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Last data update: 2014.03.03

R: Extended Gini Coefficient

calcSGini

R Documentation

Extended Gini Coefficient

Description

Computes the Extended Gini coefficient for a vector.

Usage

calcSGini(x, w = NULL, param = 2)

Arguments

`x`	Numeric vector with non-negative values.
`w`	Numeric vector of sampling weigths (optional).
`param`	Parameter specifying the extended Gini index (must be strictly positive).

Value

A list of class "ICI" with components:

`ineq`	a list with components `SGini` (value of inequality index) and `param` (value of parameter).
`nas`	a list with `NA` counts, including components `xNA`, `wNA` and `totalNA`.

References

Cowell F.A. (2000) Measurement of Inequality. In Atkinson A.B., Bourguignon F. (Eds.) Handbook of Income Distribution. Amsterdam, Elsevier, Vol. 1, pp. 87-166.

Schechtman E., Yitzhaki S. (2008) Calculating the Extended Gini Coefficient from Grouped Data: A Covariance Presentation. Bulletin of Statistics & Economics, 2(S08), pp. 64-69.

Examples

data(hhbudgets)

calcSGini(hhbudgets[,"ingreso"], param=0.5)
summary(hhbudgets[,"mantenimiento"])
calcSGini(hhbudgets[,"mantenimiento"], w=hhbudgets[,"factor"])

Results


R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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Type 'demo()' for some demos, 'help()' for on-line help, or
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Type 'q()' to quit R.

> library(IC2)
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/IC2/calcSGini.Rd_%03d_medium.png", width=480, height=480)
> ### Name: calcSGini
> ### Title: Extended Gini Coefficient
> ### Aliases: calcSGini
> 
> ### ** Examples
> 
> data(hhbudgets)
> 
> calcSGini(hhbudgets[,"ingreso"], param=0.5)
$ineq
$ineq$index
    SGini 
-2.039703 

$ineq$parameter
param 
  0.5 


$nas
$nas$xNA
[1] 0

$nas$wNA
NULL

$nas$totalNA
[1] 0


attr(,"class")
[1] "ICI"
> summary(hhbudgets[,"mantenimiento"])
   Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
      0       0       0    1374    2103   32990 
> calcSGini(hhbudgets[,"mantenimiento"], w=hhbudgets[,"factor"])
$ineq
$ineq$index
    SGini 
0.7640905 

$ineq$parameter
param 
    2 


$nas
$nas$xNA
[1] 0

$nas$wNA
[1] 0

$nas$totalNA
[1] 0


attr(,"class")
[1] "ICI"
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>