[R] Package Licences

Are there any particular licences under which R packages must be released or is it the discretion of the author? The same question if the package is to be destined for CRAN? Kind regards, Nathan -- Dr. Nathan S. Watson-Haigh OCE Post

Re: [R] String replacement in an expression

William Dunlap wrote: Bill Dunlap TIBCO Software Inc - Spotfire Division wdunlap tibco.com -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Wacek Kusnierczyk Sent: Thursday, May 28, 2009 12:31 PM To: Caroline Bazzoli

Re: [R] RODBC package: how to check whether connection is open

Stavros Macrakis-2 wrote: What is the recommended way of checking whether an RODBC connection is open? Since odbcValidChannel is not exported from namespace RODBC, I suppose I shouldn't be using it. This is the best I could come up with, but it seems a bit 'dirty' to be using a

Re: [R] custom sort?

Steve Jaffe wrote: hmm, that is what I was afraid of. I considered that but thought to myself, surely there must be an easier way. I wonder why this feature isn't available. It's there in scripting languages, like perl, but also in hardcore languages like C++ where std::sort and sorted

Re: [R] labels in rgl.sphere

Naoki Irie-3 wrote: I am using rgl.sphere to visualize scatter plot data in three dimensional space. However, as I can not see the labels of each data point directly in RGL window, I usually look for the values of x, y, z axis to find out the label (or line number of the data point).

Re: [R] custom sort?

Duncan Murdoch wrote: On 28/05/2009 6:06 PM, Steve Jaffe wrote: hmm, that is what I was afraid of. I considered that but thought to myself, surely there must be an easier way. I wonder why this feature isn't available. It's there in scripting languages, like perl, but also in hardcore

Re: [R] custom sort?

Stavros Macrakis wrote: I agree that it is surprising that R doesn't provide a sort function with a comparison function as argument. Perhaps that is partly because calling out to a function for each comparison is relatively expensive; R prefers vector operations. That said, many useful

Re: [R] (OT) Does pearson correlation assume bivariate normality of the data?

Thanks all for the on- and off-list responses. For a relevant discussion see the normality tests thread [1], and specifically another excellent overview by Thomas on the robustness of the t-test [2]. Best, Liviu [1] http://thread.gmane.org/gmane.comp.lang.r.general/86180 [2]

Re: [R] Package Licences

Licences are considered to apply to 'distribution' (I'm not entirely sure if that is what you mean by 'released'), but some also apply to usage. The primary requirements for distribution, especially over CRAN, are that the licence be clear and usable. Examples of problems - licences that

[R] final value of nnet with censored=TRUE for survival analysis

Hi there, I´ve a question concerning the nnet package in the area of survival analysis: what is the final value, which is computed to fit the model with the following nnet-c all: net - nnet(cat~x, data=d, size=2, decay=0.1, censored=TRUE, maxit=20,

[R] problem with ls command

Hi all , I am facing some problems with 'ls' command. Whenever I use it I get the following error : ls(KEGG.db) Error in as.environment(pos) : no item called KEGG.db on the search list ls(pkgname) Error in as.environment(pos) : no item called KEGG.db on the search list and this

Re: [R] problem with ls command

I am not sure what you want. The error msg is clear to me. You can use search() to search what are in the search path, for example. search() [1] .GlobalEnvpackage:stats package:graphics [4] package:grDevices package:utils package:datasets [7] package:methods Autoloads

[R] Finding Longest Identical Subsequence across Multiple Time Series?

Hi all Does anyone here know of an efficient algorithm to find the longest identical subsequence across multiple time series? Say I have two time series A and B (not necessarily of identical length), and I wish to find the beginning and ending index of the longest common subsequence across both

Re: [R] IP-Address

IP addresses are very (very!) difficult to parse and sort correctly because there are all sorts of supported formats. Try to use something like PostgreSQL instead: it is already implemented there. But if you are sure all your data is of the n.n.n.n form, then something along the lines of the

Re: [R] final value of nnet with censored=TRUE for survival analysis

The value includes the weight decay term: it is a penalized fit. See the documentation pages 245 and 247. (nnet is support software for a book, so the book is the primary documentation.) On Fri, 29 May 2009, Andrea Weidacher wrote: Hi there, I?ve a question concerning the nnet package in

[R] How to read a binary file bit by bit?

Hello everybody, I am trying to a read a binary file with different formats. I use the readBin function so I can read bytes, short and double numbers depending on the bytes per element in the byte stream. But now I need to read bit by bit, and join them in groups of ten because every ten bits

Re: [R] IP-Address

Allan Engelhardt wrote: IP addresses are very (very!) difficult to parse and sort correctly because there are all sorts of supported formats. Try to use something like PostgreSQL instead: it is already implemented there. But if you are sure all your data is of the n.n.n.n form, then

Re: [R] IP-Address

normalizedip - function(ipstring){ ipsepstring - strsplit(ipstring,\\.)[[1]] cat(sapply(ipsepstring,function(x) sprintf(%03i,as.numeric(x))),sep=.) } normalizedip(1.2.3.55) yields 001.002.003.055 and therefore should allow you to sort in correct order. edwin Sendjaja wrote: Hi,

Re: [R] How to read a binary file bit by bit?

In my humble opinion, forget R and use more appropriate tools, like a very small C program that reads 10 bytes at a time and outputs 8 integers. Then use R to read the resulting file. Ciao! mario Inigo Pagola Barrio wrote: Hello everybody, I am trying to a read a binary file with

Re: [R] IP-Address

Peter Dalgaard wrote: Allan Engelhardt wrote: IP addresses are very (very!) difficult to parse and sort correctly because there are all sorts of supported formats. Try to use something like PostgreSQL instead: it is already implemented there. But if you are sure all your data is of the

[R] Backpropagation to adjust weights in a neural net when receiving new training examples

I want to create a neural network, and then everytime it receives new data, instead of creating a new nnet, i want to use a backpropagation algorithm to adjust the weights in the already created nn. I'm using nnet package, I know that nn$wts gives the weights, but I cant find out which weights

[R] ACF roots

I have a number of signals whose ACF may or may not cross the zero line. Whether roots exist or not is a piece of useful information for me. Likewise, if any root exists, I'd like to know its lag value. Unluckily R function ACF does not seem to provide such information. I wonder whether someone

Re: [R] Drawing schematics

Hi. Have you looked at graphviz? I have previously used R to generate graphviz diagrams. I create a template graphviz diagram and then use R to parse this template, substitute appropriate values and then outputto a temporary file. I then use a system() call to run graphviz on thisoutputted

Re: [R] question about using a remote system

I've not ever tried something like this. You didn't quite answer the question though. Do you need interactive sessions, or are users choosing from a number of batch jobs? If the latter, then perhaps you would be better forsaking Rcmdr (which I have not used) and instead consider a shell-based, or

Re: [R] R connectivity with Oracle DB

Hello Madan, I am rather novice as well, so I went the ODBC way. If you define an ODBC connection to Oracle, with System DSN dsn-name, the code to get the results of a query into, say, mydata is like : library(RODBC) # First of all channel - odbcConnect(dsn-name, uid=someuser) # double quotes

Re: [R] How to read a binary file bit by bit?

Inigo Pagola Barrio wrote: Hello everybody, I am trying to a read a binary file with different formats. I use the readBin function so I can read bytes, short and double numbers depending on the bytes per element in the byte stream. But now I need to read bit by bit, and join them in groups

Re: [R] Labeling barplot bars by multiple factors

Thomas Levine wrote: Ah, that makes sense. But now another two issues have arisen. Firstly, the error bars look like confidence intervals, and I'm pretty sure that they are but does some document verify this? I suppose I could check the code too. Secondly, I just read about how dynamite plots

Re: [R] IP-Address

Peter Dalgaard wrote: Allan Engelhardt wrote: [...] Getting rid of the conversions including the matrix(unlist) combo is left as an exercise (it's too hot here) Here's one way: con - textConnection(as.character(a$ip)) o - do.call(order,read.table(con,sep=.)) close(con)

[R] Regular point pattern on multi-segment line

I need your help for the following purpose : I would like to create regularly spaced points on a multisegment line (a 'psp class' object). A function of the spatstat library( = pointsOnLines() ) is dedicated to that objective but the problem is that the probability of falling on a

[R] The R Journal volume 1, number 1, now available

On behalf of the editorial team, I am happy to inform you that the first issue of The R Journal is now available: http://journal.r-project.org I would like to thank team members Heather Turner, Peter Dalgaard, and John Fox for extraordinary efforts in producing this first number of the Journal.

Re: [R] Regular point pattern on multi-segment line

On 29-May-09 11:23:15, Pascal LAFFARGUE wrote: I need your help for the following purpose : I would like to create regularly spaced points on a multisegment line (a 'psp class' object). A function of the spatstat library( = pointsOnLines() ) is dedicated to that objective but the problem

Re: [R] how do I decide the best number of observations in MLE?

losemind wrote: Of course, in MLE, if we collect more and more observations data, MLE will perform better and better. But is there a way to find a bound on parameter estimate errors in order to decide when to stop collect data/observations, say 1000 observations are great, but 500

[R] Interface R -- Processing

Dear Group members I was wondering whether there is any interface to use processing (www.processing.org) to visualize R analyses? If so could somebody point me to relevant ressources? If not, are there any attempts to build such an interface / package? Best Regards, Simon -- Nur bis

[R] [R-pkgs] WriteXLS - New Version 1.7.1

The updated package has been submitted to CRAN and will propagate to mirrors over the next day or so. It is maintained on R-Forge at http://r-forge.r-project.org/projects/writexls , where downloads are available as well. Package: WriteXLS Version: 1.7.1 Description: Cross-platform perl

[R] How to replace Inf by zero?

Hi R users, Someone knows how to replace Infinite value by zero. I have a vector with some Inf value and I want to substitute these values by zero to get the mean of the components of the vector. Any idea? Many thanks, Marlene. [[alternative HTML version deleted]]

[R] error message in plm

Hi everyone, Could anyone tell me what means the follow error message Error in xj[i] : invalid subscript type 'closure' It happens when I run the function plm, like this: ff-totaccz~lactivoz+varvolnegz ss-plm(ff,data=regaccdis,na.omit) Error in xj[i] : invalid subscript type 'closure'

[R] Error messages/systemfit package

Hello !   I’m trying to estimate a system of equation (demand and supply) using the systemfit package.  My program is:   library(systemfit) demand - tsyud ~ tsyud1 + tsucp + tspo + tssn supply - tscn ~ tsyn + tsqn + tsksn + tsucp system - list(demand=eqdemand, learning = eqsupply) labels -

[R] Problem loading rJava

I am running R on Windows XP I first tried to install rJava and got this message utils:::menuInstallLocal() package 'rJava' successfully unpacked and MD5 sums checked updating HTML package descriptions then i tried this require(rJava) Loading required package: rJava Error in if

Re: [R] How to replace Inf by zero?

Dear Marlene, Have a look at is.infinite(). Replacing them by zero is not a very bright idea if you want the mean of the resulting vector. Have a look at the example below. #create a vector x - rnorm(100, mean = 1000) #replace 20 values with Inf x[sample(seq_along(x), 20, replace = FALSE)] - Inf

Re: [R] GTK Tooltips under Linux

On Thu, May 28, 2009 at 7:35 PM, Ronggui Huang ronggui.hu...@gmail.comwrote: Dear all, I want to set tool-tips for a gtkButton. I use the following code which works under Windows. However, it doesn't work under Linux. Any hints? Thanks. Unfortunately, on platforms besides Windows, the

Re: [R] How to replace Inf by zero?

Thanks a lot Andrea, it works! Marlene. 2009/5/29 Andrea Weidacher da0...@yahoo.de Hi Marlene, try this: x[which(x==Inf)] - 0 Andrea. -- *Von:* marlene marchena marchenamarl...@gmail.com *An:* R-help@r-project.org *Gesendet:* Freitag, den 29. Mai 2009,

Re: [R] Backpropagation to adjust weights in a neural net when receiving new training examples

You can figure out which weights go with which connections with the function summary(nnet.object) and nnet.object$wts. Sample code from Venables and Ripley is below: # Neural Network model in Modern Applied Statistics with S, Venables and Ripley, pages 246 and 247 library(nnet)

[R] data manipulation involving aggregate

hi all, I often have a data frame like this example data.frame(sq=c(1,1,1,2,2,3,3,3,3),area=c(1,2,3,1,2,3,1,2,3),habitat=c(garden,garden,pond,field,garden,river,garden,field,field)) for each sq I have multiple habitats each with an associated area. I want to aggregate the data frame so that

Re: [R] How to replace Inf by zero?

Although, in this case, the which() is unnecessary. x[x==Inf] - 0 See the online help, that is, help('[') and also the documentation, An Introduction to R, available online at CRAN. -Don At 2:58 PM +0100 5/29/09, marlene marchena wrote: Thanks a lot Andrea, it works! Marlene.

[R] Nested variables

Hello Im am working with a biological data including variables called Habitat and Site, example: Habitat Site Forest Low Forest Low Forest High Forest High I want to tell R that the Site variable is nested within the Forest variable (that it is not a new variable). Does

[R] excluding NAs in data frame without deleting rows

Hi all, I have a binary matrix with NAs included. Each row and column includes at least one NA, so I don't want to omit them. Is there a way to sum across rows and columns, ignoring the NAs but not deleting the row or column? If not, I suppose I can write a loop function, but I have learned

Re: [R] data manipulation involving aggregate

Try this: as.data.frame.table(xtabs(area ~ habitat + sq, DF), responseName = area.sum)[c(2:3, 1)] sq area.sum habitat 1 10 field 2 13 garden 3 13pond 4 10 river 5 21 field 6 22 garden 7 20pond 8 2

[R] R's documentation

Sometimes I get confused with R's documentation. It seems the documents is not maintained and updated well. Anyone has similar feeling? I don't mean to offend anyone. I hope R would get better and better. But documentation is really one very important factor which could attract people coming or

Re: [R] How to replace Inf by zero?

marlene marchena marchenamarlene at gmail.com writes: Hi R users, Someone knows how to replace Infinite value by zero. I have a vector with some Inf value and I want to substitute these values by zero to get the mean of the components of the vector. Any idea? Many thanks,

Re: [R] excluding NAs in data frame without deleting rows

use: sum(x,na.rm=T) like this: my.row.sums - apply(my.matrix,1,sum,na.rm=T) If you want to do across columns then use 2 instead of 1. Look at ?apply and ?sum. Adrian On Fri, May 29, 2009 at 7:46 AM, Wade Wall wade.w...@gmail.com wrote: Hi all, I have a binary matrix with NAs included.

Re: [R] Problem loading rJava

Josef.Kardos at phila.gov writes: I finally realized I didn't have Java installed on my computer, so I downloaded Java and tested that it works. I then attempted to reinstall rJava and load the package, but got this; utils:::menuInstallLocal() package 'rJava' successfully unpacked

Re: [R] excluding NAs in data frame without deleting rows

Wade Wall wrote: Hi all, I have a binary matrix with NAs included. Each row and column includes at least one NA, so I don't want to omit them. Is there a way to sum across rows and columns, ignoring the NAs but not deleting the row or column? If not, I suppose I can write a loop function,

Re: [R] R's documentation

On Fri, May 29, 2009 at 11:01 AM, Zheng, Xin (NIH) [C] zheng...@mail.nih.gov wrote: Sometimes I get confused with R's documentation. It seems the documents is not maintained and updated well. Anyone has similar feeling? I don't mean to offend anyone. I hope R would get better and better. But

Re: [R] R's documentation

Zheng, Xin (NIH) [C] wrote: Sometimes I get confused with R's documentation. It seems the documents is not maintained and updated well. Anyone has similar feeling? I don't mean to offend anyone. I hope R would get better and better. But documentation is really one very important factor which

Re: [R] R's documentation

Ok, pls take a look at '?median'. Can you see However, the default method makes use of 'sort' and 'mean'? Then let's look at 'median.default'. I do see 'sort'. But where is 'mean'? At first glance I didn't catch the exact point of its algorithm. Why not say more clearly that make use of partial

[R] Mean of lognormal in base-2

Hi, Does anyone know what the mean value of a lognormal distribution in base-2 is? I am simulating stochastic population growth and if I were working in base-e, I would do:lambda - 1.1 #multiplicative growth rates - 0.6 #stochasticity (std. dev)lognormal - rlnorm(10, log(lambda) - (s^2)/2,

Re: [R] Mean of lognormal in base-2

I apologize for the poor formatting of my previous post as the line breaks got stripped. I hope this is easier to read. Hi, Does anyone know what the mean value of a lognormal distribution in base-2 is? I am simulating stochastic population growth and if I were working in base-e, I would

Re: [R] R's documentation

Zheng, Xin (NIH) [C] wrote: Sometimes I get confused with R's documentation. It seems the documents is not maintained and updated well. Anyone has similar feeling? I don't mean to offend anyone. I hope R would get better and better. But documentation is really one very important factor which

Re: [R] R's documentation

Which version of R is this? From the BUGS section in NEWS for R 2.9.0 patched: o median.default() was altered in 2.8.1 to use sum() rather than mean(), although it was still documented to use mean(). This caused problems for POSIXt objects, for which mean() but

Re: [R] error message in plm

A closure is a standard R function (that is not a primitive function). This is presumably from package plm. You called plm() with three arguments, that is subset=na.omit by the matching rules. I think you intended na.action=na.omit. na.omit is a 'closure'. On Fri, 29 May 2009, Cecilia

[R] max.col specification

I'm not sure I understand the max.col spec or its rationale. In particular: * What is the significance and effect of assuming that the entries are probabilities, as they do not seem to be limited to the interval [0,1]? * In what contexts is it useful for max.col to consider numbers within a

Re: [R] R's documentation

Thanks for your information. I am curious why in 2.8.1 the document was not changed. That's easier than writing something in NEWS. But I DO see 'sum' rather than 'mean' in 2.9.0 now. It's not reverted yet as the NEWS saying. And it's still documented to use 'mean'. -Original Message-

Re: [R] R's documentation

On Fri, May 29, 2009 at 11:01 AM, Zheng, Xin (NIH) [C] zheng...@mail.nih.gov wrote: Sometimes I get confused with R's documentation. It seems the documents is not maintained and updated well. Anyone has similar feeling? I don't mean to offend anyone. I hope R would get better and better. But

Re: [R] Interface R -- Processing

On Fri, May 29, 2009 at 3:47 AM, simon_mail...@quantentunnel.de wrote: Dear Group members I was wondering whether there is any interface to use processing ( www.processing.org) to visualize R analyses? Nothing direct, to my knowledge. As far as I know, Processing is a high-level language

[R] remove object

Hi list I try to remove all object less one, this object is called index. I have many object with different names and pattern option in ls function may not remove this object why any word in index object repeats with other object. Anybody can give me one advise for this question Thank

[R] strsplit

I am trying split a string and use one part of it to label graphs. I am using strsplit for that. While I am able to split it, how do I access the separated parts. filName-chrI_2223 part- strsplit(filName,\\_) part [[1]] [1] chrI 2223 part[1] [[1]] [1] chrI 2223 I looked up the help archive

Re: [R] Backpropagation to adjust weights in a neural net when receiving new training examples

Thanks a lot for your answers. I can try to implement backpropagation myself with that information. But there isnt a function or method of backpropagation of error for new examples of training only to change the already created neural net? I want to implemennt reinforcement learning... Thanks in

Re: [R] strsplit

Try this: unlist(part)[1] or part[[1]][1] On Fri, May 29, 2009 at 2:09 PM, Nair, Murlidharan T mn...@iusb.edu wrote: I am trying split a string and use one part of it to label graphs. I am using strsplit for that. While I am able to split it, how do I access the separated parts.

Re: [R] Backpropagation to adjust weights in a neural net when receiving new training examples

Not that I know of. If you do come across any, let me know, or better still, email r-help. Good luck with what you are trying to do. Jude Ryan From: Filipe Rocha [mailto:filipemaro...@gmail.com] Sent: Friday, May 29, 2009 1:17 PM To: Ryan, Jude Cc:

[R] probably simple paste question

Dear R People: I have the following vector and am using the paste command: ya [1] 57 2 8 paste(stuff,ya,sep= ) [1] stuff 57 stuff 2 stuff 8 What I want to have is stuff 57 2 8 I also tried: yb - paste(cat(stuff,ya)) stuff 57 2 8 yb character(0) I have the feeling that it's really

[R] probably simple paste question solved: please ignore

Nothing like posting your snag to make you solve it! The answer is simply: c(stuff,ya) [1] stuff 572 8 Sorry, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: erinm.hodg...@gmail.com

Re: [R] probably simple paste question

On Fri, 2009-05-29 at 12:39 -0500, Erin Hodgess wrote: Dear R People: I have the following vector and am using the paste command: ya [1] 57 2 8 paste(stuff,ya,sep= ) [1] stuff 57 stuff 2 stuff 8 What I want to have is stuff 57 2 8 I also tried: yb - paste(cat(stuff,ya))

Re: [R] remove object

fernando espindola wrote: Hi list I try to remove all object less one, this object is called index. I have many object with different names and pattern option in ls function may not remove this object why any word in index object repeats with other object. Anybody can give me one advise

Re: [R] GTK Tooltips under Linux

Noted with thanks. Regards Ronggui 2009/5/29 Michael Lawrence mflaw...@fhcrc.org: On Thu, May 28, 2009 at 7:35 PM, Ronggui Huang ronggui.hu...@gmail.com wrote: Dear all, I want to set tool-tips for a gtkButton. I use the following code which works under Windows. However, it doesn't

Re: [R] Still can't find missing data - How do I get NA in xtabs with factors?

Let's see if I understand this. Do I iterate through x - factor(x, levels(c(levels(x), NA), exclude=NULL) for each of the few hundred variables (x) in my data frame? I tried to do this all at once and failed: ToyData Data1 Data2 Data3 Weight 101 Sam Red Banana1.1 102 Sam

Re: [R] remove object

fernando espindola wrote: Hi list I try to remove all object less one, this object is called index. I have many object with different names and pattern option in ls function may not remove this object why any word in index object repeats with other object. Anybody can give me one advise for

[R] maxtrix to permutation vector

Hi, Is there a way to convert a matrix into a vector representing all permutations of values and column/row headings with native R functions? I did this with 2 nested for loops and it took about 25 minutes to run on a ~700x700 matrix. I'm assuming there must be a smarter way to do this with

[R] frequence of patterns in a vector

Dear R users, Suppose I have a vector that consists of characters like ABC, A02, RCA, etc., and there are about 700 of possible characters. For example, x - c(ABC, ABC, ABC, A02, ABC, RCA, ABC, ABC) I'd like to get a frequency matrix that looks something like this: ABC 6 A02 1 RCA 1 I

[R] matrix to vector

Hi, Is there a way to convert a matrix into a vector representing all permutations of values and column/row headings with native R functions? I did this with 2 nested for loops and it took about 25 minutes to run on a ~700x700 matrix. I'm assuming there must be a smarter way to do this with

[R] matrix to vector

Hi, Is there a way to convert a matrix into a vector representing all permutations of values and column/row headings with native R functions? I did this with 2 nested for loops and it took about 25 minutes to run on a ~700x700 matrix. I'm assuming there must be a smarter way to do this with

Re: [R] remove object

You can try rm(list = ls()[!(ls() %in% index)]). -Christos -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Luc Villandre Sent: Friday, May 29, 2009 2:06 PM To: fernando espindola Cc: r-help@r-project.org Subject: Re: [R]

Re: [R] Nested variables

On Fri, May 29, 2009 at 7:50 AM, DanielWC daniel.carsten...@gmail.com wrote: Hello I am working with a biological data including variables called Habitat and Site, example: Habitat     Site Forest      Low Forest      Low Forest      High Forest      High I want to tell R that the

[R] Odd Behavior Out of setdiff(...) - addition of duplicate entries is not identified

I think I am using the improved version of setdiff(...) that handles data.frames, so I think some odd behavior was expected but this one is escaping me. It appears that the the addition of duplicate entries is not caught by the setdiff(...). Is this expected behavior? If so, is there

Re: [R] maxtrix to permutation vector

Not sure what you mean by permutations here. I think what you mean is that given a matrix m, you want a matrix whose rows are c(i,j,m[i,j]) for all i and j. You can use the `melt` function in the `reshape` package for this. See below. Hope this helps, -s library(reshape)

Re: [R] maxtrix to permutation vector

About this; m - matrix( 1:9, nr = 3 ) dimnames( m ) - list( c(d, e, f), c(a, b, c) ) data.frame( row = rep( rownames(m), ncol(m)), col = rep( colnames(m), each = nrow(m)), data = as.vector(m) ) row col data 1 d a1 2 e a2 3 f a3 4 d b4 5 e b5 6 f

Re: [R] maxtrix to permutation vector

Oh, I should have mentioned that the result of melt is a data.frame, not a matrix. You can convert with as.matrix if you like. I should also have shown that dimnames are carried along: m - matrix(1:4,2,2,dimnames=list(x=c('a','b'),y=c('x','y'))) m y x x y a 1 3 b 2 4 melt(m) x y

Re: [R] maxtrix to permutation vector

On Fri, 2009-05-29 at 11:08 -0700, Ian Coe wrote: Hi, Is there a way to convert a matrix into a vector representing all permutations of values and column/row headings with native R functions? I did this with 2 nested for loops and it took about 25 minutes to run on a ~700x700 matrix.

Re: [R] maxtrix to permutation vector

Ian Coe wrote: Hi, Is there a way to convert a matrix into a vector representing all permutations of values and column/row headings with native R functions? I did this with 2 nested for loops and it took about 25 minutes to run on a ~700x700 matrix. I'm assuming there must be a smarter

[R] strange behavior when reading csv - line wraps

Dear All, I am observing a strange behavior and searching the archives and help pages didn't help much. I have a csv with a variable number of fields in each line. I use dataPoints - read.csv(inputFile, head=FALSE, sep=;,fill =TRUE); to read it in, and it works. But - some lines are long and

[R] save plm coefficients

Hi R-helpers, I want to determine the coefficients of the following regression for several subsets, and I want to save it in a dataframe: The data is in «regaccdis», «regaccdis$caedois» is the column that defines the subsets and the function I have runned is

[R] apologies for the redundant emails

Sorry about the redundant emails. I was having some email issues and did not realize they would all go through. Thanks to everybody who answered my question. Regards, Ian CONFIDENTIALITY NOTICE: This e-mail communication (inclu...{{dropped:23}}

Re: [R] matrix to vector

Ian Coe wrote: Hi, Is there a way to convert a matrix into a vector representing all permutations of values and column/row headings with native R functions? I did this with 2 nested for loops and it took about 25 minutes to run on a ~700x700 matrix. I'm assuming there must be a smarter

[R] SEM/path question

Dear R People: Could someone recommend a baby book on path analysis and SEM, please? Or if someone has an example that they use in the classroom setting, that would be very cool too. Thanks in advance, Sincerely, Erin -- Erin Hodgess Associate Professor Department of Computer and

Re: [R] frequence of patterns in a vector

x - c(ABC, ABC, ABC, A02, ABC, RCA, ABC, ABC) table(x) x A02 ABC RCA 1 6 1 table(x)[c(ABC, A02, RCA)] x ABC A02 RCA 6 1 1 On May 29, 2009, at 2:15 PM, liujb wrote: Dear R users, Suppose I have a vector that consists of characters like ABC, A02, RCA, etc., and there are

Re: [R] matrix to vector

Not sure it is really matrix to vector but here are a few of attempts: abM-matrix(1:9, nrow=3) rownames(abM) - letters[1:3] colnames(abM) - letters[4:6] data.frame( cols=colnames(abM)[col(abM)[1:9]], rows= rownames(abM) [row(abM)[1:9]], vals=abM[1:9]) cols rows vals 1da1 2

Re: [R] maxtrix to permutation vector

Try this: m - matrix(1:9, 3, dimnames = list(R = letters[1:3], C = LETTERS[1:3])) as.data.frame.table(m, responseName = Value) R C Value 1 a A 1 2 b A 2 3 c A 3 4 a B 4 5 b B 5 6 c B 6 7 a C 7 8 b C 8 9 c C 9 On Fri, May 29, 2009 at 2:08 PM, Ian Coe

[R] Help installing sna on Solaris 10/Intel

Hi, I've been trying to install the statnet package on my Solaris 10/Intel system. I've been having problems with one of the dependencies, sna. During the compile, it always fails and complains about __builtin_isnan (please see below for output). I have tried installing this using Sun Studio

Re: [R] SEM/path question

Dear Erin, Although it's very old now, I like Duncan's Introduction to Structural Equation Modeling (Academic Press, 1975); for a more complete treatment, although it too is pretty old, Bollen, Structural Equations with Latent Variables (Wiley, 1989). I have notes and other materials from a short

Re: [R] Odd Behavior Out of setdiff(...) - addition of duplicate entries is not identified

Dear Jason, On Fri, May 29, 2009 at 2:48 PM, Jason Rupert jasonkrup...@yahoo.com wrote: I think I am using the improved version of setdiff(...) that handles data.frames, so I think some odd behavior was expected but this one is escaping me. It appears that the the addition of duplicate

Re: [R] SEM/path question

Dear Erin, I agree with John that one should be careful about taking SEMs too seriously. For another good book on sem and path models, look at John Loehlin's book. Address = {Mahwah, N.J.}, Author = {Loehlin, John C}, Edition = {4th}, Publisher = {L. Erlbaum

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