On 8 September 2011 09:56, Igors <igors.lahanc...@gmail.com> wrote:
> Does censReg expect from panel data to be balanced?
No. censReg() can estimate models with unbalanced panel data. The
estimation in the code that you sent me indeed does not work but if I
remove the user-specified starting values (argument "start"), it works
fine.
R> summary(UpC)
Call:
censReg(formula = Power ~ Windspeed, left = -Inf, right = 2000,
data = PData_In, nGHQ = 4, method = "BHHH", iterlim = 200)
Observations:
Total Left-censored Uncensored Right-censored
874 0 847 27
Coefficients:
Estimate Std. error t value Pr(> t)
(Intercept) -462.26676 19.89517 -23.23 <2e-16 ***
Windspeed 188.38796 1.72492 109.22 <2e-16 ***
logSigmaMu 4.54053 0.03352 135.45 <2e-16 ***
logSigmaNu 5.08733 0.02706 188.00 <2e-16 ***
---
Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
BHHH maximisation, 131 iterations
Return code 2: successive function values within tolerance limit
Log-likelihood: -5538.124 on 4 Df
/Arne
--
Arne Henningsen
http://www.arne-henningsen.name
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