Maximum Likelihood Estimation of
Stochastic Frontier Production and Cost Functions.
Two specifications are available:
the error components specification with time-varying efficiencies
(Battese and Coelli, 1992, <doi:10.1007/BF00158774>)
and a model specification in which the firm effects are directly
influenced by a number of variables (Battese and Coelli, 1995,
<doi:10.1007/BF01205442>).

R (>= 2.8.1), classInt, colorspace, methods, rgl, sp
It calculates the alpha-quantile and order-m efficiency
score in multi-dimension and computes several summaries and
representation of the associated frontiers in 2d and 3d.

It calculates the alpha-quantile and order-m efficiency score in multi-dimension and computes several summaries and representation of the associated frontiers in 2d and 3d.
alphafrontier.2d.r alphafrontier.3d.r alphascore.r
ordermscore.r ordermscore.boot.r ordermfrontier.2d.r ROCscore.r

Prediction of Minimum Temperature for Frost Forecasting in
Agriculture
c(person(given = "Ana Laura",
family = "Diedrichs",
role = c("cre", "aut"),
comment = c(ORCID = "0000-0001-9973-4554"),
email = "ana.diedrichs@frm.utn.edu.ar" ),
person(given = "Facundo",
family = "Bromberg",
role = c("ths") ),
person(given = "Diego",
family = "Dujovne",
role = c("ths"),
comment = c(ORCID = "0000-0003-4207-633X") ))
A compilation of empirical methods used by farmers and agronomic engineers to predict the minimum temperature to detect a frost night. These functions use variables such as environmental temperature, relative humidity, and dew point. See <http://sedici.unlp.edu.ar/handle/10915/72102> <http://www.fao.org/docrep/008/y7223e/y7223e0b.htm#bm11.8> for details.
Ana Laura Diedrichs [cre, aut]
(<https://orcid.org/0000-0001-9973-4554>),
Facundo Bromberg [ths],
Diego Dujovne [ths] (<https://orcid.org/0000-0003-4207-633X>)

An unofficial R client to MET Norway's
'Frost' API <https://frost.met.no/index2.html> to retrieve data as data
frames. The 'Frost' API, and the underlying data, is made available by the
Norwegian Meteorological Institute (MET Norway). The data and products are
distributed under the Norwegian License for Open Data 2.0 (NLOD) <https://data.norge.no/nlod/en/2.0>
and Creative Commons 4.0 <https://creativecommons.org/licenses/by/4.0/>.