Thanks, Wacek and Romain! Your solutions worked very well in RGui and
Rterm in interactive mode.
My final purpose was to obtain the file name of the postscript device
in Rweb (http://pbil.univ-lyon1.fr/Rweb/); now I found savehistory()
would not work because Rweb was non-interactive. I didn't real
Santosh wrote:
Dear useRs...
How do you all do binning of an independent variable using R? For example,
observations of a dependent variable at times different from a nominal time.
Are there any R functions that help with binning?
Have a look at ?cut.
--
Gad Abraham
MEng Student, Dept. CSSE
>From the help page for "Foreign"
> ?Foreign
Numeric vectors in R will be passed as type double * to C (and as double
precision to Fortran)
Also, see the help page for "double"
> ?double
R has no single precision data type. All real numbers are stored in double
precision format.
The f
Suppose I have two var x and y,now I want to fits a natural cubic
spline in x to y,at the same time create new var containing the
smoothed values of y. How can I get it?
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PL
If one enters:
??"spline"
... You get quite a few matches. The one in the stats functions that
probably answers your specific questions is:
"splinefun {stats} R Documentation
Interpolating Splines Description
Perform cubic (or Hermite) spline interpolation of g
Hi:
I use two monitors and I didn't have to do nothing to do what you want done.
Try to print an R graph then drag it to the second screen. If that doesn't
work, you may need to go to your settings and identify screen one and screen
two from the dialog box. Good luck
Felipe D. Carrillo
Super
Dear R users,
Thanks in advance.
I am Deb, Statistician at NSW Department of Commerce, Sydney.
I am using R 2.8.1 on Windows XP.
I like to save Trellis Plots on A3 size paper (Portrait and
Landscape).
Currently, I am using the following command to save a Trellis Plot in
pdf [This is an ex
On 30-Mar-09 23:04:15, kerfuffle wrote:
> hi folks,
>
> I was wondering if anybody could give me some advice. I've created
> a stacked barchart, with 'car model' along the x axis, 'number of
> cars' along the y axis. There are 45 individuals involved, each of
> which can own any number of cars, of
I am trying to install RMySQL on OpenSolaris and need to pass some options
to configure.
Tried the 3 recommended ways of doing it and nothing works, configure
cannot
find the headers and the libs.
I ran configure manually and that worked fine
./configureCC
I get to the video screen OK --- there's a large greenish sideways
triangle waiting to be clicked on. I do so; there's a message that
says it's downloading, with a little progress bar. That seems to
complete quite rapidly. Then nothing for a while. Then an error
message on the video screen sa
On 30-Mar-09 23:04:40, Jim Porzak wrote:
> Since Sundar beat me to it w/ Firefox 3 test, I checked with IE 7.0 -
> works fine for me there also.
>
> -Jim
Interesting! I'm using Iceweasel 2.0.0.19 (Firefox under another
name) on Linux. I'll have to check out what blocks it has activated!
I put on
Elaine Jones wrote:
I am running R version 2.8.1 on Windows XP OS.
When I launch R, I would like to automatically read a file containing my
database connections, user ids, and passwords into my workspace.
I tried including this in my Rprofile.site file:
...
local({
old <- getOption("defaultPa
I am running R version 2.8.1 on Windows XP OS.
When I launch R, I would like to automatically read a file containing my
database connections, user ids, and passwords into my workspace.
I tried including this in my Rprofile.site file:
...
local({
old <- getOption("defaultPackages")
options(def
Try Edit --> Gui Preferences --> SDI
and see if that works.
Dan Viar
Chesapeake, VA
On Mon, Mar 30, 2009 at 5:55 PM, Veerappa Chetty wrote:
> Hi, I have set up two monitors. I am using windows XP. I would like to keep
> one window- command line in one monitor and the script and graphs in the
>
hi folks,
I was wondering if anybody could give me some advice. I've created a
stacked barchart, with 'car model' along the x axis, 'number of cars' along
the y axis. There are 45 individuals involved, each of which can own any
number of cars, of any model (eg an individual could own two cars o
Hi, I have set up two monitors. I am using windows XP. I would like to keep
one window- command line in one monitor and the script and graphs in the
second monitor. How do I set it up?
It works for word documents simply by dragging the document. It does not
work if I drag and drop the scripts wind
Hi, I am looking for a specific mapping capability in R that I can't seem to
find, but think exists. I would like to make a border of a map have alternating
black and white squares instead of the common latitude and longitude grid.
(example: http://www.cccturtle.org/sat_maps/map0bw8.gif). If an
Since Sundar beat me to it w/ Firefox 3 test, I checked with IE 7.0 -
works fine for me there also.
-Jim
On Mon, Mar 30, 2009 at 4:00 PM, Sundar Dorai-Raj wrote:
> Could be that you have some sort of ad filter in your browser that's
> blocking the video? It appears just fine for me in Firefox
Hi
Felipe Carrillo wrote:
> Hi: I need help with geom_text().
> I would like to count the number of Locations
> and put the sum of it right above each bar.
>
> x <- "Location Lake_dens Fish Pred
> Lake1 1.132 1 0.115
> Lake1 0.627 1 0.148
> Lake1 1.324
Could be that you have some sort of ad filter in your browser that's
blocking the video? It appears just fine for me in Firefox 3.
On Mon, Mar 30, 2009 at 3:55 PM, Ted Harding
wrote:
> On 30-Mar-09 22:13:04, Jim Porzak wrote:
>> Next week Wednesday evening, April 8th, Mike Driscoll will be talkin
Dear R users:
Suppose I have two different response variables y1, y2 that I regress
separately on the different explanatory variables, x1 and x2 respectively. I
need to compare points on two regression lines.
These are the x and y values for each lines.
x1<-c(0.5,1.0,2.5,5.0,10.0)
y1<-c(204,4
On 30-Mar-09 22:13:04, Jim Porzak wrote:
> Next week Wednesday evening, April 8th, Mike Driscoll will be talking
> about "Building Web Dashboards using R"
> see: http://www.meetup.com/R-Users/calendar/9718968/ for details & to
> RSVP.
>
> Also of interest, our member Ron Fredericks has just posted
Dear Abu,
I'm not sure why you're addressing this question to me.
It's unclear from your description whether there is one sample with four
variables or two independent samples with the same two variables x and y. I'll
assume the latter. The formula that you sent appears to assume equal error
v
Many thanks to Deepayan for providing just what I wanted.
I've tried lwd many times and it does not work but lex does
the trick. Thanks also to Paul Murrell for his very simple
suggestion of using lower case o for an open circle since
bold works on letters and to Bert Gunter for suggesting an
overp
Help with tm assocation analysis and Rgraphviz installation.
THANK YOU IN ADVANCE
Question 1:
I saved two txt file in C:\textfile
And each txt file contents only one text column, and both have 100 records.
I know term research occurs 49 times, so I want to find out which other
words are
On Sun, Mar 29, 2009 at 12:35 PM, Naomi B. Robbins
wrote:
> In lattice, using the command trellis.par.get for superpose.symbol, plot,
> symbol and/or dot.symbol shows that we can specify alpha, cex, col, fill
> (for superpose.symbol and plot.symbol), font, and pch. Trial and error
> shows that t
Next week Wednesday evening, April 8th, Mike Driscoll will be talking
about "Building Web Dashboards using R"
see: http://www.meetup.com/R-Users/calendar/9718968/ for details & to RSVP.
Also of interest, our member Ron Fredericks has just posted a well
edited video of the February kickoff panel di
Hello.
We have some questions concerning the statistical analysis of a dataset.
We aim to compare the sample means of more than 2 independent samples; the
sample sizes are unbalanced. The requirements of normality distribution and
variance homogeneity were not met even after transforming the data
Thanks Paul, I tried to use ..count.. once but it didn't work. What I realized
I was missing 'stat="bin"'. Thanks for your help.
--- On Mon, 3/30/09, Paul Murrell wrote:
> From: Paul Murrell
> Subject: Re: [R] ggplot2-geom_text()
> To: mazatlanmex...@yahoo.com
> Cc: r-h...@stat.math.ethz.ch
Dear Terry,
When I hit cumic function (my saved command, it used to work previously), R
was suddenly shut down. Therefore, there is no error message. This happened
not only on my PC (window, service pack 3) but also on others from my
colleagues.
Regards
Nguyen Nguyen
-Original Message-
Fr
On Mon, Mar 30, 2009 at 2:58 PM, Mike Lawrence wrote:
> I discovered Hadley Wickham's "plyr" package last week and have found
> it very useful in circumstances like this:
>
> library(plyr)
>
> firstfixtime = ddply(
> .data = data
> , .variables = c('Sub','Tr','IA')
> , .fun <- fu
> As our package developers discussed about incompatibility between Design and
survival packages, I faced another problem with cmprsk- a survival dependent
packacge.
> The problem is exactly similar to what happened to the Design package that
when I just started running cuminc function, R was s
Bert Gunter wrote:
>
> Serves me right, I suppose. Timing seems also very dependent on the
> dimensions of the matrix. Here's what I got with my inadequate test:
>
>
>> x <- matrix(rnorm(3e5),ncol=3)
>>
> ## via apply
>
>> system.time(apply(x,1,max))
>>
>user system elapsed
Thank you Mike and Dimitris for your replies.
I was able to get Mike's command to work and it does what I want (and fast
too!) I hadn't looked into the plyr package at all, but I have seen it load
when loading the reshape package. (Another useful package for manipulating
data frames!)
Thanks agai
I discovered Hadley Wickham's "plyr" package last week and have found
it very useful in circumstances like this:
library(plyr)
firstfixtime = ddply(
.data = data
, .variables = c('Sub','Tr','IA')
, .fun <- function(df){
df$FixTime[which.min(df$FixInx)]
}
one way is:
ind <- ave(Data$IA, Data$Sub, Data$Tr, FUN = function (x) !duplicated(x))
Data[as.logical(ind), ]
I hope it helps.
Best,
Dimitris
jwg20 wrote:
I'm having difficulty finding a solution to my problem that without using a
for loop. For the amount of data I (will) have, the for loop
I'm having difficulty finding a solution to my problem that without using a
for loop. For the amount of data I (will) have, the for loop will probably
be too slow. I tried searching around before posting and couldn't find
anything, hopefully it's not embarrassingly easy.
Consider the data.frame
Hi,
I am looking for a way to analyze a dataset with a circular dependent
variable and three independent factors. To be specific, the circular
variable comprises of arrival times of pollinators to flowers. The
independent variables are pollinator species, flower sex and locality. I
have failed to f
Michael Lawrence wrote:
On Sat, Mar 28, 2009 at 6:08 PM, zubin wrote:
Hello, we are writing rich internet user interfaces and like to call R for
some of the computational needs on the data, as well as some creation of
image files. Our objects communicate via the SOAP interface. We have been
There are some examples of reading files into sqlite on the
sqldf home page:
http://sqldf.googlecode.com
On Mon, Mar 30, 2009 at 12:19 PM, Stephan Lindner wrote:
> Dear all,
>
>
> I'm trying to import a csv file into sqlite3 and from there into
> R. Everything looks fine exepct that R outputs t
Apparently, the convergence is faster if one uses this new swap function:
swapfun <- function(x,N=100) {
loc <- c(sample(1:(N/2),size=1,replace=FALSE),sample((N/2):100,1))
tmp <- x[loc[1]]
x[loc[1]] <- x[loc[2]]
x[loc[2]] <- tmp
x
}
It seems that within 20 millions of iterations, one gets th
Hi: I need help with geom_text().
I would like to count the number of Locations
and put the sum of it right above each bar.
x <- "Location Lake_dens Fish Pred
Lake1 1.132 1 0.115
Lake1 0.627 1 0.148
Lake1 1.324 1 0.104
Lake1 1.265
On 3/30/2009 12:46 PM, Vadlamani, Satish {FLNA} wrote:
Hi:
1) Does anyone have experience with 64 bit compiled version of R on windows? Is
this available or one has to compile it oneself?
2) If we do compile the source in 64 bit, would we then need to compile any
additional modules also in 64 b
Dear Costantino,
> -Original Message-
> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On
> Behalf Of Analisi Dati
> Sent: March-30-09 11:13 AM
> To: r-help@r-project.org
> Subject: [R] HELP WITH SEM LIBRARY AND WITH THE MODEL'S SPECIFICATION
>
> Dear users,
> i'
On Mon, Mar 30, 2009 at 6:01 AM, Irene Gallego Romero wrote:
> Dear all,
>
> I have some very big data files that look something like this:
>
> id chr pos ihh1 ihh2 xpehh
> rs5748748 22 15795572 0.0230222 0.0268394 -0.153413
> rs5748755 22 15806401 0.0186084 0.0268672 -0.367296
> rs2385785 22 1580
On Mon, Mar 30, 2009 at 10:33 AM, Mike Lawrence wrote:
> To repent for my sins, I'll also suggest that Hadley Wickham's "plyr"
> package (http://had.co.nz/plyr/) is also useful/parsimonious in this
> context:
>
> a <- ldply(cust1_files,read.table)
You might also want to do
names(cust1_files) <-
Hi:
1) Does anyone have experience with 64 bit compiled version of R on windows? Is
this available or one has to compile it oneself?
2) If we do compile the source in 64 bit, would we then need to compile any
additional modules also in 64 bit?
I am just trying to prepare for the time when I will
Dear Ivo, dear list,
(see: Message: 70
Date: Thu, 26 Mar 2009 21:39:19 +
From: ivo...@gmail.com
Subject: [R] pgmm (Blundell-Bond) sample needed)
I think I finally figured out how to replicate your supersimple GMM
example with pgmm() so as to get the very same results as Stata.
Having no other
Dear all,
I'm trying to import a csv file into sqlite3 and from there into
R. Everything looks fine exepct that R outputs the character values in
an odd fashion: they are shown as "\"CHARACTER\"" instead of
"CHARACTER", but only if I show the character variable as a
vector. Does someone know why
Dear users,
i'm using the sem package in R, because i need to improve a confermative factor
analisys.
I have so many questions in my survey, and i suppose, for example, that
Question 1 (Q1) Q2 and Q3 explain the same thing (factor F1), Q4,Q5 and Q6
explain F2 and Q7 and Q8 explain F3...
For ch
Conference on Quantitative Social Science
Research Using R
June 18-19 (Thursday-Friday), 2009, Fordham University, 113 West 60th
Street, New York. (next door to Lincoln Center for Performing Arts).
conf. website: http://www.cis.fordham.edu/QR2009
Hrishikesh (Rick) D. Vinod
Professor of Economic
Dear all,
Does anybody know how to get more evaluation points in performing Nonparametric
analysis of repeated measurements data with "sm" library. The following command
gives the estimation for 50 points, by I would like to increase to 100 points
But I do not know how to do that.
library(sm)
pro
Optim with SANN also solves your example:
---
f <- function(x) sum(c(1:50,50:1)*x)
swapfun <- function(x,N=100) {
loc <- sample(N,size=2,replace=FALSE)
tmp <- x[loc[1]]
x[loc[1]] <- x[loc[2]]
x[loc[2]] <- tmp
x
}
N <- 100
opt1 <-
optim(fn=f,par=sam
I don't know how to help with the Unicode issue, but one alternative is the
my.symbols function in the TeachingDemos package (see ?ms.male as well as
?my.symbols).
Hope this helps,
--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.s...@imail.org
801.408.8111
On Sat, Mar 28, 2009 at 6:08 PM, zubin wrote:
> Hello, we are writing rich internet user interfaces and like to call R for
> some of the computational needs on the data, as well as some creation of
> image files. Our objects communicate via the SOAP interface. We have been
> researching the var
Dear Peter, Jim and all,
Thanks for the information regarding how to structure 'assign' commands. I've
had a go at doing this, based on your advice, and although I feel I'm a lot
closer now, I can't quite get it to work:
rnames <- sprintf("%.2f", seq(from = -89.75, to = 89.75, length = 360))
c
To repent for my sins, I'll also suggest that Hadley Wickham's "plyr"
package (http://had.co.nz/plyr/) is also useful/parsimonious in this
context:
a <- ldply(cust1_files,read.table)
On Mon, Mar 30, 2009 at 9:32 AM, baptiste auguie wrote:
> may i suggest the following,
>
>
> a <- do.call(rbind,
Two authors appear to be the same as of the book "Analysis of Means" (ANOM),
which I read and has a website at http://www.analysisofmeans.com/
If I remember correctly, Mr. Nelson is deceased, but you might nevertheless
reach Mrs. Copeland following the Contact Us link at the ANOM website, which
with very good examples of statistical visualization.
"Talks Hans Rosling: Debunking third-world myths with the best stats you've
ever seen"
http://www.ted.com/index.php/talks/hans_rosling_shows_the_best_stats_you_ve_ever_seen.html
--
View this message in context:
http://www.nabble.com/Excel
How about you include a thread like
"Problem with R 2.3.0 and MySQL on Mandriva-2007".
Bests,
milton
On Mon, Mar 30, 2009 at 7:07 AM, ankhee dutta wrote:
> Hi, All
> I have a linux system of Mandriva-2007 with R version 2.3.0 and MySQL with
> 5.0.0. I have also got DBI-R database interface ve
Hello R users
I have question about the time involved in list assignment.
Consider the following code snippet(see below). The first line creates
a reader object,
which is the interface to 1MM key-value pairs (serialized R objects) spanning 50
files (a total of 50MB). rhsqstart initiates the reading
Serves me right, I suppose. Timing seems also very dependent on the
dimensions of the matrix. Here's what I got with my inadequate test:
> x <- matrix(rnorm(3e5),ncol=3)
## via apply
> system.time(apply(x,1,max))
user system elapsed
2.090.022.10
## via pmax
> system.time(do.cal
The window you describe is not one I would call sliding and the
intervals are regular with an irregular number of events within the
windows. One way would be to use the results of trunc(pos/1) as a
factor with tapply:
(Related functions are floor() and round(), but your pos values appea
Hello alltogheter,
I have the following problem and maybe someone can help me with it.
I have a list of values with times. They look like that:
V1 V2
1 2008-10-14 08:45:00 94411.08
2 2008-10-14 08:50:00 90745.45
3 2008-10-14 08:55:00 82963.35
4 2008-10-14
I have been examining the text "Introductory Statistics for
Engineering Experimentation" by Peter R. Nelson, Marie Coffin and
Karen A.F. Copeland (Elsevier, 2003). There are several interesting
data sets used in the book and I plan to create an R package for them.
I would like to contact the surv
Actually, one can use lpSolve to find a solution to your example. To
be more precise, it would be necessary to solve a sequence of linear
*integer* programs. The first one would be:
max f(x)
subject to
x >= 0
x <= 100
sum(x) = 100.
>From this, one would learn the optimal position of the number
Hi Damien,
How did you install the package? Usually this error pops up when people
simply download the zip file and then unzip into their library directory.
If you use the package installation functions in R, you shouldn't have
this problem:
install.packages("pls")
Best,
Jim
mienad wro
Thank you very much for all your comments, and sorry for the confusion
of my messages. My corpus is a collection of responses to an open
question from a questionnaire. Since my intention is not to create
groups of respondents but to treat all responses as a "whole
discourse" on a particular
Hi Patrick,
there exist specialized functionality in R that offer both automated
calculation of
starting values and relatively robust optimization, which can be used with
success in many
common cases of nonlinear regression, also for your data:
library(drc) # on CRAN
## Fitting 3-parameter lo
consider the following example:
(f = function() on.exit(f()))()
# error: evaluation nested too deeply
(f = function() { on.exit(f()); stop() })()
# error in f():
# error in f():
# ... some 100 lines skipped ...
# error: C stack usage is too close to the limit
why does
Image you want to minimize the following linear function
f <- function(x) sum( c(1:50, 50:1) * x / (50*51) )
on the set of all permutations of the numbers 1,..., 100.
I wonder how will you do that with lpSolve? I would simply order
the coefficients and then sort the numbers 1,...,100 accord
Dear all,
I have some very big data files that look something like this:
id chr pos ihh1 ihh2 xpehh
rs5748748 22 15795572 0.0230222 0.0268394 -0.153413
rs5748755 22 15806401 0.0186084 0.0268672 -0.367296
rs2385785 22 15807037 0.0198204 0.0186616 0.0602451
rs1981707 22 15809384 0.0299685 0.017676
rkevinbur...@charter.net wrote:
> I am sorry but I don't see the connection. with SANN and say 3
> variables one of the steps may increment x[1] by 0.1. Not only is
> this a non-discrete integer value but even if I could coerce SANN to
> only return discrete integer values for each step in the opti
Steve Murray wrote:
> Dear all,
>
> Apologies for yet another question (!). Hopefully it won't be too tricky to
> solve. I am attempting to add row and column names (these are in fact
> numbers) to each of the tables created by the code (120 in total).
>
>
> # Create index of file names
> file
I do not really understand your argument regarding the non-linearity
of f. Perhaps, it would help us a lot if you defined concretely your
objective function or gave us a minimal example fully detailed and
defined.
Paul
On Mon, Mar 30, 2009 at 1:16 PM, wrote:
> It would in the stictess sense be
Michael Dewey wrote:
> At 05:07 30/03/2009, Aaron M. Swoboda wrote:
>> I would like to know which rows are duplicates of each other, not
>> simply that a row is duplicate of another row. In the following
>> example rows 1 and 3 are duplicates.
>>
>> > x <- c(1,3,1)
>> > y <- c(2,4,2)
>> > z <- c(3,
may i suggest the following,
a <- do.call(rbind, lapply(cust1_files, read.table))
(i believe expanding objects in a for loop belong to the R Inferno)
baptiste
On 30 Mar 2009, at 12:58, Mike Lawrence wrote:
cust1_files =
list.files(path=path_to_my_files,pattern='cust1',full.names=TRUE)
a
Dear all,
Apologies for yet another question (!). Hopefully it won't be too tricky to
solve. I am attempting to add row and column names (these are in fact numbers)
to each of the tables created by the code (120 in total).
# Create index of file names
files <- print(ls()[1:120], quote=FALSE)
It would in the stictess sense be non-linear since it is only defined for
descrete interface values for each variable. And in general it would be
non-linear anyway. If I only have three variables which can take on values
1,2,3 then f(1,2,3) could equal 0 and f(2,1,3) could equal 10.
Thank you f
Maybe not terribly hard, depending on exactly what you need. Suppose you
turn your text into a character vector 'mytext' of words. Then for a
table of words appearing delta words apart (ordered), you can table mytext
against itself with a lag:
nwords=length(mytext)
burttab=table(mytext[-(1:d
oops, didn't read the question fully. If you want to create 2 master files:
cust1_files = list.files(path=path_to_my_files,pattern='cust1',full.names=TRUE)
a=NULL
for(this_file in cust1_files){
a=rbind(a,read.table(this_file))
}
write.table(a,'cust1.master.txt')
cust2_files = list.files(pa
Dear R-Community,
since I work on a PC at the University I have not the necessary rights for all
devices and therefore my library is located on a net device. The installation
process worked and everything is right apart from one little thing - the help
files. When I try to search with the funct
my_files = list.files(path=path_to_my_files,pattern='.txt',full.names=TRUE)
a=NULL
for(this_file in my_files){
a=rbind(a,read.table(this_file))
}
write.table(a,my_new_file_name)
On Sun, Mar 29, 2009 at 10:37 PM, Qianfeng Li wrote:
>
>
> how to input multiple .txt files?
>
> A data fol
Hi, All
I have a linux system of Mandriva-2007 with R version 2.3.0 and MySQL with
5.0.0. I have also got DBI-R database interface version-0.1-11 installed on
my Linux system.While installing RMySQL package version 0.5-11 but facing
the problem mentioned below .
* Installing *source* package 'R
Hi, All
I have a linux system of Mandriva-2007 with R version 2.3.0 and MySQL with
5.0.0. I have also got DBI-R database interface version-0.1-11 installed on
my Linux system.While installing RMySQL package version 0.5-11 but facing
the problem mentioned below .
* Installing *source* package 'R
Hi,
I am using R 2.8.1 version on Windows with RGui. I have loaded pls package
lattest version (2.1-0). When I try to load this package in R using
library(pls) command, the following error message appear:
Erreur dans library(pls) :
'pls' n'est pas un package valide -- a-t-il été installé < 2
At 05:07 30/03/2009, Aaron M. Swoboda wrote:
I would like to know which rows are duplicates of each other, not
simply that a row is duplicate of another row. In the following
example rows 1 and 3 are duplicates.
> x <- c(1,3,1)
> y <- c(2,4,2)
> z <- c(3,4,3)
> data <- data.frame(x,y,z)
x y
On Sun, Mar 29, 2009 at 9:45 PM, wrote:
> I have an optimization question that I was hoping to get some suggestions on
> how best to go about sovling it. I would think there is probably a package
> that addresses this problem.
>
> This is an ordering optimzation problem. Best to describe it wit
jibleriz...@yahoo.com wrote:
I run lm to fit an OLS model where one of the covariates is a factor with 30
levels. I use contr.treatment() to set the base level of the factor, so when I
run lm() no coefficients are estimated for that level. But in addition (and
regardless of which level I choos
Jim and all,
Thanks - I managed to get it working based on your helpful advice.
I'm now trying to do something very similar which simply involves changing the
names of the variables in column 1 to make them more succinct. I'm trying to do
this via the 'levels' command as I figured that I might
I noticed taht R cannot understand certain Fortran real constant formats. For
instance:
c14<- as.double( 7.785205408500864D-02)
Error: unexpected symbol in " c14<- as.double( 7.785205408500864D"
The above "D" is used in Fortran language to indicate the memory starage mode.
That is for
> Bert Gunter wrote:
>
>> "Note that these operations do not match their index arguments in the
>> standard way: argument names are ignored and positional matching only is
>> used. So m[j=2,i=1] is equivalent to m[2,1] and not to m[1,2]. "
>>
>> ## Note that the next lines immediately following
Bert Gunter wrote:
> Folks:
>
> I do not wish to agree or disagree with the criticisms of either the speed
> or possible design flaws of "[". But let's at least see what the docs say
> about the issues, using the simple example you provided:
>
>
> m = matrix(1:9, 3, 3)
> md = data.frame(m)
Rolf Turner wrote:
> I tried the following:
>
> m <- matrix(runif(10),1000,100)
> junk <- gc()
> print(system.time(for(i in 1:100) X1 <- do.call(pmax,data.frame(m
> junk <- gc()
> print(system.time(for(i in 1:100) X2 <- apply(m,1,max)))
>
> and got
>
>user system elapsed
> 2.704 0.
> "TG" == Tal Galili
> on Sun, 29 Mar 2009 03:09:17 +0300 writes:
TG> Hello Martin Maechler and All,
TG> A simple question (I hope):
TG> How can I compute the "sum of the dissimilarities" that appears in the
pam
TG> command (from the cluster package) ?
TG> Is it
Hi
r-help-boun...@r-project.org napsal dne 30.03.2009 05:17:35:
> In a data frame I have a column "date" and a column "time",now I want
> to generate a new column which is the mean of the value of time group
> by date. In stata the command is
>
> egen scalls = mean(time),by(date)
>
> but I don'
Benjamin, Dimitris,
Thanks very much. Neat work!
Murali
-Original Message-
From: Nutter, Benjamin [mailto:nutt...@ccf.org]
Sent: 27 March 2009 13:52
To: MENON Murali; r-help@r-project.org
Subject: RE: [R] adding matrices with common column names
Shucks, Dimitris beat me to it. And his c
Dear list,
I have a general problem that I really don't know how to solve efficiently
in R. Lets say we have a sequence of things, like for instance a string of
words, that is stored in a file. We need all the words in a table format, so
therefore we create an id for the word, that links the word
Dear list,
I really appreciate previous suggestion about self organizing map. I tried
to perform SOM analyses with kohonen, som and class packages, but it's not
clear to me if these packages are complete to: 1) cluster neurons according
to their similarities (U-matrix); 2) assign to SOM neurons va
On Mon, Mar 30, 2009 at 7:12 AM, D wrote:
> Hi,
>
> I would need some help with the splans package in R.
>
> I am using a Shapefile (downloadable at)
> http://rapidshare.com/files/215206891/Redlands_Crime.zip
>
> and the following execution code
>
>
> setwd("C:\\Documents and
> Settings\\Dejan\\De
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