R help - Nov 2015 - mlogit.optim start values problem

Hello All,

I received the following message and I think it is regarding start values or the
method.

semsem = mlogit.optim ( LL=LL*Prob[i,1] , start = c(1,1,1), method =
c("bfgs"), iterlim = 2000, tol = 1E-05, ftol = 1e-08, steptol = 1e-10,
print.level = 2)
+ 
+ }

Error in as.name(f[[2]]) : 
  'pairlist' object cannot be coerced to type ?symbol'

Do you have an idea how to fix this?

Thanks in advance

Hi Alaa,
>From the code you sent, I think that the error may be in one or more lines
preceding the call to mlogit.optim. The "+" prompt means that the R
interpreter thinks there is more to come, and when you added a right brace
("}"), it probably tried to interpret everything back to the last left
brace ("{"). Can you show us the preceding lines?

Jim


On Fri, Nov 13, 2015 at 8:06 AM, Alaa Sindi <alaasindi at gmail.com>
wrote:
> Hello All,
>
> I received the following message and I think it is regarding start values
> or the method.
>
> semsem = mlogit.optim ( LL=LL*Prob[i,1] , start = c(1,1,1), method >
c("bfgs"), iterlim = 2000, tol = 1E-05, ftol = 1e-08, steptol = 1e-10,
> print.level = 2)
> +
> + }
>
> Error in as.name(f[[2]]) :
>   'pairlist' object cannot be coerced to type ?symbol'
>
> Do you have an idea how to fix this?
>
> Thanks in advance
>
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