Description Usage Arguments Details Author(s) References Examples
View source: R/ordermfrontier.2d.r
Representation of the m-order efficiency score (output, input or hyperbolic direction) for a set of reference points (xobs, yobs) in 2D (1 output and 1 input).
1 2 |
xobs |
a matrix of size n1 x 1, input of sample points |
yobs |
a matrix of size n1 x 1, output of sample points |
type |
a direction to choose among "output", "input" and "hyper" |
m |
an integer |
add |
a boolean with TRUE for keeping the active device |
confidence |
a boolean for representing a confidence interval |
shade |
a boolean for shading the confidence interval |
... |
usual options for ploting the frontier, lty, col, etc. |
Actually, there is no confidence interval when type="hyper". If type="input" and confidence=TRUE, the y-axis is permuted with the x-axis
Abdelaati Daouia and Thibault Laurent
Daouia, A. and L. Simar (2007), Nonparametric efficiency analysis: A multivariate conditional quantile approach, Journal of Econometrics 140, 375-400.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | # 1st example
data(spain)
plot(y~x2,data=spain)
ordermfrontier.2d(as.matrix(spain$x2),as.matrix(spain$y),type="output",m=30,
col='red',lty=2,add=TRUE)
ordermfrontier.2d(as.matrix(spain$x2),as.matrix(spain$y),type="input",m=30,
col='royalblue',lty=3,add=TRUE)
ordermfrontier.2d(as.matrix(spain$x2),as.matrix(spain$y),type="hyper",m=30,
col='green',lty=4,add=TRUE)
legend("topleft",
legend=c("output direction","input direction","hyper direction"),
lty=2:4,col=c("red","royalblue","green"))
# 2nd example
ordermfrontier.2d(as.matrix(spain$x2),as.matrix(spain$y),type="output",
confidence=TRUE,shade=TRUE,m=30)
|
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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