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Hello to everyone, I have 2 problems and would be very pleased if anyone can help me: 1) When I use the package "systemfit" for SUR regressions, I get two different variance-covariance matrices when I firstly do the SUR regression ("The covariance matrix of the residuals used for estimation") and secondly do the OLS regressions. In the manual for "systemfit" on page

...t;3" [,1] [,2] [1,] 3 3 [2,] 6 6 This exactly does what I want and really speeds up the calculation, but I wonder if there is an easier way to make apply() return a list. Thanks for your help, Arne -- Arne Henningsen Department of Agricultural Economics University of Kiel Olshausenstr. 40 D-24098 Kiel (Germany) Tel: +49-431-880 4445 Fax: +49-431-880 1397 ahenningsen at agric-econ.uni-kiel.de http://www.uni-kiel.de/agrarpol/ahenningsen/

...ys ago [3], but we did not receive an answer yet. References: [1] http://cran.r-project.org/src/contrib/Descriptions/micEcon.html [2] http://www.micecon.org/ [3] http://tolstoy.newcastle.edu.au/R/e3/devel/07/10/0222.html -- Arne Henningsen Department of Agricultural Economics University of Kiel Olshausenstr. 40 D-24098 Kiel (Germany) Tel: +49-431-880 4445 Fax: +49-431-880 1397 ahenningsen at agric-econ.uni-kiel.de http://www.uni-kiel.de/agrarpol/ahenningsen/ -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes...

Is there a package in R that handles general linear (in-)equality + box constrained optimization? If it is not there, could anyone advise me which way to go? And/or point me to packages that solve these problems partially? best, ingmar -- Ingmar Visser Department of Psychology, University of Amsterdam Roetersstraat 15, 1018 WB Amsterdam The Netherlands http://users.fmg.uva.nl/ivisser/ tel:

...om do I have to ask wether I am allowed to put these data in a GPLed R package? (Mr. Mroz, Mr. Greene, STATA, University of Michigan (PSID), . . . ) @John: Do you have any license information on these data? Thanks, Arne -- Arne Henningsen Department of Agricultural Economics University of Kiel Olshausenstr. 40 D-24098 Kiel (Germany) Tel: +49-431-880 4445 Fax: +49-431-880 1397 ahenningsen at agric-econ.uni-kiel.de http://www.uni-kiel.de/agrarpol/ahenningsen/

Hi there, I need to plot an illustrative figure without ticks, x, y labels in R. I managed to get the ticks removed, but had no luck with x, y labels. Any suggestions would be much appreciated. Jin Li [[alternative HTML version deleted]]

...t;. Thus, I think that our way to specify "predict.systemfit" might be OK in spite of this warning. What should I do? Can I ignore this warning? What will Kurt answer when we submit it ;-) ? Best wishes, Arne -- Arne Henningsen Department of Agricultural Economics University of Kiel Olshausenstr. 40 D-24098 Kiel (Germany) Tel: +49-431-880 4445 Fax: +49-431-880 1397 ahenningsen at agric-econ.uni-kiel.de http://www.uni-kiel.de/agrarpol/ahenningsen/

Hello I know how read a file in excel format into a R data frame using the RODBC library, but I don't know how write a R data frame in excel format. I don't understand the instructions from RODBC user manual. To read an excel file I use. library(RODBC); conex<-odbcConnectExcel("fis_quim.xls"); sqlTables(conex); data<-sqlFetch(conex,"hoja1"); Suppose I

...I have to change the file name and/or the name of the base directory before uploading the package to CRAN? I use R version 2.3.1 (2006-06-01) on i686-pc-linux-gnu. The same happens with R version 2.4.0 RC. Thanks, Arne -- Arne Henningsen Department of Agricultural Economics University of Kiel Olshausenstr. 40 D-24098 Kiel (Germany) Tel: +49-431-880 4445 Fax: +49-431-880 1397 ahenningsen at agric-econ.uni-kiel.de http://www.uni-kiel.de/agrarpol/ahenningsen/

...return( tobit2( ..., method = "2step" ) ) } Does anybody have a better suggestion? How is this implemented in other software packages? What do you think is the best option? Thanks, Arne Henningsen Ott Toomet -- Arne Henningsen Department of Agricultural Economics University of Kiel Olshausenstr. 40 D-24098 Kiel (Germany) Tel: +49-431-880 4445 Fax: +49-431-880 1397 ahenningsen at agric-econ.uni-kiel.de http://www.uni-kiel.de/agrarpol/ahenningsen/

...and releasing your R code for > demand analysis. Is there a web page titled "R for economists"! :-) If > there isn't, I'll be happy to build and maintain one, and put a link > to your code there. -- Arne Henningsen Department of Agricultural Economics University of Kiel Olshausenstr. 40 D-24098 Kiel (Germany) Tel: +49-431-880 4445 Fax: +49-431-880 1397 ahenningsen at agric-econ.uni-kiel.de http://www.uni-kiel.de/agrarpol/ahenningsen/

Hi there fellow R-users, Im seeing some strange behaviour when I multiply a vector by a matrix Here is my script: > tr 1 2 3 4 5 6 0.2217903 0.1560525 0.1487908 0.1671354 0.1590643 0.1471667 > > ex1 a b c d e f 1 0.2309579 -3.279045 -0.6694697 -1.1024404 0.2303928 -1.5527404 2

...ts in all possible cases. So please check these functions (results, code) and send me bug reports or patches. You are also invited to provide further functions, e.g. tools for other functional forms. Best regards, Arne -- Arne Henningsen Department of Agricultural Economics University of Kiel Olshausenstr. 40 D-24098 Kiel (Germany) Tel: +49-431-880 4445 Fax: +49-431-880 1397 ahenningsen at agric-econ.uni-kiel.de http://www.uni-kiel.de/agrarpol/ahenningsen/ _______________________________________________ R-packages mailing list R-packages at stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-...

...ette_systemfit.pdf). Jeff D. Hamann Arne Henningsen -- Jeff D. Hamann Forest Informatics, Inc. PO Box 1421 Corvallis, Oregon 97339-1421 phone 541-754-1428 jeff.hamann at forestinformatics.com www.forestinformatics.com and Arne Henningsen Department of Agricultural Economics University of Kiel Olshausenstr. 40 D-24098 Kiel (Germany) Tel: +49-431-880 4445 Fax: +49-431-880 1397 ahenningsen at agric-econ.uni-kiel.de http://www.uni-kiel.de/agrarpol/ahenningsen/ _______________________________________________ R-packages mailing list R-packages at stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-...

...quot; profit function (see http://www.micEcon.org). All these packages are available for download from CRAN and from their websites (see above). Any comments and suggestions on these packages are welcome! Ott & Arne -- Arne Henningsen Department of Agricultural Economics University of Kiel Olshausenstr. 40 D-24098 Kiel (Germany) Tel: +49-431-880 4445 Fax: +49-431-880 1397 ahenningsen at agric-econ.uni-kiel.de http://www.uni-kiel.de/agrarpol/ahenningsen/ _______________________________________________ R-packages mailing list R-packages at r-project.org https://stat.ethz.ch/mailman/listinfo/r-pack...

Hi Folks, I am using Windows 2000 and was wondering what (Open Source) software R users use or might recommend for symbolic computations (aside from the ol' noggin, e.g., Maxima, Mathomatic) . Thanks, Hank Dr. Martin Henry H. Stevens, Assistant Professor 338 Pearson Hall Botany Department Miami University Oxford, OH 45056 Office: (513) 529-4206 Lab: (513) 529-4262 FAX: (513) 529-4243

Hi there fellow R users, Has anyone got an R example of applying an Ideal demand system, possibly using the library systemfit?? Thanks Wayne Dr Wayne R. Jones Senior Statistician / Research Analyst KSS Limited St James's Buildings 79 Oxford Street Manchester M1 6SS Tel: +44(0)161 609 4084 Mob: +44(0)7810 523 713 KSS Ltd Seventh Floor St James's Buildings 79 Oxford Street

-----Ursprüngliche Nachricht----- Von: Wildi Marc, wia Gesendet: Mittwoch, 18. August 2004 10:11 An: r-help@lists.R-project.org Betreff: Hi Does anybody know from an R-package devoted to sample selection problems (Heckman's lambda, Lewbel, ...)? Thanks and best regards Marc Wildi [[alternative HTML version deleted]]

...age that is appropriate to include the Heckmann function and whose maintainer is willing to do that, too? (Of course, I will write the .Rd file and, if the maintainer wants, I will maintain this function.) Thanks, Arne -- Arne Henningsen Department of Agricultural Economics University of Kiel Olshausenstr. 40 D-24098 Kiel (Germany) Tel: +49-431-880 4445 Fax: +49-431-880 1397 ahenningsen at agric-econ.uni-kiel.de http://www.uni-kiel.de/agrarpol/ahenningsen/

...ts in all possible cases. So please check these functions (results, code) and send me bug reports or patches. You are also invited to provide further functions, e.g. tools for other functional forms. Best regards, Arne -- Arne Henningsen Department of Agricultural Economics University of Kiel Olshausenstr. 40 D-24098 Kiel (Germany) Tel: +49-431-880 4445 Fax: +49-431-880 1397 ahenningsen at agric-econ.uni-kiel.de http://www.uni-kiel.de/agrarpol/ahenningsen/ _______________________________________________ R-packages mailing list R-packages at stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-...