[R] r code for multilevel latent class analysis

[Jim Lemon]

Hi Cristina,
Try this:

names(mydata)

It may be NULL or "ppitrst" may be absent.

Jim


On Thu, Jul 7, 2016 at 8:26 PM, Cristina Cametti
<cristina.cametti at gmail.com> wrote:
> Dear all,
>
> I am not able to find a reliable r code to run a multilevel latent class model. Indeed, I have to analyze how social trust (three variables form the ESS survey) might vary between countries (21 countries in my database). I tried to use the poLCA package but I am not sure if my code is right. This is my code:
> lca <- cbind(ppltrst+1,pplfair+1,pplhlp+1)~cntry
> lc <- poLCA(lca,mydata)
>
> However, I get an error message:
> Error in `[.data.frame`(data, , match(colnames(y), colnames(data))[j]) :
> undefined columns selected
>
> How can I solve this? Is the code completely wrong or I missed some passages?
> Thank you very much for your help!
>
> Cristina
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>
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