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...e, but now once more has this problem. Thanks. Charles /****************************************** ** Charles H. Franklin ** Professor, Political Science ** University of Wisconsin, Madison ** 1050 Bascom Mall ** Madison, WI 53706 ** 608-263-2022 Office ** 608-265-2663 Fax ** mailto:franklin at polisci.wisc.edu (best) ** mailto:chfrankl at facstaff.wisc.edu (alt) ** http://www.polisci.wisc.edu/~franklin ******************************************/

...l=4) }, ) ) What am I missing? Thanks! Charles /****************************************** ** Charles H. Franklin ** Professor, Political Science ** University of Wisconsin, Madison ** 1050 Bascom Mall ** Madison, WI 53706 ** 608-263-2022 Office ** 608-265-2663 Fax ** mailto:franklin at polisci.wisc.edu (best) ** mailto:chfrankl at facstaff.wisc.edu (alt) ** http://www.polisci.wisc.edu/~franklin ******************************************/

...when x and y are two by two but this won't generalize with larger matrices. Any ideas about whether this can be done with existing R functions in a general way short of writing my own function? Thanks Luke Luke Keele Department of Political Science Ohio State University keele.4@polisci.osu.edu [[alternative HTML version deleted]]

...trix of dummy variables? fm<-lm(y~f) where f is a factor takes care of this in the estimation. I'd like to save the result of expanding f into a matrix for later use. Thanks. Charles -- Charles H. Franklin Professor, Political Science University of Wisconsin, Madison franklin at polisci.wisc.edu chfrankl at wisc.edu 608-263-2022 (voice) 608-265-2663 (fax)

...-1), hessian = TRUE) mod.beta B. Dan Wood, Professor and University Faculty Fellow Texas A&M University Department of Political Science 4348 TAMU College Station, TX 77843-4348 Office: (979) 845-1610 Home: (979) 690-0390 Voice Mail: (979) 492-7599 FAX: (979) 847-8924 <http://www-polisci.tamu.edu/bdanwood <http://www-polisci.tamu.edu/bdanwood> > [[alternative HTML version deleted]]

...s. For example, age might have a positive effect on probability of selection, but then a negative effect on the outcome variable. i.e. Model<-selection(participation~age, frequency~age, ...) Documentation elsewhere describes one method for doing this in Stata based on Sigelman and Zeng: http://polisci.osu.edu/prl/Selection%20Models.pdf - see page 16. I'd like to replicate this in r, but wanted to check I'm not reinventing the wheel, before doing so. Any help is much appreciated. Best regards Mark [[alternative HTML version deleted]]

A newbie question: I'm trying to decide whether to run a maximum likelihood estimation in R or Stata and am wondering if the R mle routine is reasonably robust. I'm fairly certain that, with this data, in Stata I would get a lot of complaints about non-concave functions and unproductive steps attempted, but would eventually have a successful ML estimate. I believe that, with the

...act with Tomomi. At Kurt's suggestion, I have changed the maintainer to "ORPHANED." Best, Jeff Lewis -- Jeffrey B. Lewis, Associate Professor Department of Political Science University of California Los Angeles Los Angeles CA 90095 t: 310.206.5295 f: 310.825.0778 w: http://www.polisci.ucla.edu/faculty/lewis _______________________________________________ R-packages mailing list R-packages at r-project.org https://stat.ethz.ch/mailman/listinfo/r-packages

...act with Tomomi. At Kurt's suggestion, I have changed the maintainer to "ORPHANED." Best, Jeff Lewis -- Jeffrey B. Lewis, Associate Professor Department of Political Science University of California Los Angeles Los Angeles CA 90095 t: 310.206.5295 f: 310.825.0778 w: http://www.polisci.ucla.edu/faculty/lewis _______________________________________________ R-packages mailing list R-packages at r-project.org https://stat.ethz.ch/mailman/listinfo/r-packages

FYI ---------- Forwarded message ---------- From: Bear Braumoeller <braumoeller.1 at polisci.osu.edu> Date: 2009/8/4 Subject: Re: Package boolean on CRAN To: "cgb at datanalytics.com" <cgb at datanalytics.com> Cc: Ronggui Huang <ronggui.huang at gmail.com>, Ben Goodrich <goodrich at fas.harvard.edu> Gentlemen, Thanks for your enquiries. ?Boolean is under a...

...data with both categorial and numerical data, currently only the categorical number contains missing data, was wondering do I make a new dataframe containing only the categorical columns? How would you use Latent Class Model specifically poLCA to impute the missing data? http://www.sscnet.ucla.edu/polisci/faculty/lewis/pdf/poLCA-JSS-final.pdf The reason why I chose not to use Multiple Imputation(MI) is because according to [http://blogs.iq.harvard.edu/sss/archives/2008/09/a_handy_trick_f.shtml] "MI packages assume the Multivariate Normal Distribution which may not hold for certain types of ca...

...ument. Searches of "Sweave" and "comment" in the list and documentation didn't turn up anything about echoing comments in either R or Sweave. Thanks. Charles -- Charles H. Franklin Professor, Political Science University of Wisconsin, Madison 608-263-2022 franklin at polisci.wisc.edu chfrankl at wisc.edu

I am trying to use the optimizing function genoud() with the snow package on a couple of i686 machines running Redhat Linux WS4 . I don't know anything about PVM or MPI, so I just followed the directions in snow and rgenoud for the simplest method and started a socket cluster. My function fn for genoud involves updating an input file for a separate numerical model with the latest parameter

I would rather use cleveland dot plots than bar charts to display my study results. I have not been able to find (or figure out) an R package that is capable of producing the publication quality dot charts Im looking for. I have either not been able to get error bars (lattice), cannot order the data display properly (latticeExtra), or cannot make adjustments to axes. Does anyone have a quick