Re: [zelig] Re : Re : sim() command error with MatchIt - Zelig

22 Jan 2012

Hi Francois,

It worked!
Thank you, thank you, thank you!
Kenji

On Sat, Jan 21, 2012 at 5:04 PM, Francois Maurice <
maurice.francois(a)ymail.com&gt; wrote:

...
   Hi Kenji,

 There is a problem with the followint option in MatchIt :

 discard = "hull.control"

 If you run MatchIt without this option, there is no more problem. Maybe
 it's a bug or maybe you have to specify something ! I don't know. I think
 that a developer can be more helpful.

 François Maurice, B. Sc., A. Stat.
  Candidat à la maîtrise
 Département de sociologie
  Université de Montréal
   *De :* Kenji Adachi &lt;kenji.adachi.2010(a)gmail.com&gt;
 *À :* Francois Maurice &lt;maurice.francois(a)ymail.com&gt;
 *Cc :* &quot;zelig(a)lists.gking.harvard.edu&quot; &lt;zelig(a)lists.gking.harvard.edu&gt;
 *Envoyé le :* Mercredi 18 Janvier 2012 10h11
 *Objet :* Re: Re : [zelig] sim() command error with MatchIt

  Hi Francois and all,

 Thanks for your prompt reply.
 I tried "hisp" instead of "hispan", then I got another error:
"Error in
 eval(expr, envir, enclos) : object 'hisp' not found."

 So, I think "hispan" should be okay because I copied everything from the
 manual.
 I still need your and other Zelig users' help.  Please help!

 Thanks.
 Kenji

 On Wed, Jan 18, 2012 at 8:39 AM, Francois Maurice <
 maurice.francois(a)ymail.com&gt; wrote:

  Hi,

 Look at the lalonde dataset. I think that a variable in the zelig()
 formula is not written correctly. If I remembered well "hispan" is written
 "hisp" in the dataset.

 À bientôt,

 François Maurice, B. Sc., A. Stat.
 Candidat à la maîtrise
 Département de sociologie
 Université de Montréal
   *De :* Kenji Adachi &lt;kenji.adachi.2010(a)gmail.com&gt;
 *À :* zelig(a)lists.gking.harvard.edu
 *Envoyé le :* Mercredi 18 Janvier 2012 1h20
 *Objet :* [zelig] sim() command error with MatchIt

 Dear all,

 I am interested in using MatchIt for my research. (I am relatively new to
 R, too.) To make myself familiar with the command, I've tried some samples
 provided in the manual.  I believe I followed the steps as explained, but I
 always get the same error message. What I did was as follows:

  library(MatchIt)
 data(lalonde)
 m.out <- matchit(treat ~ age + educ + black + hispan + nodegree + 
                     married + re74 + re75, method = "nearest", discard
                     = "hull.control", data = lalonde)

  library(Zelig) 
  z.out <- zelig(re78 ~ treat + age + educ +
black + hispan + nodegree + 
                   married + re74 + re75, data = match.data(m.out),
                   model = "ls")

  x.out <- setx(z.out, treat=0)
 x1.out <- setx(z.out, treat=1) 
  s.out <- sim(z.out, x = x.out, x1 = x1.out)

 Error in mvrnorm(num, mu = coef(object), Sigma = vcov(object)) :
 incompatible arguments

 I am using R version 2.14.1. I also updated Zelig and MatchIt for the
 latest version.
 I have completely no idea what I did wrong.  I would greatly appreciate it
 if you would tell me what to do.

 Best Regards,
 Kenji Adachi

 -
 --
 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
 https://lists.gking.harvard.edu/mailman/listinfo/zelig