Description Usage Format References Examples
Burposte data
1 |
A data frame with 9521 observations on the following 3 variables.
ident
a numeric vector
xinput
a numeric vector
yprod
a numeric vector
Cazals C., Florens J.-P., Simar L. (2002), Nonparametric frontier estimation: a robust approach, Journal of Econometrics 106, 1-25.
1 |
Loading required package: classInt
Loading required package: colorspace
Loading required package: rgl
Loading required package: sp
Warning messages:
1: In rgl.init(initValue, onlyNULL) : RGL: unable to open X11 display
2: 'rgl_init' failed, running with rgl.useNULL = TRUE
3: .onUnload failed in unloadNamespace() for 'rgl', details:
call: fun(...)
error: object 'rgl_quit' not found
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