Evann, I'm glad you worked that out. And of course, now that correction is on the list should it come up for others. However, those are also data issues (missingness, factors) that we should try to catch with more proactive internal checking in Zelig and softer, more informative error messages. Thanks for pointing that out, James. -- James Honaker, Senior Research Scientist //// Institute for Quantitative Social Science, Harvard University -----Original message----- *From: *"Smith, Evann" &lt;egsmith(a)fas.harvard.edu&gt;* To: *&quot;zelig(a)lists.gking.harvard.edu&quot; &lt;zelig(a)lists.gking.harvard.edu&gt;* Sent: *Fri, Mar 29, 2013 23:57:39 GMT+00:00* Subject: *Re: [zelig] sim() problems with ordered logit: incorrect dimensions In case anyone is wondering, I figured out my problems. 1) I needed to set my dependent variable as a factor outside the zelig call. 2) It didn't like that I had missing data (which produced NAs in the setx values). Listwise deletion prior to running the model solved that problem. Cheers, Evann On Mar 29, 2013, at 6:25 PM, wrote: Hi, When running an ordered logit, I get the following error: d1t.x <- setx(d1t) d1t.s <- sim(d1t, x=d1t.x) Error in as.matrix(x)[, -1] : incorrect number of dimensions As best I can discern, this is because the coef(d1t) command pulls the coefficients from the model, but not the values of the intercepts. While vcov(d1t) includes the intercepts. Is there a fix or workaround for this? Or am I doing something else wrong? Cheers, Evann ==================================== Evann Smith Ph.D. Candidate Department of Government Harvard University egsmith(a)fas.harvard.edu ==================================== ==================================== Evann Smith Ph.D. Candidate Department of Government Harvard University egsmith(a)fas.harvard.edu ==================================== - -- Zelig Mailing List, served by HUIT Send messages: zelig(a)lists.gking.harvard.edu [un]subscribe Options: http://lists.gking.harvard.edu/mailman/listinfo/zelig Zelig program information: http://gking.harvard.edu/zelig/ Zelig mailing list Zelig(a)lists.gking.harvard.edu To unsubscribe from this list or get other information: https://lists.gking.harvard.edu/mailman/listinfo/zelig