Displaying 20 results from an estimated 148 matches for "dorai".
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doran
2009 Jan 17
2
DierckxSpline segfault
...d)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace
Selection:
---
Package: DierckxSpline
Type: Package
Title: R companion to "Curve and Surface Fitting with Splines"
Version: 1.1-2
Date: 2007-7-31
Author: Sundar Dorai-Raj
Maintainer: Sundar Dorai-Raj <sundar.dorai-raj at pdf.com>
Description: This package provides a wrapper to the FITPACK routines
written by Paul Dierckx. The original Fortran is
available from http://www.netlib.org/dierckx
License: GPL (>= 2)
Dep...
2008 Oct 30
3
using yscrollcommand in tkcanvas crashes R (PR#13231)
Full_Name: Sundar Dorai-Raj
Version: 2.8.0
OS: Windows
Submission from: (NULL) (76.220.41.126)
The following code crashes R:
library(tcltk)
tt <- tktoplevel()
tc <- tkcanvas(tt, yscrollcommand = function(...) tkset(ts, ...))
> sessionInfo()
R version 2.8.0 (2008-10-20)
i386-pc-mingw32
locale:
LC_COLLATE=En...
2004 Sep 30
1
Vectorising and loop (was Re: optim "a log-likelihood function")
>From: Sundar Dorai-Raj <sundar.dorai-raj at PDF.COM>
>Reply-To: sundar.dorai-raj at PDF.COM
>To: Zhen Pang <nusbj at hotmail.com>
>CC: r-help at stat.math.ethz.ch
>Subject: Vectorising and loop (was Re: [R] optim "a log-likelihood
>function")
>Date: Wed, 29 Sep 2004 18:21:17 -...
2004 May 19
7
Help with hclust() and plot()
Hi
When I use plot(hclust(dist..)...)...) etc to create a dendrogram of a
hierarchial cluster analysis, I end up with a vertical tree. What do I
need to do to get a horizontal tree?
Also, my users are used to seeing trees who's leaves all "end" at the
same place (eg. Like in minitab). Is this possible in R?
Thanks
Mick
Michael Watson
Head of Informatics
Institute for Animal
2005 May 05
6
Need some quick help with lattice - barchart
For the following code below, the x-axis ticks are 1,2,3,4,5,6,7 when I was expection them to be 1,2,8,9,10,11,12. Please help me figure out where is the mistake.
library(lattice)
testdata <- as.data.frame(t(structure(c(
1,2005,9.24,6.18,634,
2,2005,8.65,6.05,96,
8,2004,6.81,6.51,16,
9,2004,9.0,7.29,8,
10,2004,8.84,6.18,524,
11,2004,8.54,6.35,579,
12,2004,9.97,6.3,614,
12,2005,8.75,5.84,32,
2006 Jul 28
3
scatter plot with axes drawn on the same scale
Dear useRs,
I'd like to produce some scatter plots where N units on the X axis are
equal to N units on the Y axis (as measured with a ruler, on screen or
paper). This approach
x <- sample(10:200,40) ; y <- sample(20:100,40)
windows(width=max(x),height=max(y))
plot(x,y)
is better than plot(x,y) but doesn't solve the problem because of the
other parameters (margins etc). Is
2003 Feb 06
5
options(chmhelp = TRUE)
Hi all,
Here's a curosity I ran into since upgrading to 1.6.2 (precompiled
for Windows). When using the chm help I get the following warning. I saw
a recent post regarding this as a new warning (``dyn.load warning
message in R1.6.2 on Windows XP'' dated 1/28/03), but not in the context
of the help system. The warning only appears once and does not prevent
the chm file from
2004 Jan 27
8
distance between two matrices
Hi all,
Say I have a matrix A with dimension m x 2 and matrix B with
dimension n x 2. I would like to find the row in A that is closest to
the each row in B. Here's an example (using a loop):
set.seed(1)
A <- matrix(runif(12), 6, 2) # 6 x 2
B <- matrix(runif(6), 3, 2) # 3 x 2
m <- vector("numeric", nrow(B))
for(j in 1:nrow(B)) {
d <- (A[, 1] - B[j, 1])^2 + (A[,
2002 Apr 22
2
lattice help
...orm i386-pc-mingw32
arch x86
os Win32
system x86, Win32
status
major 1
minor 4.0
year 2001
month 12
day 19
language R
Thanks,
Sundar
--
Sundar Dorai-Raj, Ph.D.
Statistical Methods Engineer
PDF Solutions, Inc.
(972) 889-3085 x216
(214) 392-7619 cell
sundard at pdf.com
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", &...
2007 May 02
4
upgrade to 2.5
Hi I am using R version 2.4.1. How can I upgrade to version 2.5 without having to install all the packages again?
Thanks
Jason
Dr. Iasonas Lamprianou
Department of Education
The University of Manchester
Oxford Road, Manchester M13 9PL, UK
Tel. 0044 161 275 3485
iasonas.lamprianou@manchester.ac.uk
___________________________________________________________
now.
[[alternative HTML
2004 Aug 20
3
How generate "A01", "A02", ..., "A99"?
Hi,
Anyone can tell me how to generate "A01", "A02", ..., "A99"?
paste("A", 1:99, sep="") generates "A1", "A2",..., "A99". This is not what I want.
Thanks for the help.
-MY
[[alternative HTML version deleted]]
1999 Mar 16
0
(Fwd) How to use smbsh utility in samba
...tility called smbsh
using which users can use the resources in Windows clients from Unix
prompt like local resources . Unfortunately I dont have man pages or
any other document as to how to make use of this utility .
Any help regarding how to use this utility will be appreciated
TIA
Cheers
-Dorai
*************************************************
OFFICE * RESIDENCE
*************************************************
Dorairaj V * Dorairaj V
(Senior Engineer -Software * 273-A Basavanpura Road
CEC-STAR Group , NDF )...
2009 Jul 30
3
update.formula and backticked colons
I just noticed the following in update.formula and I'm wondering if
this behavior is the intention of the developers. Here's an example:
update(`a: b` ~ x, ~ . + y)
Note now that the response has no backticks and is interpreted as a:b
(i.e. ":" is now an operator). This is because in update.formula the
call to terms.formula uses simplify = TRUE. I'm working with data that
2007 May 30
5
determining a parent function name
Hi, All,
I'm writing a wrapper for stop that produces a popup window using tcltk.
Something like:
error <- function(...) {
msg <- paste(..., sep = "")
if(!length(msg)) msg <- ""
if(require(tcltk, quiet = TRUE)) {
tt <- tktoplevel()
tkwm.title(tt, "Error")
tkmsg <- tktext(tt, bg = "white")
tkinsert(tkmsg,
2004 Oct 25
2
Revision: post on Intro to R lecture
...ee if it got corrected now (I do not have firefox yet in my computer, so no way of knowing whether it works), and please let me know. Also, made some changes and reformatted the original slides to make them other browser compatible, thanks to comments from Gabor Grothendiek, Stuart Lesk, and Sundar Dorai-Raj.
Here is the URL again:
http://www.aloofhosting.com/arinbasu/Rintroweb.htm
/Arin Basu
[[alternative HTML version deleted]]
2002 Apr 22
2
lattice x(y)lab and expression
...ip.default(strip.names=c(F,F),...)
},
par.strip.text=list(col="white",font=7),
xlab=expression(rho), # this is ignored
ylab=expression(f[r]*group("(",rho,")")) # this is ignored
df=test.df,as.table=T)
--
Sundar Dorai-Raj, Ph.D.
Statistical Methods Engineer
PDF Solutions, Inc.
(972) 889-3085 x216
(214) 392-7619 cell
sundard at pdf.com
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", &...
2004 Sep 29
2
optim "a log-likelihood function"
Hello,
i know that i have to use optim, but i'm confused how its
possible maximize the sum over all l[i] and get the optimized
max(LL), r and alpha?
LL <- function(trans,time){
for(i in 1:length(trans){
l[i] <- log(lgamma(r+trans[i] -
gamma(r+1)*(alpha/alpha+t[i]))**r)*(t[i]/alpha+t[i]))**trans[i]
}
return(sum(l))
}
i'm confused how i have to set r and alpha
and i
2005 Aug 17
3
do glm with two data sets
I have two data sets:
File1.txt:
Name id1 id2 id3 ...
N1 0 1 0 ...
N2 0 1 1 ...
N3 1 1 -1 ...
...
File2.txt:
Group id1 id2 id3 ...
G1 1.22 1.34 2.44 ...
G2 2.33 2.56 2.56 ...
G3 1.56 1.99 1.46 ...
...
I like to do:
x1<-c(0,1,0,...)
y1<-c(1.22,1.34, 2.44, ...)
2004 Sep 14
3
reshaping some data
Hi all,
I have a data.frame with the following colnames pattern:
x1 y11 x2 y21 y22 y23 x3 y31 y32 ...
I.e. I have an x followed by a few y's. What I would like to do is turn
this wide format into a tall format with two columns: "x", "y". The
structure is that xi needs to be associated with yij (e.g. x1 should
next to y11 and y12, x2 should be next to y21, y22, and
2004 Nov 01
2
stacking imported data
Hi all,
I have a question that I don't have a good answer for (note the word
"good"; I have an answer, but I consider it not "good"). Take the
following data in a single tab-delimited text file:
<text>
A
Labels Value SE 2.5% 97.5%
R90 0.231787 1.148044 0.035074 1.531779
R0 0.500861 0.604406 0.185336 1.353552
B
Labels Value SE 2.5% 97.5%
(Intercept) 1.367514