 9:12 AM
To: Agarwal, Rahul-A
Cc: r-help@r-project.org
Subject: Re: [R] Debu
I am getting this error could any one tell me why?
if(debug) cat("rahul")
Error in if (debug) cat("rahul") :
argument is not interpretable as logical
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PLEASE do read the
Also I wud like to add that in this addin the rput command never works
Rahul Agarwal
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of David Seres
Sent: Friday, October 24, 2008 2:46 PM
To: r-help@r-project.org
Subject: [R] R D COM Excel Add-Ins
Hell
Hi, Sorry for the confusion but I am looking to use R for regression
trees.
My query is stated below and I am not able to understand how can I use
tree library in this case
Rahul Agarwal
Analyst
Equities Quantitative Research
UBS_ISC, Hyderabad
On Net: 19 533 6363
-Original Message-
Hi,
Can some one help me in this project. I would like to initiate a
project using CART. For example for NIFTY 50 stocks the first node could
be cheap or expensive based on PE (Price Earning) with 2 subsequent
nodes for earnings certainty and return on assets.
Can anyone tell me how to go ahe
i have tried the code.
The first function (which computes the Oja median) has a slight problem:
If you try four points that create a square centred at (2,2)
oja.median(cbind(c(1,3,1,3),c(1,1,3,3)))
gives (-2,-2) instead of (2,2). Probably just a sign switch somewhere.
The second function
Rahul Agarwal
Analyst
Equities Quantitative Research
UBS_ISC, Hyderabad
On Net: 19 533 6363
hi let me explain you the problem
we have a database which is in this format
Stocks 30-Jan-08 28-Feb-08 31-Mar-08 30-Apr-08
a1.003.007.003.00
Why m I getting this message
data=read.table("H:/Rahul/london/david/rexcel/price1.txt",header=T,check.names=F,row.names=1)
Error in read.table("H:/Rahul/london/david/rexcel/price1.txt", header = T, :
duplicate 'row.names' are not allowed
Rahul Agarwal
Analyst
Equities Quantitative Researc
Hi
What if I need to take dates and stock names from these table...i mean I need
to read in this table and then use if function and extratc the data from FOO
Identifier weight Start_Date End_Date
a 6.7631Jan06 31Jan07
g 2.8628Feb06 28Feb07
e 22.94 31Mar06 30M
Bang on!!
Thanks for the help
Rahul Agarwal
Analyst
Equities Quantitative Research
UBS_ISC, Hyderabad
On Net: 19 533 6363
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Philipp Pagel
Sent: Tuesday, October 07, 2008 2:52 PM
To: r-help@r-projec
Hi I don't want to ignore the date row.
See basically my first row is the date column and the 1st column is the
stocks name.
Now using the if loop I have to find prices of stocks corresponding to a
date.
I hope the problem is clear to you now
For example
Stocks 30-Jan-08 28-Feb-08
Hi,
I have a data in which the first row is in date format and the first
column is in text format and rest all the entries are numeric. Whenever
I am trying to read the data using read.table, the whole of my data is
converted in to the text format.
Please suggest what shall I do because
Hi
Could any one help me to code tukey half space depth and directinal
quantile regression in R
Rahul Agarwal
Analyst
Equities Quantitative Research
UBS_ISC, Hyderabad
On Net: 19 533 6363
-Original Message-
From: roger [mailto:[EMAIL PROTECTED]
Sent: Friday, September 19, 2008
Thanks a lot Martin.
I would definitely like to know more about calculating multivariate
median.
It would be better if I can get some method where I can calculate the
median using functions in R.
Will wait for your reply
Thanks
Rahul Agarwal
Analyst
Equities Quantitative Research
UBS_ISC, Hyd
Hi Richard,
Thanks for the code.but I already have a code for bivariate data...I
want it for data when it is multivariate or its dimension is greater
than two...i mean to say if it is trivariate or higher dimensioncan
I get a more generalised form of oja median code
Thanks and Regards
Hi,
Can we get the code for calculating Oja median for multivariate data
Thanks and Regards
Rahul Agarwal
Analyst
Equities Quantitative Research
UBS_ISC, Hyderabad
On Net: 19 533 6363
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