On Sat, 10 Feb 2007, Javier García wrote:
 I´ve a dubt. When I choose in Gretl: Model->Time series-> 
 Autoregressive estimation, if I try estimating the model without 
 constant, Gretl tells me "Error in data", but if I include the 
 constant it makes the estimation correctly, why does it occurs? 
 is it a bug, isn't it? 
Sorry, you'll have to be more specific in giving an example where 
this doesn't work.  I just tried estimating a model using 
"Autoregressive estimation", with lags 1 and 4, with no constant 
included, and got estimates OK.
 On the other hand, if I select copy output, the estimated 
 coefficients don´t be pasted while the rest of output is pasted 
 (for example in word), 
You're right, I hadn't noticed that: the AR coefficients are 
omitted from the RTF (Word) output.  They're included in the plain 
text and LaTeX output.  I'll see about getting them included in 
the RTF.
Allin Cottrell