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...c(foo[1])) [1] FALSE Warning message: NAs introduced by coercion This works, but I always get the spurious warning messages. Do you know a better way or a way to suppress these warning messages? Thanks, Arne -- Arne Henningsen Department of Agricultural Economics Christian-Albrechts-University Kiel 24098 Kiel, Germany Tel: +49-431-880-4445 Fax: +49-431-880-1397 ahenningsen at email.uni-kiel.de http://www.uni-kiel.de/agrarpol/ahenningsen.html

...$"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/

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

Hello world, I am actually transferring a course in data management for students in biology, geography and agriculture from statistica to R - it works surprisingly well. If anyone is interested in my scratch/notepad (in German language), please see www.hydrology.uni-kiel.de/~schorsch/statistik/statistik_datenauswertung.pdf (pages 40-52) The dataset is: www.hydrology.uni-kiel.de/~schorsch/statistik/erle_stat.csv It contains a 10 year dataset. So far for introduction, now comes the problem: we often need cumulative *annual* sums (sunshine, precipitation), i.e....

...ve days 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 Si...

Dr. Michael Breuer 22.04.05 ?kologiezentrum der Universit?t Kiel Olshausenstra?e 75 24118 Kiel Dear Ladies and Sirs, After updating the R-Windows-program (binary) by the latest version (2010), the R-Scripts that I want to execute are not shown in the File-Window anymore. In the former version it worked correct. However, if I call a script by command line, i...

...isk below Kaplan-Meier curves like in http://bloodjournal.hematologylibrary.org/content/vol116/issue19/images/large/zh89991058760001.jpeg any hint (or negative answer) is much appreciated. Thanks Thorsten -- Thorsten Raff 2nd Medical Department, University Hospital Schleswig-Holstein, Campus Kiel Chemnitzstra?e 33 24116 Kiel GERMANY phone: +49 431 1697-5234 fax: +49 431 1697-1264 email: t.raff<at>med2.uni-kiel.de web: www.uk-sh.de

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:

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]]

...? Do 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/

...Whom 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/

...function (sum of squared residuals): nlmodel<-nls(y~a*x^b,data=d,start=list(a=1,b=0.1),trace=T) Many thanks!!! Christiana -- Christiana Anagnostou ***************************************** Department of Evolutionary Ecology and Genetics Zoological Institute Christian-Albrechts-University of Kiel Am Botanischen Garten 9 24118 Kiel Germany Tel: +49-431-8804145 (work) Tel: +49-431-5709649 (home) Fax: +49-431-8802403 Email: canagnostou@zoologie.uni-kiel.de Web: www.uni-kiel.de/zoologie/evoecogen/ [[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/

...the list. Thorsten P.S: I have already sent this message to the mailing list, howver I got a bounce-message back, so hopefully this is no duplicate entry. Sorry for any inconvenience that this may confer. -- Thorsten Raff 2nd Medical Department, University Hospital Schleswig-Holstein, Campus Kiel Chemnitzstra?e 33 24116 Kiel GERMANY phone: +49 431 1697-5234 fax: +49 431 1697-1264 email: t.raff<at>med2.uni-kiel.de web: www.uk-s-h.de -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 197 bytes...

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

...ther. Since it took me quite some time to figure that out, I thought that I let you know. In my case it helped to install an older version of XML but your mileage of course may vary. Best regards Thorsten -- Thorsten Raff 2nd Medical Department, University Hospital Schleswig-Holstein, Campus Kiel Chemnitzstra?e 33 24116 Kiel GERMANY phone: +49 431 1697-5234 fax: +49 431 1697-1264 email: t.raff<at>med2.uni-kiel.de web: www.uk-sh.de

...Rename the function? (any suggestions?) 3) Change something that avoids this problem without renaming the functions? I would prefer the third point, but I don't know how. Thank you for your answers, Arne -- Arne Henningsen Department of Agricultural Economics Christian-Albrechts-University Kiel 24098 Kiel, Germany Tel: +49-431-880-4445 Fax: +49-431-880-1397 ahenningsen at email.uni-kiel.de http://www.uni-kiel.de/agrarpol/ahenningsen.html

...plotting function used on a survfit object. I apologize in advance for having missed any obvious informational sources but I really didn't find anything in the documentation. Best regards Thorsten Raff -- Thorsten Raff 2nd Medical Department, University Hospital Schleswig-Holstein, Campus Kiel Chemnitzstra?e 33 24116 Kiel GERMANY phone: +49 431 1697-5234 fax: +49 431 1697-1264 email: t.raff<at>med2.uni-kiel.de web: www.uk-sh.de

...99202 > pchisq(0.00 , 1, ncp=0, lower.tail = F, log.p = FALSE) [1] 0 ## Should be 1.0 The error occurred with R version 2.4.0 (windows) and version 2.3.1 (linux). Best regards, Michael Nothnagel --- Dr. Michael Nothnagel Institute of Medical Informatics and Statistics, University of Kiel http://capella.uni-kiel.de/ ---

...ging 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/