similar to: Replacing NAs with 0 for variables with the same ending

Dear all, I'm looking for a way to solve a simple optimization problem with a nonlinear constraint. An example would be max x s.t. y = x * T ^(x-1) where y and T are known values. optim() and constrOptim() do only allow for box or linear constraints, so I did not succedd here. I also found hints to donlp2 but this does not seem to be available anymore. Any hints are welcome,

Dear all, Hope this question is not too trivial... In order to correct standard errors from an estimation of a fixed effects regression model y need to extract the vector of standard errors of the coefficients of a simple linear model estimated using lm(var1~var2+var3+var4) Unfortunately I can't find out the corresponding function. Thank you very much for your help. Uli -- Uli

Dear all, I'm just trying to create plots for all variables in a dataframe (named "x") using the following: png() apply(x,2,hist) Just as intended, it produces one plot for each variable. Unfortunately, the main title of each graph is "Histogram of newX[,i]" instead of "Histogram of name of variable". This makes it impossible to assign the graphs to the

Dear all, Within a larger script I use the following code to produce barplots for all variables contained in a dataframe "type3m": for(xn in names(type3m)) barplot(table(type3m[[xn]]), main = paste ("Barplot of", xn), width=0.75,legend.text=barnamesm, xlim=c(0,4),ylim=c(0,400)) The plots are produced and printed into a *.ps file. However, R gives an error

Hello Lady or Sir, I want to do model selection with 'step' function. But there is a trouble to me. For example, there are 5 independent variables, X0,X1,X2,X3 and X4; and 1 dependent variable y. I want to run stepwise regression y ~ X0 + X1 + X2 + X3 + X4, and I want to keep X0 always in the model. Every time when I run command 'step' with 'keep', error information

Dear Helpers, I have a dataset X, with no missing values, everything is in order, R reads it correctly, and I have already done some statistical analyses on the dataset. The data are in order by date (six sampling dates in one year, earliest to latest) and I now want to generate boxplots for each parameter for each date. However, R outputs the boxplots in some order that I do not understand (eg.

Dear useRs, I am glad to announce that the new R package "hypred", initial version 0.1, is now available on CRAN. "hypred" is a package for simulating high-density SNP data. Its main function, "hypredRecombine" is intended to be used as a "Software tool" in larger programs that simulate complex populations. The focus of the package is on producing

Dear useRs, I am glad to announce that the new R package "hypred", initial version 0.1, is now available on CRAN. "hypred" is a package for simulating high-density SNP data. Its main function, "hypredRecombine" is intended to be used as a "Software tool" in larger programs that simulate complex populations. The focus of the package is on producing

Hi all, I try to boot an msdos system using pxelinux and memdisk on my PC engines Wrap-2.c card and I have problems with it This is what I see: PXELINUX 3.11 Debian-2006-03-16 Copyright (C) 1994-2005 H. Peter A boot: msdos Loading memdisk.... Loading images/msdos/msd622bd.dosim......................... Ready. dp83815: Setting full-duplex based on negotiated link capability. MEMDISK 3.11

Hello everybody, shame on me if I have overlooked something (CRAN, StatLib), but I think I've searched carefully. Maybe it's just too obvious to see for me (happens frequently). Is a function available that extracts multiple comparison of means from objects produced by "aov()" ? Sorry if the term is not correct, I translated from german word by word ("Multiple

Hi, it looks like you have something really messed up on your system. The size of the file is 1243 bytes (from strace) but 0 bytes are being read. If you had no permission to read the strace would have looked like this: open("/etc/samba/smb.conf", O_RDONLY|O_LARGEFILE) = -1 EACCES (Permission denied) A quick look at the source code reveals: /etc/samba/smb.conf is opened in file_load

Hi List, i am locking for a GUI for R. I have a Debian Woody 3.0 and running R 1.5.1. In office i am using SPSS 9.0 for several years now after Systat for short time and now i would use a statistic software under Linux at home. It seems that R could be that what i am looking for, but i have problems to understand how it works or better explained i would prefer using a good grafic interface.

Hi everybody! I've a large dataset, about 2 Mio entries of the format which I would like to import into a frame: <integer><integer><float><string><float><string><string> Because to the huge data amount I've choosen a binary format instead of a text format when exporting from Matlab. My import function is attached below. It works fine for only

John, > I would like to figure out how to do this > gpedit.msc+AD+gpc+gpt magic for > win2k/xp with linux+samba(2.2/3.0/tng)+openldap and is it possible at > all? We use local (!) GPOs on our Win2k clients with great success: - log on to "master" workstation as administrator - create a link to the "C:\WINNT\system32\GroupPolicy" folder on your administrator's

Hello everybody, I frequently have to produce barplots from variables the natural variation of which is far away from zero. A typical range would be, say from -16 to -28. So, the following example should give an "honest" presentation: x<-c(-20,-22,-21,-28) barplot(x,beside=T,ylim=c(-18,-30)) But using anything else but "0" for the first element of ylim leads to strange

Hi, I posted this problem before in more detail (http://marc.theaimsgroup.com/?l=samba&m=104756899022766&w=2) but received no response. At the current state of Smaba 3.0 and Samba-TNG these two seem to be incomaptible. Samba 3.0 can't join a TNG controlled domain. I think this should affect a lot of installations as TNG as a controller and "stable" as file/printserver seem

Quick informal poll: what is everyone's favorite text editor for working with R? I'd like to hear from people who are using editors that have some level of direct R interface (e.g. Tinn-R, Komodo+SciViews). Thanks! --j -- Jonathan A. Greenberg, PhD Postdoctoral Scholar Center for Spatial Technologies and Remote Sensing (CSTARS) University of California, Davis One Shields Avenue The

Hello, i am not able to download files with kazaa lite. I have a 400 mhz AMD with one patition for windows win98 Fat16, browser is Internet Explorer 5, and other 4 for linux debian 3.0 kernel 2.2.19. I installed wine 0.0.20020411-1 and kazaa lite 2.0. I mount my original windows partition to /home/user/.wine/fake_windows. I start kazaa with: wine --dll

Hello everybody, since I installed R-0.90.0 (Linux 2.0.25) I have problems with generating printable output with 'help()'. Default output to the terminal ('echo $PAGER' gives 'less') works o.k.. When invoking 'help(topic,offline=T)' all the usual procedures seem to start: 'top' reports invocation of latex as well as of dvips. But after finishing there is

Hello, suppose I have a multivariate multiple regression model such as the following: > DF<-data.frame(x1=rep(c(0,1),each=50),x2=rep(c(0,1),50)) > tmp<-rnorm(100) > DF$y1<-tmp+DF$x1*.5+DF$x2*.3+rnorm(100,0,.5) > DF$y2<-tmp+DF$x1*.5+DF$x2*.7+rnorm(100,0,.5) > x.mlm<-lm(cbind(y1,y2)~x1+x2,data=DF) > coef(x.mlm) y1 y2 (Intercept)