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News for Package 'censReg'
Changes in censReg version 0.5-38 (2024-04-20)
removed a test tht gve slightly different results on "M1mac" (no user-visible changes)
Changes in censReg version 0.5-36 (2022-08-03)
a few minor internal improvements (no user-visible changes)
Changes in censReg version 0.5-34 (2022-02-27)
the
margEff()
method for objects of classcensReg
now has an additional argumentvcovLogSigma
, which defaults toTRUE
; this change makes themargEff()
method consistent with thecoef()
andvcov()
methods but it changes the default way of calculating marginal effects compared to the previous version
Changes in censReg version 0.5-32 (2020-08-04)
added argument
subset
to functioncensReg()
added argument
vcov
to themargeff()
method for objects of classcensReg
.made the tests of this package compatible with version 1.4-0 of the
maxLik
package
Changes in censReg version 0.5-30 (2019-12-12)
-
censReg()
can now estimate models that only have an intercept and no (other) explanatory variables made the output of the test scripts much more robust to differences in numerical inaccuracies
Changes in censReg version 0.5-26 (2017-03-21)
some minor internal improvements and modifications, e.g. to make the 'censReg' package compatible with future versions of the 'plm' package
Changes in censReg version 0.5-22 (2016-08-19)
added argument 'xValues' to the
margEff()
method so that the user can specify the values of the explanatory variables, at wich the marginal effects are calculated-
censReg()
now stops with an error message if there are no uncensored observations or there are no censored observations
Changes in censReg version 0.5-20 (2013-08-20)
fixed an internal problem so that this package can be used with R version 3.1
fixed a few minor internal problems that were indicated by "R CMD check" with R version 3.1
Changes in censReg version 0.5-16 (2012-10-12)
corrected bug in the calculation of the covariance matrix of the marginal effects: hence, all statistical tests for the marginal effects were wrong in previous versions of the censReg package
added
print()
method for objects that are returned by themargEff()
method
Changes in censReg version 0.5-14 (2012-06-28)
the calculation of the gradients of the log-likelihood function for cross-sectional data is numerically more stable
Changes in censReg version 0.5-12 (2012-06-01)
added
nobs()
method that returns the (total) number of observations
Changes in censReg version 0.5-10 (2012-04-12)
added
margEff()
method that computes the marginal effects of the explanatory variables on the expected value of the dependent variable evaluated at the mean values of the explanatory variables. This functionality is currently not available for panel data models.
Changes in censReg version 0.5-8 (2012-03-04)
-
censReg()
has an argument"logLikOnly"
now: if this argument is set to TRUE, the model is not estimated but the log-likelihood contributions of all observations/individuals and the corresponding gradients calculated at the parameters specified by argument"start"
are returned made the calculation of the log-likelihood value of random effects panel data models with censored dependent variables and the calculation of the corresponsing gradient(s) numerically more robust and stable by calculating and storing the *logarithms* rather than the actual numbers
Changes in censReg version 0.5-6 (2011-09-06)
fixed bug that made it impossible to specify starting values for the estimation of censored random-effects panel data models (many thanks to Igors Lahanciks for reporting this bug!)
Changes in censReg version 0.5-4 (2011-05-17)
fixed bug that occured when a factor had
"empty"
levels (many thanks to Ulrich Morawetz for reporting this bug!)-
censReg()
now additionally returns the model terms and the degrees of freedom of the residuals added a
model.frame()
method for objects of class"censReg"
added a
formula()
method for objects of class"censReg"
added
extractAIC()
method for objects of class"censReg"
added
estfun()
method for objects of class"censReg"
that has an argument"includeSigma"
(defaults to TRUE), which determines whether the derivative with respect to the logarithm of the variance parameter should be included
Changes in censReg version 0.5-2 (2010-08-25)
initial public release of the censReg package