[R] Reducing augmented matrices

2010-01-19 Thread jshort
Hi How does one tell R that one is using an augmented matrix as appose to an non-augmented matrix? For instance, when I want to solve two equations in two unknowns, I will have to solve a 2 by 3 augmented matrix, however all I know to type into R is something like this; weights = c(1,2,3,4,5,6

Re: [R] R arithmetic probability plot

2010-01-19 Thread Dennis Murphy
Hi: For a normal probability plot, use qqnorm(). Example: x <- rnorm(50) qqnorm(x) qqline(x) See the help page ?qqnorm for customization options. HTH, Dennis On Tue, Jan 19, 2010 at 11:09 PM, Natalia Slobodina wrote: > I am hoping to create a graph that will look like it is plotted on >

[R] R arithmetic probability plot

2010-01-19 Thread Natalia Slobodina
I am hoping to create a graph that will look like it is plotted on arithmetic probability plot. Something similar to how this is done in Excel: http://peltiertech.com/Excel/Charts/ProbabilityChart.html. I can't quite find a code that will transform the linear axis into a cumulative percent axis wi

[R] Please Please Please Help me!!

2010-01-19 Thread Madhavi Bhave
Dear R helpers   (I have already written the required R code which is giving me correct results for a given single set of data. I just wish to wish to use it for multiple data.)   I have defined a function (as given below) which helps me calculate Macaulay Duration and Modified Duration and its

Re: [R] Run time error when executing sqlQuery using the 64-bit version of R with 64-bit RODBC package in a Solaris 10 Sparc machine.

2010-01-19 Thread Eric Ma
I am having the exact same error, and the suggested work-around does not help. My env is: 64-bit SUSE Linux v 10.1 on Xeon processors. gcc and gfortran version is 4.1.2 64-bit R 2.10.1 compiled from soure using CC="gcc -m64" etc. 64-bit unixODBC driver manager 2.2.14 compiled from source Orac

Re: [R] A question

2010-01-19 Thread David Winsemius
On Jan 19, 2010, at 11:17 PM, Ron_M wrote: Hi all, I have a expression like that : rep(2,4) [1] 2 2 2 2 > paste(rep(2,4), sep="", collapse="") [1] "" Now I want to write it as "" through some automated way. Is there is function for doing that? I have tested with paste(), but

Re: [R] could we use ":" to represent multiple matrice in a list or sequential chracter names

2010-01-19 Thread Dennis Murphy
Hi: The : operator is meant for numeric sequences; see ?':' On Tue, Jan 19, 2010 at 7:57 PM, rusers.sh wrote: > Hi, > I know we can use 1:10 to represent the 1,2,3,...,10 numbers, but the > following conditions are except. > Anybody knows how to represent the following two cases with similar

Re: [R] could we use ":" to represent multiple matrice in a list or sequential chracter names

2010-01-19 Thread David Winsemius
On Jan 19, 2010, at 10:57 PM, rusers.sh wrote: Hi, I know we can use 1:10 to represent the 1,2,3,...,10 numbers, but the following conditions are except. Anybody knows how to represent the following two cases with similar usage of ":" or others? Usually, i will get several hundred names fo

[R] A question

2010-01-19 Thread Ron_M
Hi all, I have a expression like that : > rep(2,4) [1] 2 2 2 2 Now I want to write it as "" through some automated way. Is there is function for doing that? I have tested with paste(), but count not get any desired result. Thanks, -- View this message in context: http://n4.nabble.com/A-qu

[R] could we use ":" to represent multiple matrice in a list or sequential chracter names

2010-01-19 Thread rusers.sh
Hi, I know we can use 1:10 to represent the 1,2,3,...,10 numbers, but the following conditions are except. Anybody knows how to represent the following two cases with similar usage of ":" or others? Usually, i will get several hundred names for them, such as a1,a2,... or f[[1]],f[[2]],... #Exa

Re: [R] Plot frame border to start at zero?

2010-01-19 Thread jim holtman
plot(..., xaxs='i', yaxs='i') On Tue, Jan 19, 2010 at 7:42 PM, Douglas M. Hultstrand wrote: > Hello, > > I am creating plots of hourly precipitation and accumulated precipitation > (on different axis, see attached image). I was wondering how can I have the > plot frame (black border) start at zer

[R] putting labels back on a matrix.

2010-01-19 Thread Jon Hak
I did not post this question to the ecology list, even though it is about an analysis using Vegan, since my question is based more on basic data manipulation in R. I think this is a fairly simple question but for the life of me I cannot find a reference for in the archives. I have an analysis

Re: [R] Deleting rows based on duplicate entries in one columns in a data matrix

2010-01-19 Thread Tuatara
Thanks for the swift replies. I have found this to work for my purpose: data <- subset(X, !duplicated(X[,3]) -- View this message in context: http://n4.nabble.com/Deleting-rows-based-on-duplicate-entries-in-one-columns-in-a-data-matrix-tp1018110p1018126.html Sent from the R help mailing list

Re: [R] Deleting rows based on duplicate entries in one columns in a data matrix

2010-01-19 Thread Gabor Grothendieck
See: ?duplicated On Tue, Jan 19, 2010 at 9:47 PM, Tuatara wrote: > > Hi everybody, > > I would like to delete rows based on duplicate entries in column 3 in the > data matrix X (size 6 x 57). I have tried the unique(x) command as > >> data <- X[unique(X[,3]),] > > however, for some reason th

Re: [R] Deleting rows based on duplicate entries in one columns in a data matrix

2010-01-19 Thread Henrique Dallazuanna
Use duplicated indeed of unique. On Wed, Jan 20, 2010 at 12:47 AM, Tuatara wrote: > > Hi everybody, > > I would like to delete rows based on duplicate entries in column 3 in the > data matrix X (size 6 x 57). I have tried the unique(x) command as > >> data <- X[unique(X[,3]),] > > however, fo

[R] Deleting rows based on duplicate entries in one columns in a data matrix

2010-01-19 Thread Tuatara
Hi everybody, I would like to delete rows based on duplicate entries in column 3 in the data matrix X (size 6 x 57). I have tried the unique(x) command as > data <- X[unique(X[,3]),] however, for some reason the command introduces a lot of NA's into the dataset. So, now I'm looking for a

Re: [R] Plot frame border to start at zero?

2010-01-19 Thread Steven McKinney
> -Original Message- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of Douglas M. Hultstrand > Sent: Tuesday, January 19, 2010 4:42 PM > To: R mailing list > Subject: [R] Plot frame border to start at zero? > > Hello, > > I am creating plots of h

Re: [R] Help deciphering segfault in make check

2010-01-19 Thread Karl-Dieter Crisman
Dear Seth, > You might be able to reproduce this and get some more information like > this: > > >R -d gdb >run >source("src/tests/Examples/base-Ex.R") > > Assuming you get a crash, type bt in the gdb console and send output. I think it may have ended up being related to different Fo

Re: [R] how to install spatstat

2010-01-19 Thread Senlin Liang
Thanks. I got it right now. The reason is that I am using a 2.8.1 version of R, which seems causing trouble with the installation. After I updated my R to 2.10.x, everything works great now. best, senlin 2010/1/19 Uwe Ligges > > > On 19.01.2010 03:42, Rolf Turner wrote: > >> >> On 19/01/2010,

Re: [R] Symmetric Matrix classes

2010-01-19 Thread Gad Abraham
On Wed, Jan 20, 2010 at 8:18 AM, Douglas Bates wrote: > On Tue, Jan 19, 2010 at 9:26 AM, Martin Maechler > wrote: >> Scanning for 'Matrix' in old R-help e-mail, I found >> >>> "GA" == Gad Abraham >>>     on Fri, 27 Nov 2009 13:45:00 +1100 writes: >> >>    GA> Hi, >>    GA> I'd like to st

Re: [R] Symmetric Matrix classes

2010-01-19 Thread Gad Abraham
On Wed, Jan 20, 2010 at 2:26 AM, Martin Maechler wrote: > Scanning for 'Matrix' in old R-help e-mail, I found > >> "GA" == Gad Abraham >>     on Fri, 27 Nov 2009 13:45:00 +1100 writes: > >    GA> Hi, >    GA> I'd like to store large covariance matrices using Matrix classes. > >    GA> dsy

Re: [R] apply command

2010-01-19 Thread Dennis Murphy
Hi: Per Baptiste's suggestion (not the iapply one, the plyr one :) > aaply(b, 1, function(x) sort(x, na.last = FALSE)) Var1 1 2 3 4 5 6 1 1 2 4 5 7 9 2 NA 2 3 3 3 5 HTH, Dennis On Tue, Jan 19, 2010 at 2:27 AM, marco salvini wrote: > Can you please help on the issue? > I using the appl

[R] visualization kernelbb data

2010-01-19 Thread Mustafa Durmus
Hello R users, I think, I have an easy problem, but I can't solve it. I have defined home range size of my study animal by using kernelbb, but I couldn't find how to see the data of home range polygons like size and used smoothing parameter. Could anybody help me? Thank you, Mustafa [

[R] Plot frame border to start at zero?

2010-01-19 Thread Douglas M. Hultstrand
Hello, I am creating plots of hourly precipitation and accumulated precipitation (on different axis, see attached image). I was wondering how can I have the plot frame (black border) start at zero, it looks like it is plotted less than zero? The code I use to create the png files is below:

Re: [R] Number of download.

2010-01-19 Thread Barry Rowlingson
On Tue, Jan 19, 2010 at 9:51 PM, Liviu Andronic wrote: > Why would this be evil? For R, for example? I've already read some > objections to this on r-help, but I'm not sure I understand the > reasons. As long as the 'ping' happens once, at first start, > anonymously, and requires confirmation fro

Re: [R] Bias-corrected bootstrap function?

2010-01-19 Thread David Winsemius
On Jan 19, 2010, at 5:06 PM, Henrik wrote: Hi, I try to do statistics on small samples (32 and 16 data points) using the bootstrap method. The results from the ordinary non-parametric bootstrap show significant impact from bias, which suggests the use of a bias-corrected bootstrap method

Re: [R] problem with the precision of numbers

2010-01-19 Thread Gabor Grothendieck
Maybe bc(..., args = "") or perhaps install a more standard version of bc. See links at http://r-bc.googlecode.com On Tue, Jan 19, 2010 at 5:43 PM, kayj wrote: > > Hi , > > Thanks for your help, I have been trying to use the bc package but I am > getting the following error > > "Error in system(c

Re: [R] forgot the function to divide a dataset into equal parts

2010-01-19 Thread rusers.sh
Yes. I am looking for them. Thanks. 2010/1/19 jim holtman > ?cut > ?split > > On Tue, Jan 19, 2010 at 3:18 PM, rusers.sh wrote: > > Hi, > > I just cannot remember the R function to divide a dataset into equal > > parts. And i searched the "divide dataset into equal parts" in R site, > but > >

Re: [R] problem with the precision of numbers

2010-01-19 Thread kayj
Hi , Thanks for your help, I have been trying to use the bc package but I am getting the following error "Error in system(cmd, input = input, intern = TRUE) : -l not found" any idea?? -- View this message in context: http://n4.nabble.com/problem-with-the-precision-of-numbers-tp1017727p10179

[R] Bias-corrected bootstrap function?

2010-01-19 Thread Henrik
Hi, I try to do statistics on small samples (32 and 16 data points) using the bootstrap method. The results from the ordinary non-parametric bootstrap show significant impact from bias, which suggests the use of a bias-corrected bootstrap method. Is there any built in function for this in R? If s

Re: [R] coping with a warning in if()

2010-01-19 Thread Lyman, Mark
Héctor Villalobos ipn.mx> writes: > > Hi, > > I'm sure this one is very easy > > I am trying to write a function where one of its arguments has two posible > (strings) values, > defaulting to one of them if none is specified. My problem is that when > evaluating the function > the foll

Re: [R] Help deciphering segfault in make check

2010-01-19 Thread Seth Falcon
Hi, On 1/19/10 12:05 PM, Karl-Dieter Crisman wrote: I work with the Sage project, and we are trying to improve the ability to use R through Sage. Most things work, but make check seems to cause problems on certain platforms, and now that we want to upgrade to 2.10.1 I thought we should ask for

Re: [R] coping with a warning in if()

2010-01-19 Thread Peter Alspach
Tena koe Hector In addition to Jim's comment, you might like to define your function as: fun <- function(n, result = "simple") This will set the default to 'simple' but one can still call it as fun(result='complete'). HTH ... Peter Alspach > -Original Message- > From: r-help-boun...

Re: [R] forgot the function to divide a dataset into equal parts

2010-01-19 Thread jim holtman
?cut ?split On Tue, Jan 19, 2010 at 3:18 PM, rusers.sh wrote: > Hi, >  I just cannot remember the R function to divide a dataset into equal > parts. And i searched the "divide dataset into equal parts"  in R site, but > cannot find it. >  Anybody can tell me that function. I am just blocked by it

Re: [R] coping with a warning in if()

2010-01-19 Thread jim holtman
Look at what happens when you don't pass in 'result': > c('simple', 'complete') %in% c("simple", "s", "complete", "c") [1] TRUE TRUE result is a vector of length two and provides two results and the 'if' was only expecting one. You might have to debug your code some more. You probably want to u

Re: [R] Number of download.

2010-01-19 Thread Liviu Andronic
On 1/19/10, Barry Rowlingson wrote: > In a similar vein, has anyone ever put any 'phone home' code in a > package, so that authors can track usage? Something in the package > startup code that pings a logging server, for example? > > Yes I know doing such a thing without telling the user and

Re: [R] problem of data manipulation

2010-01-19 Thread Gabor Grothendieck
Using data frame, a, from the post below this is how it would be done in SQL using sqldf. We join together the original table, a, with a table of minimums (computed by the nested select) and then choose only the rows where dt - mindt < 7 (in the where clause). > library(sqldf) > sqldf("select va

[R] coping with a warning in if()

2010-01-19 Thread Héctor Villalobos
Hi, I'm sure this one is very easy I am trying to write a function where one of its arguments has two posible (strings) values, defaulting to one of them if none is specified. My problem is that when evaluating the function the following warning is produced: "the condition has length > 1

Re: [R] problem of data manipulation

2010-01-19 Thread hadley wickham
On Mon, Jan 18, 2010 at 1:54 PM, Bert Gunter wrote: > One way to do it: > > 1. Convert your date column to the Date class using the as.Date() function. > This allows you to do the necessary arithmetic on the dates below. > dt <- as.Date(a[,4],"%d/%m/%Y") > > 2. Create a factor out of your first th

Re: [R] Symmetric Matrix classes

2010-01-19 Thread Douglas Bates
On Tue, Jan 19, 2010 at 9:26 AM, Martin Maechler wrote: > Scanning for 'Matrix' in old R-help e-mail, I found > >> "GA" == Gad Abraham >>     on Fri, 27 Nov 2009 13:45:00 +1100 writes: > >    GA> Hi, >    GA> I'd like to store large covariance matrices using Matrix classes. > >    GA> dsy

Re: [R] problem with the precision of numbers

2010-01-19 Thread Hans W Borchers
manchester.ac.uk> writes: > [...] > > I suspect this is an invented computation -- the "3456" strikes > me as "unlikely" (it reminds me of my habitual illustrative use > of set.seed(54321)). > > There is a definite problem with the development given by kayj. > When k=2000 and i=k, the formula

Re: [R] Remove term from formula for predict.lm

2010-01-19 Thread werner w
Thanks a lot for the answers! Somehow I thought there will be a facility to modify the formula. But setting unwanted variables to zero will of course work and maybe is simple enough. Thanks again! -- View this message in context: http://n4.nabble.com/Remove-term-from-formula-for-predict-lm-t

Re: [R] Number of download.

2010-01-19 Thread Barry Rowlingson
On Tue, Jan 19, 2010 at 8:23 PM, David Winsemius wrote: > > On Jan 19, 2010, at 2:51 PM, Christophe Genolini wrote: > >> Hi the list >> >> Is there a way to know how many times an R package (on CRAN) has been >> download ? > > No, or at least not a comprehensive number. The question came up and wa

Re: [R] Number of download.

2010-01-19 Thread David Winsemius
On Jan 19, 2010, at 2:51 PM, Christophe Genolini wrote: Hi the list Is there a way to know how many times an R package (on CRAN) has been download ? No, or at least not a comprehensive number. The question came up and was discussed in March last year. Search term "popular".: http://fin

[R] forgot the function to divide a dataset into equal parts

2010-01-19 Thread rusers.sh
Hi, I just cannot remember the R function to divide a dataset into equal parts. And i searched the "divide dataset into equal parts" in R site, but cannot find it. Anybody can tell me that function. I am just blocked by it. Thanks a lot. -- - Jane Chang Queen's [[al

Re: [R] Number of download.

2010-01-19 Thread Liviu Andronic
Hello On Tue, Jan 19, 2010 at 7:51 PM, Christophe Genolini wrote: > Is there a way to know how many times an R package (on CRAN) has been > download ? > Recently this page [1] was set up, but it doesn't seem updated for some time now. Liviu [1] http://neolab.stat.ucla.edu/cranstats/ ___

[R] Help deciphering segfault in make check

2010-01-19 Thread Karl-Dieter Crisman
Dear R Help, I work with the Sage project, and we are trying to improve the ability to use R through Sage. Most things work, but make check seems to cause problems on certain platforms, and now that we want to upgrade to 2.10.1 I thought we should ask for help! R builds just fine on both Mac and

[R] Number of download.

2010-01-19 Thread Christophe Genolini
Hi the list Is there a way to know how many times an R package (on CRAN) has been download ? Christophe __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posti

Re: [R] Memory usage in read.csv()

2010-01-19 Thread Gabor Grothendieck
You could also try read.csv.sql in sqldf. See examples on sqldf home page: http://code.google.com/p/sqldf/#Example_13._read.csv.sql_and_read.csv2.sql On Tue, Jan 19, 2010 at 9:25 AM, wrote: > I'm sure this has gotten some attention before, but I have two CSV > files generated from vmstat and f

Re: [R] problem with the precision of numbers

2010-01-19 Thread Ted Harding
On 19-Jan-10 18:48:47, Gabor Grothendieck wrote: > On Tue, Jan 19, 2010 at 1:41 PM, Ted Harding > wrote: >> On 19-Jan-10 17:55:43, Ben Bolker wrote: >>> kayj yahoo.com> writes: Hi All, I was wodering if it is possible to increase the precision using R. I ran the script below i

Re: [R] Using the output of strsplit

2010-01-19 Thread jim holtman
'x' is a matrix and not a dataframe. You should be doing colnames(x) <- c("Date", "quarter") x[,"Date"] <- as.Date(x[,"Date"]) It would help if you took a look at the structure you were using to understand how to access. 'names' applied to a vector would give you the output for 13000 more entr

Re: [R] Using the output of strsplit

2010-01-19 Thread James Rome
This suggestion does not work. x seems to have twice the number of entries as spl. > x <- do.call(rbind, spl) > names(x) <- c('Date', 'quarter') > x$Date <- as.Date(x$Date) Error in x$Date : $ operator is invalid for atomic vectors > x$quarter <- as.numeric(x$quarter) Error in x$quarter : $ operato

Re: [R] restricted permutations in permutest()?

2010-01-19 Thread Kay Cichini
i'll post in r-forge vegan help forum and appreciate your help very much. greetings, kay -- View this message in context: http://n4.nabble.com/restricted-permutations-in-permtest-tp1017422p1017865.html Sent from the R help mailing list archive at Nabble.com. ___

[R] Error compiling R 2.10.1 on AIX

2010-01-19 Thread Mike Waldron
I'm trying to compile R 2.10.1 on AIX 5.3, and am getting the following error: Error in read.dcf(file = descfile) : Line starting 'Package: tools ...' is malformed! Calls: makeLazyLoading ... code2LazyLoadDB -> loadNamespace -> parseNamespaceFile -> read.dcf Execution halted make[3]: *** [all]

Re: [R] Predict polynomial problem

2010-01-19 Thread Peter Ehlers
Charles C. Berry wrote: On Tue, 19 Jan 2010, Charles C. Berry wrote: and the values in those places are different: On Tue, 19 Jan 2010, Barry Rowlingson wrote: On Tue, Jan 19, 2010 at 1:36 AM, Charles C. Berry wrote: > Its the environment thing. > > I think you want something like t

Re: [R] Memory usage in read.csv()

2010-01-19 Thread jim holtman
I read vmstat data in just fine without any problems.  Here is an example of how I do it: VMstat <- read.table('vmstat.txt', header=TRUE, as.is=TRUE) vmstat.txt looks like this: date time r b w swap free re mf pi po fr de sr intr syscalls cs user sys id 07/27/05 00:13:06 0 0 0 27755440 13051648

Re: [R] Help ~

2010-01-19 Thread Rolf Turner
On 19/01/2010, at 11:40 PM, Dieter Menne wrote: next time you post homework here, please make sure that you modify the language of the task a bit so that the discrepancy between the task and your helplessness is less evident. This sounds like a fortune to me! How about it Prof.

Re: [R] problem with the precision of numbers

2010-01-19 Thread Gabor Grothendieck
On Tue, Jan 19, 2010 at 1:41 PM, Ted Harding wrote: > On 19-Jan-10 17:55:43, Ben Bolker wrote: >> kayj yahoo.com> writes: >>> Hi All, >>> >>> I was wodering if it is possible to increase the precision using R. >>> I ran the script below in R and MAPLE and I got different results >>> when k is lar

Re: [R] problem with the precision of numbers

2010-01-19 Thread Ted Harding
On 19-Jan-10 17:55:43, Ben Bolker wrote: > kayj yahoo.com> writes: >> Hi All, >> >> I was wodering if it is possible to increase the precision using R. >> I ran the script below in R and MAPLE and I got different results >> when k is large. >> Any idea how to fix this problem? thanks for your hel

Re: [R] Working with text data/text operators

2010-01-19 Thread Dieter Menne
Mihai.Mirauta wrote: > > > Could someone tell me, how can I select from a dataframe only those > columns whose names contain a certain text? > > For example, if the column names are > "Bond1.Creditclass","Bond1.Price","Bond2.Creditclass","Bond2.Price", how > do I select only the columns corres

Re: [R] Sampling theory

2010-01-19 Thread Thomas Lumley
On Tue, 19 Jan 2010, Christian Hennig wrote: are there any R-packages for computations required in sampling theury (such as confidence intervals under random, stratified, cluster sampling; I'd be partoculary interested in confidence intervals for the population variance, which is difficult eno

Re: [R] Predict polynomial problem

2010-01-19 Thread Peter Ehlers
Barry Rowlingson wrote: On Tue, Jan 19, 2010 at 5:37 PM, Charles C. Berry wrote: Note: i <- 20 bquote(y ~ poly(x,.(i))) y ~ poly(x, 20) I see it now. bquote(y~poly(x,.(i))) gets it's 'i' there and then, sticks it in the returned expression as the value '20', so any further evaluati

Re: [R] OT: Software for specific visualisation of data...ideas?

2010-01-19 Thread Steve_Friedman
Whats wrong with Power Point or anyone of its equivalents? Steve Friedman Ph. D. Spatial Statistical Analyst Everglades and Dry Tortugas National Park 950 N Krome Ave (3rd Floor) Homestead, Florida 33034 steve_fried...@nps.gov Office (305) 224 - 4282 Fax (305) 224 - 4147

Re: [R] OT: Software for specific visualisation of data...ideas?

2010-01-19 Thread Rainer M Krug
On Tue, Jan 19, 2010 at 6:56 PM, Ista Zahn wrote: > You might be able to do that with Rgraphviz or another R package, but > if I was doing it I would probably use PGF/tikZ. The homepage is here: > http://pgf.sourceforge.net/ I second that - gives you really good results. Cheers, Rainer > >

Re: [R] Predict polynomial problem

2010-01-19 Thread Thomas Lumley
On Tue, 19 Jan 2010, Barry Rowlingson wrote: On Tue, Jan 19, 2010 at 5:37 PM, Charles C. Berry wrote: Note: i <- 20 bquote(y ~ poly(x,.(i))) y ~ poly(x, 20) I see it now. bquote(y~poly(x,.(i))) gets it's 'i' there and then, sticks it in the returned expression as the value '20', so

Re: [R] Remove term from formula for predict.lm

2010-01-19 Thread Gabor Grothendieck
If you want to keep the same coefficients but ignore certain ones just use 0 for the ones you don't want: mod <- lm(Sepal.Length ~ Petal.Length + Petal.Width, iris) predict(mod, list(Petal.Length = 3, Petal.Width = 0)) Regarding the problem with the example, the example data was not the best for

Re: [R] problem with the precision of numbers

2010-01-19 Thread Ben Bolker
kayj yahoo.com> writes: > > > Hi All, > > I was wodering if it is possible to increase the precision using R. I ran > the script below in R and MAPLE and I got different results when k is large. > Any idea how to fix this problem? thanks for your help > > for (k in 0:2000){ > s=0 > for(i in

[R] Sampling theory

2010-01-19 Thread Christian Hennig
Hi there, are there any R-packages for computations required in sampling theury (such as confidence intervals under random, stratified, cluster sampling; I'd be partoculary interested in confidence intervals for the population variance, which is difficult enough to find even in books)? Thank

Re: [R] A model-building strategy in mixed-effects modelling

2010-01-19 Thread Ben Bolker
Stats Wolf gmail.com> writes: > > Dear all, > > Consider a completely randomized block design (let's use data(Oats) > irrespoctive of the split-plot design it was arranged in). Look: > > library(nlme) > fit <- lme(yield ~ nitro, Oats, random = ~1|Block, method="ML") > fit2 <- lm(yield ~ nitro

Re: [R] Predict polynomial problem

2010-01-19 Thread Barry Rowlingson
On Tue, Jan 19, 2010 at 5:37 PM, Charles C. Berry wrote: > >> Note: >> >> i <- 20 >>> bquote(y ~ poly(x,.(i))) >>> >> y ~ poly(x, 20) >> >> I see it now. bquote(y~poly(x,.(i))) gets it's 'i' there and then, sticks it in the returned expression as the value '20', so any further evaluations get

Re: [R] OT: Software for specific visualisation of data...ideas?

2010-01-19 Thread Gabor Grothendieck
See the Rgraphviz package in bioconductor. On Tue, Jan 19, 2010 at 11:27 AM, Gavin Simpson wrote: > Dear List, > > A student in the Department where I work would like to produce a graphic > similar to this one: > > http://image.guardian.co.uk/sys-files/Guardian/documents/2009/09/16/Public_spendin

Re: [R] Predict polynomial problem

2010-01-19 Thread Charles C. Berry
and the values in those places are different: On Tue, 19 Jan 2010, Barry Rowlingson wrote: On Tue, Jan 19, 2010 at 1:36 AM, Charles C. Berry wrote: Its the environment thing. I think you want something like this:        models[[i]]=lm( bquote( y ~ poly(x,.(i)) ), data=d) Use        terms

Re: [R] Predict polynomial problem

2010-01-19 Thread Charles C. Berry
On Tue, 19 Jan 2010, Charles C. Berry wrote: and the values in those places are different: On Tue, 19 Jan 2010, Barry Rowlingson wrote: On Tue, Jan 19, 2010 at 1:36 AM, Charles C. Berry wrote: > Its the environment thing. > > I think you want something like this: > > ? ? ? ? ? ? ? ?mo

Re: [R] Model

2010-01-19 Thread Walmes Zeviani
Jim, Did you read the posting guide? Did you do a google search, for example, with terms like "[R] generalized linear models", "[R] count models", "[R] poisson regression"? I think you should do. Walmes. - ..oooO ..

Re: [R] Data import export zipped files from URLs

2010-01-19 Thread Henrique Dallazuanna
Try this: f <- tempfile() download.file("http://nseindia.com/content/historical/EQUITIES/2010/JAN/cm15JAN2010bhav.csv.zip";, f) myData <- read.csv(unzip(f)) On Tue, Jan 19, 2010 at 2:56 PM, Velappan Periasamy wrote: > How to unzip this file?. > >> mydata <- >> unzip("http://nseindia.com/content

Re: [R] Remove term from formula for predict.lm

2010-01-19 Thread David Winsemius
On Jan 19, 2010, at 12:05 PM, werner w wrote: Thanks Gabor and Henrique! Sorry for the imprecise question. I want predict() to use the coefficients estimated by the original regression but to exclude terms from the prediction formula. If I originally estimated y ~ x1 + x2 and got coefficie

Re: [R] Remove term from formula for predict.lm

2010-01-19 Thread werner w
Thanks Gabor and Henrique! Sorry for the imprecise question. I want predict() to use the coefficients estimated by the original regression but to exclude terms from the prediction formula. If I originally estimated y ~ x1 + x2 and got coefficients b0, b1, b2, I would like to remove x2 and predict

Re: [R] Remove term from formula for predict.lm

2010-01-19 Thread Walmes Zeviani
Werner, You could set 0 to that regressors you don't want to consider for prediction. da <- expand.grid(A=1:20, B=rnorm(20, 4, 0.2), C=10^seq(1,2,l=20)) da$y <- rnorm(da$A, 0, 0.3) m0 <- lm(y~A+B+C, data=da) new <- da new$C <- 0 predict(m0)[1:5] predict(m0, newdata=new)[1:5] At your disposal

[R] problem with the precision of numbers

2010-01-19 Thread kayj
Hi All, I was wodering if it is possible to increase the precision using R. I ran the script below in R and MAPLE and I got different results when k is large. Any idea how to fix this problem? thanks for your help for (k in 0:2000){ s=0 for(i in 0:k){ s=s+((-1)^i)*3456*(1+i*1/2000)^3000 } }

Re: [R] (2nd part) variable name substitution

2010-01-19 Thread Ivan Calandra
Super, thanks a lot!! I didn't think about using names() Ivan Le 1/19/2010 17:35, Carlos Ortega a écrit : > OK. > For the names of the variables you can include this code in the loop > (variable nv): > > > seq.dat<-c(seq(7,10,1), seq(12,17,1)) > for( i in 1:length(seq.dat) ) { > > j<-seq.dat[i]

[R] splitting a factor in an analysis of deviance table (negative binomial model)

2010-01-19 Thread Rafael Moral
Dears useRs, I have 2 factors, (for the sake of explanation - A and B), with 4 levels each. I've already fitted a negative binomial generalized linear model to my data, and now I need to split the factors in two distinct analysis of deviance table:  - A within B1, A within B2, A within B3 and A

Re: [R] OT: Software for specific visualisation of data...ideas?

2010-01-19 Thread Carlos Ortega
MS PowerPoint (version 2007 or beta 2010) although difficult for so dense graphic. Prefearable: MindManager although is $$. Use the Trial. Regards, Carlos. On Tue, Jan 19, 2010 at 5:27 PM, Gavin Simpson wrote: > Dear List, > > A student in the Department where I work would like to produce a gra

Re: [R] OT: Software for specific visualisation of data...ideas?

2010-01-19 Thread Ista Zahn
You might be able to do that with Rgraphviz or another R package, but if I was doing it I would probably use PGF/tikZ. The homepage is here: http://pgf.sourceforge.net/ -Ista On Tue, Jan 19, 2010 at 4:27 PM, Gavin Simpson wrote: > Dear List, > > A student in the Department where I work would lik

Re: [R] Data import export zipped files from URLs

2010-01-19 Thread Velappan Periasamy
How to unzip this file?. > mydata <- > unzip("http://nseindia.com/content/historical/EQUITIES/2010/JAN/cm15JAN2010bhav.csv.zip";) Warning message: In unzip("http://nseindia.com/content/historical/EQUITIES/2010/JAN/cm15JAN2010bhav.csv.zip";) : error 1 in extracting from zip file >

Re: [R] (2nd part) variable name substitution

2010-01-19 Thread Carlos Ortega
OK. For the names of the variables you can include this code in the loop (variable nv): seq.dat<-c(seq(7,10,1), seq(12,17,1)) for( i in 1:length(seq.dat) ) { j<-seq.dat[i] nv<-names(ssfa)[j] with( ssfa, twoplots(TO_POS, ssfa[[j]], nv) ) } And this modification in the function (nm): #defines

Re: [R] Model

2010-01-19 Thread Jim Silverton
Hello, I have a barchart. The y-axis represents counts and thex-axis is divided into 10 equal intervals ranging fronm 0 to 0.1, 0.1 to 0.2, ..0.9 to 1.0. Is there a way to model the counts in R? thanks, Jim [[alternative HTML version deleted]] _

[R] OT: Software for specific visualisation of data...ideas?

2010-01-19 Thread Gavin Simpson
Dear List, A student in the Department where I work would like to produce a graphic similar to this one: http://image.guardian.co.uk/sys-files/Guardian/documents/2009/09/16/Public_spending_160909.pdf Does anyone know if the figure in the pdf can be generated in a specific software application fo

Re: [R] question on plot in R with mac

2010-01-19 Thread David Winsemius
On Jan 19, 2010, at 10:21 AM, khaz...@ceremade.dauphine.fr wrote: -- Hello all My computer is MacBook and I want to draw a plot in R, for example for x <- c(1,3,6,9,12) y <- c(1.5,2,7,8,15) I use this command plot(x,y). Y

Re: [R] Remove term from formula for predict.lm

2010-01-19 Thread Gabor Grothendieck
This recomputes the lm but if that is ok then: mod <- lm(y1 ~ x1 + x2 + x3 + x4, anscombe) mod$call$formula <- update(as.formula(mod$call$formula), ~ . - x1 - x2) predict(eval(mod$call), list(x3 = 1, x4 = 1)) On Tue, Jan 19, 2010 at 11:10 AM, Werner W. wrote: > Hi, > > probably just a quick qu

Re: [R] (2nd part) variable name substitution

2010-01-19 Thread Ivan Calandra
Thank you for your answer, I got the second part! Ivan Le 1/19/2010 17:03, Carlos Ortega a écrit : > Hello, > > You can loop in the subset you need by storing in a variable and > looping on that variable with indexes: > > seq.dat<-c(seq(7,10,1), seq(12,17,1)) > for( i in 1:length(seq.dat) ) { >

Re: [R] Remove term from formula for predict.lm

2010-01-19 Thread Henrique Dallazuanna
Try this; mod1 <- lm(y ~ u + v + w, data = d) update(mod1, . ~ . -v) On Tue, Jan 19, 2010 at 2:10 PM, Werner W. wrote: > Hi, > > probably just a quick question: can I somehow change the formula used with > predict? E.g., the regression was run on "y ~ u + v + w" but for the > prediction the te

Re: [R] Server hanging despite efforts to correct memory limits

2010-01-19 Thread Thomas Lumley
You should be able to set limits on memory use for a process in the operating system, eg with limits or ulimits under Unix-alike shells. -thomas On Tue, 19 Jan 2010, Nathan Stephens wrote: My group is working with datasets between 100 Mb and 1 GB in size, using multiple log ins. From

[R] Remove term from formula for predict.lm

2010-01-19 Thread Werner W.
Hi, probably just a quick question: can I somehow change the formula used with predict? E.g., the regression was run on "y ~ u + v + w" but for the prediction the term v should be removed from the formula contained in the regression object and only "y ~ u + w" be used. I could use model.matrix

Re: [R] (2nd part) variable name substitution

2010-01-19 Thread Carlos Ortega
Hello, You can loop in the subset you need by storing in a variable and looping on that variable with indexes: seq.dat<-c(seq(7,10,1), seq(12,17,1)) for( i in 1:length(seq.dat) ) { j<-seq.dat[i] with(ssfa, twoplots(TO_POS, ssfa[[j]])) } Regards, Carlos. On Tue, Jan 19, 2010 at 4:53 PM, Ivan C

Re: [R] (2nd part) variable name substitution

2010-01-19 Thread Ivan Calandra
Hi again! I feel like I cannot do anything by myself but I would now like to plot for all numeric variables I have (14 of them). I wanted to add a loop then. The code is: -- #defines the function for the plots (as written by Duncan Murdoch) twoplots <- function(x, y) { ylab <- deparse(subs

Re: [R] restricted permutations in permutest()?

2010-01-19 Thread Gavin Simpson
On Tue, 2010-01-19 at 06:19 -0800, Kay Cichini wrote: > hello gavin, > > you are right, i didn't get into the documentation to deep and i'm also a > beginner, that's why i'm just about to get into the logical part of the > syntax. > now, the output from perm.disp() says: As I said, you *can't* d

Re: [R] Server hanging despite efforts to correct memory limits

2010-01-19 Thread W
I am running into a separate, but related issue. On Linux, one may impose memory limits via the --max-vsize, --max-nsize, and --max-ppsize arguments upon starting R. I do not know if similar arguments are available on Windows. HTH -- View this message in context: http://n4.nabble.com/Server-hang

Re: [R] Symmetric Matrix classes

2010-01-19 Thread Martin Maechler
Scanning for 'Matrix' in old R-help e-mail, I found > "GA" == Gad Abraham > on Fri, 27 Nov 2009 13:45:00 +1100 writes: GA> Hi, GA> I'd like to store large covariance matrices using Matrix classes. GA> dsyMatrix seems like the right one, but I want to specify just the

[R] question on plot in R with mac

2010-01-19 Thread khazaei
-- Hello all My computer is MacBook and I want to draw a plot in R, for example for x <- c(1,3,6,9,12) y <- c(1.5,2,7,8,15) I use this command plot(x,y). but it dosn't work. Could you please help me? thank you khazaei

[R] Server hanging despite efforts to correct memory limits

2010-01-19 Thread Nathan Stephens
My group is working with datasets between 100 Mb and 1 GB in size, using multiple log ins. From the documentation, it appears that vsize is limited to 2^30-1, which tends to prove too restrictive for our use. When we drop that restriction (set vsize = NA) we end up hanging the server, which requi

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