[R] output error in MatchIt

Marwan Khawaja marwan.khawaja at gmail.com
Tue Feb 25 17:10:38 CET 2014

Yes!!..many thanks for your help - seems the problem is still pending!
Here it is,
"Average Treatment Effect" quantities of interest are not being included in
  zelig models temporarily. Simulation of these qi's will return pending a
  minor update to the 'setx' function.

regards Marwan

On 2/25/14, Ista Zahn <istazahn at gmail.com> wrote:
> It appears that average treatment effects are not calculated in the
> version of Zelig currently on CRAN. Note that this is a Zelig issue,
> not a MatchIt issue. See the "missing features" section of
> http://cran.r-project.org/web/packages/Zelig/NEWS.
> Best,
> Ista
> On Mon, Feb 24, 2014 at 9:09 AM, Marwan Khawaja
> <marwan.khawaja at gmail.com> wrote:
>> Hello,
>> I am trying to estimate average treatment effect in the MatchIt package
>> (current R version on Windows), and ran the model exactly as in the
>> documentation page 13, and got the following error massage,
>> ate.all<-c(s.out61$qi$att.ev, -s.out62$qi$att.ev)Error in
>> -s.out62$qi$att.ev : invalid argument to unary operator
>> (s.out62 is similar to s.out2 in the example0
>> Appreciate your help. Kindly respond to my private email - am not a
>> subscriber to R help list at the moment.
>> Thanks Marwan Khawaja
>>         [[alternative HTML version deleted]]
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