[R] How to reference previous row?

I am trying to write some code where the factor references its previous value, but can't find a solution searching through the archive. > X first second 1 A 1 2 A 2 3 B 3 4 B 4 5 B 5 6 C 6 7 C 7 I need a third column, in pseudo co

Re: [R] connecting boxplots

You do not provide a workable example and it appears you may be conflating the German and English spellings of "group", but perhaps this code fragment using the first example in boxplots help menu will move you along. It results in drawing the connecting lines to the minimum value in each g

Re: [R] [R} how to build TermDocMatrix in tm text mining package of R

Thank your comments very much. Thank to your help, I understood a flow for a text analysis. However, I could not run the above R scripts because tm package does not work in my PC that is a critical error. Kum Hwang Ph.D. On Sat, Jan 10, 2009 at 12:39 AM, Tony Breyal wrote: > Hi there, I think

Re: [R] Help needed for Loading "tm" package

Thank Prof. Brian Ripley for your comments. Based on Prof Brian Ripley's comments, I checked Java environments in my PC. But I have not solved a "tm" package problem in Win R software. I am not sure but my current conclusion is that the Win-based R binary software has definitely a problem with Rwe

[R] merge table rows (\multirow)

Hi: I need help merging rows. I am trying to merge the 'Month' column using \multirow. For example for the column 'Week' I want July to be merged into one row(weeks 27,28,29,30) and so on for the following weeks. Below, I am creating a PDF using Sweave, MikTex,R-2.8.1 and windows XP to show an e

Re: [R] I'm looking for a book about spatial point patterns (Diggle, 2003)

Hi miltinho, The book "Analysing Spatial Point Pattern Data" is still coming soon. I concerned it for a long time. Do you get it? Just like you said, I think it will be very very well informative! Thank you! I have some 100m*100m plot data about almost one tree species, but I do not know how to ex

Re: [R] fitting curve to data

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 S Ellison wrote: > Just 'cos it's bent doesn't mean you need nls. Sorry, my bad! :o( > With your data, lm fits (suspicously!) well... Nothing suspiciousjust benchmarking some functions with different sized inputs! Thanks for the help! Nathan

Re: [R] I'm looking for a book about spatial point patterns (Diggle, 2003)

Hi,Jones, Got it! And only pn0y is enough? Best wishes and Happy New Year! Kingsford Jones wrote: > > Unangu, > > If you haven't seen the 200pg workshop notes that Adrian Baddeley has > made available from his spatstat webpage, I highly recommend them: > > http://www.csiro.au/files/files/pn0

Re: [R] connecting boxplots

In other words: I will connect the median, min and the max area of the boxplot with a line. The function lines() could help me, but I don't know which parameters the lines() function should have. johnhj wrote: > > Hii, > > I created some boxplots with this commands: > > x <-read.table

Re: [R] writing an own function - is.factor

On Sun, Jan 11, 2009 at 9:04 PM, Jörg Groß wrote: > ...now I want to get the mean and sd, as long as the column is not of type > factor. > ...But how can I check this, if I don't know the column name? > ... > is.factor(d[1]) > produces "FALSE". > Try is.factor(d[[1]]). Remember that in R, x[...

Re: [R] fitting curve to data

Just 'cos it's bent doesn't mean you need nls. With your data, lm fits (suspicously!) well... y<-c(0.000,0.004,0.008,0.016,0.024,0.032,0.044,0.064,0.072,0.088,0.108,0.140 ,0.156,0.180,0.208,0.236,0.264,0.296,0.320,0.360,0.408,0.444,0.472,0.524 ,0.576) x<-c(100,200,300,400,500,600,700,800,900,1000

Re: [R] fitting curve to data

As x goes from 200 to 400, y goes from ,004 to .016 so y is quadrupling while x doubles -- quadratic growth.Fitting to a quadratic and plotting shows this to be the case. Note that for y to be quadratic in x it must be linear in the coefficients of x so we can just use lm and don't need nls:

Re: [R] fitting curve to data

First, try plot(x,y) If you want to use nls, you have to specify a nonlinear function to fit to your data. See ?nls. If you are really stuck on how to fit regression models, you should consult a statistician (CSIRO has a lot of expertise). Simon. On Mon, 2009-01-12 at 12:19 +1000, Nathan S. Wa

Re: [R] writing an own function - is.factor

try this: > d <- data.frame(c(rep("m",5), rep("f",5)), c(1:10)) > names(d) <- c("x", "y") > d x y 1 m 1 2 m 2 3 m 3 4 m 4 5 m 5 6 f 6 7 f 7 8 f 8 9 f 9 10 f 10 > lapply(d, function(x) if (is.numeric(x)) c(mean=mean(x), sd=sd(x))) $x NULL $y mean sd 5.50 3.027

Re: [R] Spitting a df Column Name

names(datanamessplit) <- gsub("count.", "", names(data)) On Sun, 2009-01-11 at 18:13 -0800, jimdare wrote: > Hi, > > If I have the following column names: > > names(data) > [1] "count.run" "count.walk" "count.drive" > > How do I split these so i get > > names(datanamessplit) > [1] "run"

[R] fitting curve to data

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I have the following data: > y [1] 0.000 0.004 0.008 0.016 0.024 0.032 0.044 0.064 0.072 0.088 0.108 0.140 [13] 0.156 0.180 0.208 0.236 0.264 0.296 0.320 0.360 0.408 0.444 0.472 0.524 [25] 0.576 > x [1] 100 200 300 400 500 600 700 800 900 1

[R] Spitting a df Column Name

Hi, If I have the following column names: names(data) [1] "count.run" "count.walk" "count.drive" How do I split these so i get names(datanamessplit) [1] "run" "walk" "drive" Thanks for your help, Jim -- View this message in context: http://www.nabble.com/Spitting-a-df-Column-Name-t

[R] writing an own function - is.factor

Hi, I try to write an own function in R. I want a summary table with descriptive statistics. For example, I have this data.frame: d <- data.frame(c(rep("m",5), rep("f",5)), c(1:10)) names(d) <- c("x", "y") d x y 1 m 1 2 m 2 3 m 3 4 m 4 5 m 5 6

[R] R "Threatens" SAS According to The NYT

The article was dugg on Digg. http://digg.com/software/Data_Analysts_Captivated_by_R_s_Power_3 If you Digg, why not digg this. Farrel Buchinsky __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting

Re: [R] Orthogonal Complement

Yes, download the HH package from CRAN and then see ?HH::orthog.complete for the function description and several examples. Rich -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of megh Sent: Sunday, January 11, 2009 19:29 To: r-help@r-

[R] Orthogonal Complement

Is there any R function which calculate the Orthogonal Complement of a mxn matrix (with full column rank)? Thanks in advance -- View this message in context: http://www.nabble.com/Orthogonal-Complement-tp21406355p21406355.html Sent from the R help mailing list archive at Nabble.com. __

Re: [R] boxplots: yaxp does not work

PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. I have no idea of what you would like to do with the tick marks. I assume you can always use 'axis' to label your axis: boxplot(len ~ dose, data = Tooth

Re: [R] How to get solution of following polynomial?

Hi Ravi, Thanks for this reply. However I could not understand meaning of "vectorizing the function". Can you please be little bit elaborate on that? Secondly the package "polynomial" is not available in CRAN it seems. What is the alternate package? Thanks, Ravi Varadhan wrote: > > Hi, > > Yo

[R] connecting boxplots

Hii, I created some boxplots with this commands: x <-read.table(file="test.txt") x$group <- rep(1:8, each=5) boxplot(V3~gruppe, data=x) Now, I will connect the boxplots to each other to the min, max and median values. Can anybody help me how to do it ? greetings, J -- View this message in

Re: [R] Boxplot from matrices

Thank you very much for you help... Carlos J. Gil Bellosta wrote: > > Hello, > > The following code may help you: > >> my.matrix <- matrix( rnorm(16), ncol = 4 ) >> boxplot( my.matrix ~ col( my.matrix ) ) > > Best regards, > > Carlos J. Gil Bellosta > http://www.datanalytics.com > > >

Re: [R] summary with variance / sd

On Jan 11, 2009, at 4:38 PM, Jörg Groß wrote: Hi, I have a data frame and would like to have summary statistics for grouped data. With summary() I get the central tendencies for the overall data. How can I get descriptive statistics with variances and standard deviations? In the futu

Re: [R] summary with variance / sd

You can use summaryBy() in the doBy package: summaryBy(y+x~group, data=mydata, FUN=c(mean,sd)) Søren Fra: r-help-boun...@r-project.org på vegne af Jörg Groß Sendt: sø 11-01-2009 22:38 Til: r-help@r-project.org Emne: [R] summary with variance / sd Hi, I hav

[R] boxplots: yaxp does not work

Hi, I'd like to change the y-tickmarks of a boxplot. But it doesn't work with yaxp (like I would do it in a plot-function). Can someone help me out? __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the p

Re: [R] summary with variance / sd

Hi Jörg, ?by here probably something like by(data=mydata,INDICES=mydata$group, FUN=sd, ...) HTH, Stephan Jörg Groß schrieb: Hi, I have a data frame and would like to have summary statistics for grouped data. With summary() I get the central tendencies for the overall data. How can I g

[R] summary with variance / sd

Hi, I have a data frame and would like to have summary statistics for grouped data. With summary() I get the central tendencies for the overall data. How can I get descriptive statistics with variances and standard deviations? for example my data.frame: group x y exp

Re: [R] How to get solution of following polynomial?

Hi, You can use the "polynomial" package to solve your problem. The key step is to find the exact polynomial representation of fn(). Noting that it is a 8-th degree polynomial, we can get its exact form using the poly.calc() function. Once we have that, it is a simple matter of finding the r

Re: [R] R, clinical trials and the FDA

I don't mind at all. Very kind of you Kingsford. Thanks, Marc on 01/11/2009 01:05 PM Kingsford Jones wrote: > I hope that Marc doesn't mind, but I felt that part of his recent post > was important enough to deserve it's own subject line rather then > being lost in a 60-msg-long thread... > >

[R] R, clinical trials and the FDA

I hope that Marc doesn't mind, but I felt that part of his recent post was important enough to deserve it's own subject line rather then being lost in a 60-msg-long thread... On Sun, Jan 11, 2009 at 10:08 AM, Marc Schwartz wrote: ... I strongly believe that the comments regarding R and the FD

Re: [R] I'm looking for a book about spatial point patterns (Diggle, 2003)

Hi Unangu I also put my two cents on the Kingsford´s suggestion. The "BOOK" the Adrian turned available are very very well informative! I enjoyed so much! Best wishes miltinho, brazil On Sun, Jan 11, 2009 at 3:48 PM, Kingsford Jones wrote: > Unangu, > > If you haven't seen the 200pg workshop n

Re: [R] I'm looking for a book about spatial point patterns (Diggle, 2003)

Unangu, If you haven't seen the 200pg workshop notes that Adrian Baddeley has made available from his spatstat webpage, I highly recommend them: http://www.csiro.au/files/files/pn0y.pdf hth, Kingsford Jones On Sat, Jan 10, 2009 at 9:04 PM, Unangu wrote: > > To understand some functions about

Re: [R] R in the NY Times

on 01/10/2009 01:50 PM Kingsford Jones wrote: > The reactions to the NYT article have certainly made for some > interesting reading. > > Here are some of the links: > > http://overdetermined.net/site/content/new-york-times-article-r > > http://jackman.stanford.edu/blog/?p=1053 > > http://ggorja

Re: [R] upgrade R version

ms.com hotmail.com> writes: > i want to upgrade my R version from 2.7.1 to 2.8.1 Gabor's http://code.google.com/p/batchfiles/ can help you getting the libraries right after an upgrade. Dieter __ R-help@r-project.org mailing list https://stat.ethz

Re: [R] help me

Do you mean how to create an R function, CD, that represents the resulting function of x? If that's it then try this: > CD <- function(x) {} > body(CD) <- yacas("Integrate(y,0,1-x)2 - x - y - 1")[[1]] > CD function (x) (1 - x)^2 - (1 - x)^2/2 See ?bodyAsExpression for more info. Also try:

Re: [R] Converting Numerical Matrix to List of Strings

On Sun, Jan 11, 2009 at 9:38 AM, Gundala Viswanath wrote: > Hi all, > > Given a matrix: > >> mat > >[,1] [,2] [,3] > [1,]000 > [2,]333 > [3,]111 > [4,]211 > How can I convert it to a list of strings: >> desired_output > [1] "aaa" "ttt" "ccc" "g

Re: [R] Converting Numerical Matrix to List of Strings

one way is the following: mat <- matrix(sample(0:3, 12, TRUE), 4, 3) strg <- c("a", "c", "g", "t") out <- strg[mat + 1] dim(out) <- dim(mat) apply(out, 1, paste, collapse = "") I hope it helps. Best, Dimitris Gundala Viswanath wrote: Hi all, Given a matrix: mat [,1] [,2] [,3] [1,]

Re: [R] Converting Numerical Matrix to List of Strings

try this: > mapping <- c('0'='a', '1'='c', '2'='g', '3'='t') > x <- matrix(sample(0:3, 30, TRUE), ncol=3) > x [,1] [,2] [,3] [1,]311 [2,]132 [3,]111 [4,]111 [5,]213 [6,]130 [7,]132 [8,]310

Re: [R] Problem using odfWeave

You need to cat the results using odfCAt, otherwise you are just writing the output with no XML around it. Max On Jan 11, 2009, at 8:42 AM, "Mark Heckmann" wrote: Hi everybody, I don't get odfWeave to run properly. My odt file is as a simple as: Some text. <

[R] help me

Hello, Can You help me? How to save this functions in cd: install.packages("Ryacas", dep = TRUE) library(Ryacas) yacasInstall() yacas("Integrate(z,1,2-x-y)1") yacas("Integrate(y,0,1-x)2 - x - y - 1") yacas("Integrate(x,0,1)(1 - x)^2 - (1 - x)^2/2") Thanks You, Sincerely, Jolka _

Re: [R] Reference-pages: each function beginning on seperate page?

On 11/01/2009 10:06 AM, Oliver wrote: Hello, is the reference manual also available with each explained function beginning on a seperate page? Or can this somehow be done easily? I prefer reading documentation on paper, but printing makes more sense, when each function can be printed seperate

Re: [R] I'm looking for a book about spatial point patterns (Diggle, 2003)

Thank you very much! Mike Lawrence-7 wrote: > > Amazon lists 2 used copies for sale: > http://www.amazon.com/Statistical-Analysis-Spatial-Point-Patterns/dp/0340740701 > > > On Sun, Jan 11, 2009 at 12:04 AM, Unangu wrote: >> >> To understand some functions about spatial point patterns in "spat

Re: [R] Makevars

Hadassa, On 11 January 2009 at 15:29, Hadassa Brunschwig wrote: | Again, I am trying to include a C function tools.c into a main.c file | which needs to be run via R. | I include the header file via #include tools.h . | What I understood is that I need another file which specifically links | the

[R] Converting Numerical Matrix to List of Strings

Hi all, Given a matrix: > mat [,1] [,2] [,3] [1,]000 [2,]333 [3,]111 [4,]211 How can I convert it to a list of strings: > desired_output [1] "aaa" "ttt" "ccc" "gcc" In principle: 1. Number of Column in matrix = length of string (= 3) 2. N

Re: [R] Boxplot from matrices

Hello, The following code may help you: > my.matrix <- matrix( rnorm(16), ncol = 4 ) > boxplot( my.matrix ~ col( my.matrix ) ) Best regards, Carlos J. Gil Bellosta http://www.datanalytics.com On Sun, 2009-01-11 at 05:23 -0800, johnhj wrote: > Hii, > > I will create boxplots from matrices.

[R] Sweave removes \end{table}

Hi, I have found that when I run my .rnw file through Sweave it removes the \end{table} LaTeX command after the table that was not generated using R.: excerpt from my .rnw file ... 6.000 -- 6.003 & 3 &0.6 \\ \hline 8.500 -- 8.505 & 4 &0.8 \\ \hline Grand Tota

[R] Boxplot from matrices

Hii, I will create boxplots from matrices. I have the following data sets: 5.0 1.78 2.99 2.019 0 10.0 1.79 3.00 1.744 0 15.0 1.78 2.98 1.936 0 20.0 1.78 2.99 1.975 0 25.0 1.73 2.91 3.591 0 30.0 1.7

[R] Problem using odfWeave

Hi everybody, I don't get odfWeave to run properly. My odt file is as a simple as: Some text. <>= print(1:10) @ --- The output I get ist the following: --- > odfWeave("roffice.odt", "rofficeOUT.o

[R] Reference-pages: each function beginning on seperate page?

Hello, is the reference manual also available with each explained function beginning on a seperate page? Or can this somehow be done easily? I prefer reading documentation on paper, but printing makes more sense, when each function can be printed seperated (like in man-pages). Any idea, how to

Re: [R] Convert date/time string to date

If the file represents a time series then you might want to look at the zoo package. See read.zoo, in particular and ?strptime and R News 4/1 for the % codes and other date/time info. Also ?lag.zoo On Sun, Jan 11, 2009 at 12:22 AM, Heston Capital wrote: > I am new to R and am trying to import a

Re: [R] How to get solution of following polynomial?

In theory, you could define the following 2 functions powermat <- function(myvec) { powervec <- function(x,maxpower) sapply(0:maxpower,function(n)x^n) sapply(myvec,function(x)powervec(x,length(myvec)-1)) } polycoeffs <- function(fn,order,support=0:order) solve(t(powermat(support)),sappl

[R] calibrate function

Hi all, I have a question on the package « survey” I have some difficulties to use the function ‘calibrate’. Although it works well with one single factor variable, I cannot use it for 2 and get the message “Erreur dans regcalibrate.survey.design2(design, formula, population, aggregate.stage

Re: [R] Strange behaviour of paste

Mike Lawrence thatmike.com> writes: > > I suspect your example code is too long & complicated for anyone to bother > attempting to help you. [...] Because of that I marked the line, where the error occured, I thought it was easy to find out for experienced users. But I just found the problem.

[R] Makevars

Hi I have sent a previous email "Error in dyn.load()" for which, shame on me, I later found a partial answer. I have been trying to look into what I exactly need to include into Makevars and where it needs to be located and have not found a satisfying answer yet. Maybe the following questions are

Re: [R] How to get solution of following polynomial?

On Sun, Jan 11, 2009 at 6:03 AM, RON70 wrote: > > Hi, I want find all roots for the following polynomial : > > a <- c(-0.07, 0.17); b <- c(1, -4); cc <- matrix(c(0.24, 0.00, -0.08, > -0.31), 2); d <- matrix(c(0, 0, -0.13, -0.37), 2); e <- matrix(c(0.2, 0, > -0.06, -0.34), 2) > A1 <- diag(2) + a %*

Re: [R] I'm looking for a book about spatial point patterns (Diggle, 2003)

Amazon lists 2 used copies for sale: http://www.amazon.com/Statistical-Analysis-Spatial-Point-Patterns/dp/0340740701 On Sun, Jan 11, 2009 at 12:04 AM, Unangu wrote: > > To understand some functions about spatial point patterns in "spatstat" ,I > should know some background about it, and the best

Re: [R] problems installing package XML to a computer without an internet connection

Brian, Thank you for your reply and advice. I hope that I did not give the impression that your build was the cause of the difficulties I experienced. If so, I apologise for this. Your email was helpful in alerting me to the need to install 'proxy' and I subsequently located the current vers

Re: [R] Strange behaviour of paste

I suspect your example code is too long & complicated for anyone to bother attempting to help you. Try simplifying it to just a few lines; I've found that the simplification process itself often leads me to the solution to my own problem. On Sun, Jan 11, 2009 at 6:50 AM, Oliver Bandel wrote: > He

Re: [R] upgrade R version

Since you are probably a Windows user (from the advert), see the R for Windows FAQ, at http://cran.r-project.org/bin/windows/base/rw-FAQ.html or on the menus in your existing R installation. On Sun, 11 Jan 2009, ms.com wrote: dear all contributors i am new R user i want to upgrade my R versi

[R] Error in dyn.load()

Hi everyone! I am relatively new to writing R extensions and to C programming. I thus hope that my question is not too basic. I am trying to load a shared object into R via the command dyn.load("convertR.so") and I get the following error: Error in dyn.load("convertR.so") : unable to load shared

[R] Strange behaviour of paste

Hello, here I have some code, which behaves quite strange, IMHO. There is a "res.txt" which will be collected before printing it. There is a paste-statement, which has a comment at the end of the line, which is this one: "# !HERE!". If you throw out the first hash-mark "#" on that line,

[R] upgrade R version

dear all contributors i am new R user i want to upgrade my R version from 2.7.1 to 2.8.1 i tried myself, but i could not do it as R is different from other software could anyone guide me please warm regard madan student University of Bergen Windows Live™: Keep your life in sync. Ch

Re: [R] PHP and R

On Sun, 11 Jan 2009, Applejus wrote: I know that using PHP command exec(...) you can call a unix command that would run an R script, but how does it work on Windows platform? Exactly the same way. Basically, I have an R function which takes a file and two strings as arguments and I need to c

[R] PHP and R

Hi, I know that using PHP command exec(...) you can call a unix command that would run an R script, but how does it work on Windows platform? Basically, I have an R function which takes a file and two strings as arguments and I need to call this function and pass to it the arguments automaticall

Re: [R] Arguments for Rcmd BATCH

Professor Ripley, Thank you very much. I have used Rscript and it runs fine now. Your help is very much appreciated. Best wishes, Andrew hicks -Original Message- From: Prof Brian Ripley [mailto:rip...@stats.ox.ac.uk] Sent: 11 January 2009 01:23 To: Andrew Hicks Cc: r-help@r-project.o

[R] PAW Update: Predictive analytics workshops and more case studies

Hi everyone, Predictive Analytics World's program for Feb 18-19 in San Francisco (www.predictiveanalyticsworld.com) has grown a bit since my post several weeks ago, and is looking better than ever. The conference covers today's commercial deployment of predictive analytics, across industries and

Re: [R] Extracting File Basename without Extension

Gabor Grothendieck wrote: > On Fri, Jan 9, 2009 at 4:28 PM, Wacek Kusnierczyk > wrote: > >> Rau, Roland wrote: >> >>> P.S. Any suggestions how to become more proficient with regular >>> expressions? The O'Reilly book ("Mastering...")? Whenever I tried >>> anything more complicated than bas

Re: [R] Extracting File Basename without Extension

Gabor Grothendieck wrote: > On Fri, Jan 9, 2009 at 4:20 PM, Wacek Kusnierczyk > > >> right; there's a straightforward fix to my solution that accounts for >> cases such as '.bashrc': >> >> names = c("foo.bar", ".zee") >> sub("(.+)[.][^.]+$", "\\1", names) >> >> you could also use a lookbehind i

Re: [R] ftp connections for uploading files

On Fri, 9 Jan 2009, Duncan Temple Lang wrote: Hi Thomas Rather than getting into the details of libcurl options which are quite general and very flexible, I thought it was easier to write an explicit ftpUpload() function that takes care of the details. You need a new version of the package (a

Re: [R] Convert date/time string to date

On Sun, 11 Jan 2009, Heston Capital wrote: I am new to R and am trying to import a text file that contains date/time and various fields. I want to sort this matrix by date and also perform calculations on the date field (difference between two dates etc). The format of the string looks as foll

Re: [R] problems installing package XML to a computer without an internet connection

On Sun, 11 Jan 2009, Bob Green wrote: Hello, I am hoping for some advice regarding how I can install the XML package which I require to run package tm. Normally I would use the install package option, however, I have to install the packages to a laptop running XP. Windows, I presume. Th