[R] Error RODBC: Random termination of R

Dear list, I get random terminations of R-2.6.2 when using RODBC-1.2_3 and a remote PostgreSQL-8.2.6 database, unixodbc-2.2.11-16, odbc-postgresql-1:08.01.0200-2.1 on Ubuntu Linux 7.10. The exact messages can be seen below. It seems that there is some memory corruption going on. But it seems

[R] Wavelets density estimation

Hello, i have a set of data X_1,...,X_n of an unknown density function f. I want to estimate the density function f with wavelets. Can I do this with the package wavethresh ? How ? Thanks. -- View this message in context:

[R] How to estimate the parameters of differential equations from data

Hello list I have a theoretical differential equation model (two coupled differential equations) describing the acidification of dairy cultures in milk: dX/dt = f(H, param)*X dH/dt = g(param)*dX/dt pH = -log10(H) I also have actual data of the same. I would like to estimate the parameters of

[R] problem with heatmap.2

Hi, temp1[1:6,] _XXX BB_XXX C_XXX D_XXX E_XXX SkHep1_XXX 500.75285 0.30630 0.56330 0.45755 0.496650.74685 630.35930-0.22725 0.04725 0.53955 0.563900.51170 69 -1.57515-1.67610 -1.61695 -1.11685 -0.00085 -1.89155 910.84640

Re: [R] help on using try() to catch an error

Neither of reduced_model not full_model will ever be NULL. If this fails, they inherit from class try-error. See ?try. So you want inherits(reduced_model, try-error) || inherits(full_model, try-error) On Thu, 14 Feb 2008, Juliet Hannah wrote: Dear R Users, I have the following glm,

Re: [R] How to estimate the parameters of differential equations fromdata

Try the odesolve package or the nlmeODE package which builds on odesolve. Best regards Frede Aakmann Tøgersen Scientist UNIVERSITY OF AARHUS Faculty of Agricultural Sciences Dept. of Genetics and Biotechnology Blichers Allé 20, P.O. BOX 50 DK-8830 Tjele Phone: +45 8999 1900 Direct: +45

Re: [R] finding source for a function

Or just read the article Ligges, U. (2006): R Help Desk: Accessing the Sources. R News 6 (4), 43-45. http://cran.r-project.org/doc/Rnews/ which was written particularly for answering this kind of questions. Best, Uwe Ligges Gabor Csardi wrote: RSiteSearch is your friend. E.g.:

[R] storing ggplot objects as components of a vector

Hi. I have a lot of plots that i need to store as components of a vector. Here you have an example DF-data.frame(A=rnorm(12),B=c(1:12),C=rep(c(1:4),each=3)) Q-c() length(Q)-3 PAC-geom_point(mapping=aes(x=A,y=B),data=DF[DF$C==1,]) P-ggplot()+PAC P #generates the plot Q[1]-P Warning

Re: [R] problem with heatmap.2

Ng Stanley wrote: Hi, temp1[1:6,] _XXX BB_XXX C_XXX D_XXX E_XXX SkHep1_XXX 500.75285 0.30630 0.56330 0.45755 0.496650.74685 630.35930-0.22725 0.04725 0.53955 0.563900.51170 69 -1.57515-1.67610 -1.61695 -1.11685 -0.00085

Re: [R] data manipulation for plotting

[EMAIL PROTECTED] wrote: Hi, i'd like to plot some data that I have with the value on the x axis and freq on the y axis. So, I need to calculate the freq a value is seen within my data vector for example, say i have a vector of data data=c(1,1,1,4,5,5,6) I

Re: [R] storing ggplot objects as components of a vector

Gallego Liberman, Matias wrote: Hi. I have a lot of plots that i need to store as components of a vector. Here you have an example DF-data.frame(A=rnorm(12),B=c(1:12),C=rep(c(1:4),each=3)) Q-c() length(Q)-3 You need a list, hence replace the last two lines by: Q - vector(mode=list,

[R] Latent class analysis

Which package(s) contain something on latent class analysis? Tom -- ++ | Tom Backer Johnsen, Psychometrics Unit, Faculty of Psychology | | University of Bergen, Christies gt. 12, N-5015 Bergen, NORWAY | | Tel : +47-5558-9185

Re: [R] storing ggplot objects as components of a vector

You'll need to store it in a list rather than a vector. library(ggplot2) DF-data.frame(A=rnorm(12),B=c(1:12),C=rep(c(1:4),each=3)) Q - list() PAC-geom_point(mapping=aes(x=A,y=B),data=DF[DF$C==1,]) P-ggplot()+PAC Q[[length(Q) + 1]] - P Q[[1]] You could shorten this into library(ggplot2)

Re: [R] Latent class analysis

check function lca() in package 'e1071'. Best, Dimitris Dimitris Rizopoulos Ph.D. Student Biostatistical Centre School of Public Health Catholic University of Leuven Address: Kapucijnenvoer 35, Leuven, Belgium Tel: +32/(0)16/336899 Fax: +32/(0)16/337015 Web: http://med.kuleuven.be/biostat/

[R] question about calling winbugs in R

Dear All: Do you have any experience on calling winbugs in R enviorment? I uploaded R2winbgus, pktools, BRugs, ect. in order to call winbugs. In the end, I try to use bugs(). The error message still displays that bugs() can not find. Do you have any similar issue? If so, could you give

Re: [R] For Subset or Reshaping the Table

Try this: cbind(Row=rownames(x), stack(x)[,2:1])[cbind(Row=rownames(x), stack(x)[,2:1])[,3]3,] On 14/02/2008, dinesh kumar [EMAIL PROTECTED] wrote: Hi R users I am a new user in the field of R. I want to subset or reshape a data.frame. For example I have a matrix like A B C D E

Re: [R] LMER

your r2 model corresponds to method = Laplace. r4=lmer(Y~X+(1|Subject),family=binomial(link=logit),method=Laplace) is equivalent to r2. Bests, Abderrahim - Original Message - From: Daniel Malter [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Friday, February 15, 2008 12:50 AM

[R] Help, Statistics Question. Testing for equality of frequncies of an event

Hi All, I have a basic statistics question you might be able to help. I have some data collected within a single population (say of chronic illness) over a period of time (number under observation is constant, say 100 subjects). The question is how could I test whether the frequency of an

Re: [R] question about calling winbugs in R

Xin wrote: Dear All: Do you have any experience on calling winbugs in R enviorment? I uploaded So you installed them, I assume? R2winbgus, pktools, BRugs, ect. in order to call winbugs. In the end, I try to use bugs(). The error message still displays that bugs() can not find. What

Re: [R] Latent class analysis

and also check packages: flexmix, polca, depmix and a few others ... On 15 Feb 2008, at 11:01, Dimitris Rizopoulos wrote: check function lca() in package 'e1071'. Best, Dimitris Dimitris Rizopoulos Ph.D. Student Biostatistical Centre School of Public Health Catholic University of

[R] Poisson-lognormal probability calculations

Hi, just for the record, although I don't think it's relevant (!) - sessionInfo() R version 2.6.0 (2007-10-03) i386-pc-mingw32 locale: LC_COLLATE=English_United Kingdom.1252;LC_CTYPE=English_United Kingdom.1252;LC_MONETARY=English_United

Re: [R] Latent class analysis

Thanks! Ingmar Visser wrote: and also check packages: flexmix, polca, depmix and a few others ... On 15 Feb 2008, at 11:01, Dimitris Rizopoulos wrote: check function lca() in package 'e1071'. Best, Dimitris Dimitris Rizopoulos Ph.D. Student Biostatistical Centre School of

Re: [R] setting color ranges

samsr wrote: Hi, I need to plot a matrix using image() such that negative values are easily distinguishable from posittive values, while also maintaining a gradation in color with magnitude. How can I set ranges for colors in order to achieve this. Thanks. Hi Sam, This will give you red

[R] GAUSS (Aptech) R

Hi Is there a correspondance between R commands and other software commands (GAUSS mainly).. I'd like to translate some Gauss into R.. Thanks for your help Naji __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help

Re: [R] LMER

Could you send us the output of sessionInfo() please so we can see which version of the lme4 package you are using? In recent versions, especially the development version available as install.packages(lme4, repos = http://r-forge.r-project.org;) the PQL algorithm is no longer used. The Laplace

[R] Controling width of boxes in boxplots

Hi, I want to add boxplots to a scatterplot: plot(x,y, xlim=c(80,120),ylim=c(80,120)) boxplot(y,add=TRUE,at=118) boxplot(x,add=TRUE,at=118,horizontal=TRUE) How can I control the width of the boxes (say, I'd like them to be of width 3 in the variables' scales). I've tried the width parameter but

[R] help on loop function

Dear lists, Anysuggestion on how to write a loop function which has nx2 matrix as an input, where each of the row represents an interval. the function should return a mx2 matrix containing the no matched interval of x?? i've tried my own function but it's only applies for 2x2 matrix.

[R] Error with stop()

Hello; I've used stop() previously without any problem. Now, I'm using a condition and getting an error when stop() is called. Mi condition is: if(dim(r.temp)[1] != (length(jul.names)+6)) stop(buffered data not available) An the R' response is: source(my_program.R) Error in

Re: [R] Controling width of boxes in boxplots

Try this: x - sample(5, 100, rep=T) y - rnorm(100) plot(x,y, xlim=c(min(x)-.5, max(x)), ylim=c(min(y), max(y)+1)) boxplot(y, pars=list(boxwex=0.3), at=min(x)-.5, add=T) boxplot(x, pars=list(boxwex=0.3), at=max(y)+1, add=T, horizontal=T) On 15/02/2008, Marcin Kozak [EMAIL PROTECTED] wrote: Hi,

[R] No response for help

Dear R admin, I sent so many emails but none was posted. What happened? Thanks Ilham __ 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/posting-guide.html and

Re: [R] write output in a custom format

Perhaps I am missing the obvious, but can't you simply write a small function that, given each particle object, returns a string with the required output format (probably a couple of paste calls with sep and collapse set), and then use sapply and this function on the list of particles to

Re: [R] Analysis with spatstat and Kcross() requires to much memory

Rainer M Krug r.m.krug at gmail.com writes: Hi I am running analysis with Kcross from the package spatstat and I am getting a message that R can not allocate enough memory for a vector of 900MB. R seems to be running towards the 2GB limit per process. The dataset is not to big (ca

[R] lmer in package of lme4

Dear Sir/madam, I use lmer to extract model in your package of lme4. It seems works well. But the problem is when I use anova/summary the extracted model, no p-value is shown at all. In previous version(nlme), I mainly use p-value to judge which term is significant or not, and then make a

[R] Softmax in nnet

Hi R help, I run my data in nnet with skip layer, factor response (with 0 1 values) and explicitly put softmax=T to compare the result of the default nnet with no softmax specification. I assume this should give me the same result. I got the result the default one, but not the softmax version

[R] Softmax in nnet

Hi R help, I run my data in nnet with skip layer, factor response (with 0 1 values) and explicitly put softmax=T to compare the result of the default nnet with no softmax specification. I assume this should give me the same result. I got the result the default one, but not the softmax version

[R] lineplot.CI problem

Hi List, I have a problem plotting data using the lineplot.CI command in the sciplot package. I want to plot the data of 2 experimental cases using different lines (traces). Time is on the X-axis. The tricky thing is that the data collection in the second case started later than for the first

[R] function similar to str_replace() in php.

Dear expeRt, I would like to know whether a function similar to str_replace() in php exists in R. Looking forward to hearing from you. Best, = Center of Excellence for Science and Innovation Studies, Royal Institute of Technology

Re: [R] function similar to str_replace() in php.

I don't know php very well, but perhaps you need ?sub Gabor On Fri, Feb 15, 2008 at 03:54:19PM +0100, Dong-hyun Oh wrote: Dear expeRt, I would like to know whether a function similar to str_replace() in php exists in R. Looking forward to hearing from you. Best,

Re: [R] LMER

Thanks for your replies. My real problem is that, for my real data, I get basically the same results from r2 and r3 (so to speak), but the coefficient estimates and significance levels for r1 are very different from those of r2 and r3. And therefore, I do not know which of the results to trust and

Re: [R] Controling width of boxes in boxplots

Have a look at boxwex in boxplot. Something like boxplot(y,add=TRUE,at=118, boxwex=3) may give you what you want. --- Marcin Kozak [EMAIL PROTECTED] wrote: Hi, I want to add boxplots to a scatterplot: plot(x,y, xlim=c(80,120),ylim=c(80,120)) boxplot(y,add=TRUE,at=118)

Re: [R] Softmax in nnet

Looks like you meant to use 'TRUE' not 'T'. The latter is probably a variable you defined of length 1. Double-posting at least halves your chances of getting help, so please stop doing it. On Fri, 15 Feb 2008, G Ilhamto wrote: Hi R help, I run my data in nnet with skip layer, factor

Re: [R] anyone know how to plot histograma and line in the same graph

Try this: hist(x[,1], ylim=c(0,max(x[,2]))) lines(x[,2], col=blue, lty=2) On 15/02/2008, Xin [EMAIL PROTECTED] wrote: Dear: I have two series data, which are: p1-obs p1-exp 13 13 20 23.296 22 18.139 19 14.972 10 12.576 16 10.658 8

Re: [R] lmer in package of lme4

Rather than go over all of this again, see here http://wiki.r-project.org/rwiki/doku.php?id=guides:lmer-tests -- View this message in context: http://www.nabble.com/lmer-in-package-of-lme4-tp15501802p15502440.html Sent from the R help mailing list archive at Nabble.com.

Re: [R] lmer in package of lme4

WANG ping.wang at newcastle.ac.uk writes: I use lmer to extract model in your package of lme4. It seems works well. But the problem is when I use anova/summary the extracted model, no p-value is shown at all. In previous version(nlme), I mainly use p-value to judge which term is significant

Re: [R] lineplot.CI problem

On Fri, 2008-02-15 at 15:18 +0100, Dieter Vanderelst wrote: Hi List, I have a problem plotting data using the lineplot.CI command in the sciplot package. I want to plot the data of 2 experimental cases using different lines (traces). Time is on the X-axis. The tricky thing is that the

Re: [R] lineplot.CI problem

On Fri, Feb 15, 2008 at 8:18 AM, Dieter Vanderelst [EMAIL PROTECTED] wrote: Hi List, I have a problem plotting data using the lineplot.CI command in the sciplot package. I want to plot the data of 2 experimental cases using different lines (traces). Time is on the X-axis. The tricky

Re: [R] contingency table

Have a look at length(iris$Species) length(prev) --- Carla Rebelo [EMAIL PROTECTED] wrote: Hello! May you help me? I'm trying to do a contingency table using this data(iris) library(rpart) modelo - rpart(Species ~., iris) prev - predict(modelo, iris) Finally the contingency

Re: [R] Help, Statistics Question. Testing for equality of frequncies of an event

[EMAIL PROTECTED] wrote in news:[EMAIL PROTECTED] orld.com: Hi All, I have a basic statistics question you might be able to help. I have some data collected within a single population (say of chronic illness) over a period of time (number under observation is constant, say 100

[R] Transfer Crosstable to Word-Document (2. attempt)

# Dear list, # I am an R-beginner and # spent the last days looking for a method to insert tables produced # with R into a word document. I thought about SPPS: copy a table from # an SPO-file and paste it into a word document # (if needed do some formatting with that table). # Annother idea was,

[R] OT: installing the XML package - xmlOutputBufferCreateBuffer problem

Hi, first of, my apologies for the possibly off-topic message regarding a problem when installing the XML package (I meant to post at omegahat- help, but I get 404 at http://www.omegahat.org/mailman/listinfo) When installing the XML package using: install.packages(XML) everything seems

[R] lmList, tapply() and lm()

Howdee, *** I know that the lmList() function exists, yet I don't want to use it. *** Would anyone be kind enough to tell how I can apply the function lm() to each level of a given factor so to obtain the intercept and slope for each factor level within a matrix? For instance, suppose a

Re: [R] Transfer Crosstable to Word-Document

Here are 2 ways: 1. Display it on the screen and hit the PrintScreen button. Then paste that into Word and use Word's image editor to crop it and expand or shrink it appropriately. 2. Run this in R: capture.output(CrossTable(...whatever...), file = clipboard) Paste the clipboard into Word and

[R] Extract from matrix

Hi all. I have certain problem with the extraction of data from matrices. I know how extract elements from a matrix, but what I would like to do is to extract a concrete number, not an element. For example if I have this matrix X: [,1] [,2] [,3] [,4] [1,]3 13 23 33 [2,]9 19

[R] Behaviour of integrate (was 'Poisson-lognormal probability calcul ations')

Hi again, Adding further information to my own query, this function gets to the core of the problem, which I think lies in the behaviour of 'integrate'. - function (x, meanlog = 0, sdlog = 1, ...) { require(stats) integrand - function(t, x, meanlog,

Re: [R] OT: installing the XML package - xmlOutputBufferCreateBuffer problem

You need a later version of libxml2 (or at least, a different one as possibly an older one would also work). I met this on Windows -- 2.6.23 is old (more than 2 years), and I believe 2.6.28, 2.6.30 and 2.6.31 work. The Omegahat lists have been defunct for a while, AFAIK. I'd have used

Re: [R] Transfer Crosstable to Word-Document

Thank you Gabor, but with 1. or 2. I don´t get a table, which can be changed and formatted using the WORD table functions (like changing column width and formatting text in rows). The result of 1. ist an bitmap and the result of 2. an ASCII-Table A rich formatted (*.rtf) table/object would be

Re: [R] RGTK2 and glade on Windows - GUI newbie

That would be a good idea. I'm finishing up a much more comprehensive guide that will become available soon. Thanks for the suggestion, Michael 2008/2/14 Felix Andrews [EMAIL PROTECTED]: I just discovered a good introduction to the RGtk2 package: RShowDoc(overview2, package=RGtk2) I have

Re: [R] lmList, tapply() and lm()

On 2/15/2008 11:00 AM, Marc Belisle wrote: Howdee, *** I know that the lmList() function exists, yet I don't want to use it. *** Would anyone be kind enough to tell how I can apply the function lm() to each level of a given factor so to obtain the intercept and slope for each factor

[R] predict.lm with matrix as newdata

Z is a matrix and when I run the following line, it creates a prediction estimate using each column, how can I get it an estimate for each individual number. I have tried changing Z to a data.frame, but this does not do it either. model.lm-lm(w~x) pred.est - predict.lm(model.lm,

Re: [R] No response for help

You will have better luck in soliciting responses if you follow the line at the bottom of every r-help message and post minimal reproducible code. Also read the posting guide. On Fri, Feb 15, 2008 at 8:29 AM, G Ilhamto [EMAIL PROTECTED] wrote: Dear R admin, I sent so many emails but none was

Re: [R] Transfer Crosstable to Word-Document

I usually use the write.table() function (with tab as the delimiter) to write to a text file, then copy/paste into Word, then use Word's convert text to table command. Obviously, if one needs to do this for many, many, tables, the amount of manual manipulation is excessive. That's when

Re: [R] Extract from matrix

Try also: mat[mat==29] - NA On 15/02/2008, _Fede_ [EMAIL PROTECTED] wrote: Hi all. I have certain problem with the extraction of data from matrices. I know how extract elements from a matrix, but what I would like to do is to extract a concrete number, not an element. For example if I

[R] How to estimate weekly Variance

Dear All: Using the Excel formula below I am able to estimate daily variance(Daily VarPD)for PD,but I can't figure out how to estimate the Weekly variance for PD. Any hints? Daily VarPD = (PD * (1 - TD))/TD + VarTD * ((PD*(1-TD)+ PD^2*TD))/TD^3 WK TDVARTD PD Daily

Re: [R] History of R

On Fri, Feb 15, 2008 at 1:53 PM, Kathy Gerber [EMAIL PROTECTED] wrote: Earlier today I sent a question to Frank Harrell as an R developer with whom I am most familiar. He suggested also that I put my questions to the list for additional responses. Next month I'll be giving a talk on R as

[R] ggplot2 used in a function - variable scope/environment

Hi everybody! I'm trying to use ggplot2 to return a plot from a function (so I can add something or alter it then). Unfortunately, if I add a mapping to a layer in the function, the variable *name* is stored in the layer, rather than the variable's *value* - so that after the function returns

Re: [R] wire.frame tick labels from matrix

On 2/15/08, Sundar Dorai-Raj [EMAIL PROTECTED] wrote: Marlin Keith Cox said the following on 2/15/2008 11:39 AM: Dear R Users, close to the end of this I used wireframe to create a 3D plot from a matrix. The x and y axis tick labels (1-6) for each were created from the matrix being a

[R] Conditional Autoregressive (CAR) model simulation

Hi all ! I would like to simulate spatial lattice/areal data with a conditional autoregressive (CAR) structure, for a given neighbouring matrix and for a autocorrelation rho. Is there any package or function in R to perform it ? I found the function CARsimu in the hdeco library, but this is not

[R] wire.frame tick labels from matrix

Dear R Users, close to the end of this I used wireframe to create a 3D plot from a matrix. The x and y axis tick labels (1-6) for each were created from the matrix being a 6X6 matrix. I need the axis tick labels to be the row and column headings which you can see in the output (mat.x). I have

Re: [R] wire.frame tick labels from matrix

Marlin Keith Cox said the following on 2/15/2008 11:39 AM: Dear R Users, close to the end of this I used wireframe to create a 3D plot from a matrix. The x and y axis tick labels (1-6) for each were created from the matrix being a 6X6 matrix. I need the axis tick labels to be the row and

Re: [R] Extract from matrix

Look this can help you: mtz-matrix(1:20,4,5) mtz [,1] [,2] [,3] [,4] [,5] [1,]159 13 17 [2,]26 10 14 18 [3,]37 11 15 19 [4,]48 12 16 20 mtz[2,3] [1] 10 mtz [,1] [,2] [,3] [,4] [,5] [1,]159 13 17 [2,]26

[R] Data Mining Competition 2008

Dear Colleagues, please help distribute the following announcement of a data mining competition. Thanks, -XG = Data Mining Competition 2008 = Website: http://dms.stat.ucf.edu/competition08/home.htm Department of Statistics Actuarial

Re: [R] Clustering with ordinal data

On Fri, 2008-02-15 at 10:45 -0800, Tim Smith wrote: Hi, Is there any clustering package in R that can cluster with ordinal data? thanks! daisy() in recommended package 'cluster' can generate dissimilarities for ordinal data using Gower's general (dis)similarity coefficient for mixed data.

Re: [R] Transfer Crosstable to Word-Document

In that case you shouldn't be using CrossTable in the first place. Suggest you look into the functions mentioned under See Also in ?CrossTable or look at the source of CrossTable and modify it for your purposes. On Fri, Feb 15, 2008 at 11:52 AM, [EMAIL PROTECTED] wrote: Thank you Gabor, but

Re: [R] Extract from matrix

?which Does something like this help? which(aa==29) aa[ -which(aa==29)] --- _Fede_ [EMAIL PROTECTED] wrote: Hi all. I have certain problem with the extraction of data from matrices. I know how extract elements from a matrix, but what I would like to do is to extract a concrete

Re: [R] No response for help

On 15-Feb-08 13:29:06, G Ilhamto wrote: Dear R admin, I sent so many emails but none was posted. What happened? Thanks Ilham Are you subscribed to r-help? If not, you will not receive copies of any mails sent out by the list (though if a non-subscriber mails to the list, the mail will be

Re: [R] Transfer Crosstable to Word-Document

Udo, CrossTable() knows nothing about the proprietary formats of Word tables. The output is designed for the R console, using a fixed width (monospace) font. The cell boundaries are drawn using standard ASCII characters. There are no plans at present to modify the format of the output to

Re: [R] Conditional Autoregressive (CAR) model simulation

See spautolm function in spdep package On 15/02/2008, Dae-Jin Lee [EMAIL PROTECTED] wrote: Hi all ! I would like to simulate spatial lattice/areal data with a conditional autoregressive (CAR) structure, for a given neighbouring matrix and for a autocorrelation rho. Is there any package

[R] anyone know how to plot histograma and line in the same graph

Dear: I have two series data, which are: p1-obs p1-exp 13 13 20 23.296 22 18.139 19 14.972 10 12.576 16 10.658 8 9.0794 4 7.7625 3 6.6536 5 5.7141 7 4.9146 4 4.2321 0 3.648 4 3.1471 4

Re: [R] lmList, tapply() and lm()

Here is an example I just did. I _LOVE_ lmList(). It is such a great convenience compared to the following. But right now it doesn't work for family=binomial, so I had to do it differently. This is not your example, but it should give you an idea. The [[5]] was because I was interested only

[R] Quadratic Programming

Hi, I am using solve.QP (from quadprog) to solve a standard quadratic programming problem: min_w -0.5*w'Qw st ... I would like solve.QP to do two things: 1) to start the optimization from a user-supplied initial condition; i.e., from a vector w_0 that satisfies the constraints, and 2) to return

Re: [R] History of R

For those of you who want to learn more about the history of the R project: There will be an invited lecture by John Fox and Kurt Hornik at this year's useR! conference in Dortmund in August (...unfortunately a bit too late for Kathy) about The Past, Present, and Future of the R Project see

[R] copying Quartz graphics windows on MAC

I have R 2.6.2 installed on a Mac Probook with the lastest version of Leopoard (including recent graphics update). When I use either command-C or the Edit menu to copy the contents of an active quartz graphics window, the contents of the window disappears (much like cut). Has anyone had

Re: [R] History of R

Dear Kathy, As Achim has mentioned, I've been doing interviews with members of the R Core team and with some other people central to the R Project. Although I haven't entirely organized and finished reflecting on this material, the following factors come immediately to mind: (1) Doug has already

Re: [R] Quadratic Programming

G'day Jorge, On Fri, 15 Feb 2008 17:51:16 -0500 Jorge Aseff [EMAIL PROTECTED] wrote: I am using solve.QP (from quadprog) to solve a standard quadratic programming problem: min_w -0.5*w'Qw st ... I would like solve.QP to do two things: 1) to start the optimization from a user-supplied initial