GLCURVE5: Stata module to derive generalised Lorenz curve ordinates with unit record data (Stata 5 or 6)
Philippe Van Kerm
Stephen P. Jenkins
Given a variable varname, call it x with c.d.f. F(x), glcurve7 draws its Generalised Lorenz curve and/or generates two new variables containing the Generalised Lorenz ordinates for x, i.e. GL(p) at each p = F(x). For a population ordered in ascending order of x, a graph of GL(p) against p plots the cumulative total of x divided by population size, against cumulative population share. GL(1) = mean(x). glcurve7 can also be used to derive many other related concepts such as Lorenz curves, concentration curves and 'Three Is of Poverty' (TIP) curves, with appropriate definition of varname, order of cumulation (set with the sortvar option), and normalisation (e.g. by the mean of varname). Alternatively glcurve7 with the lorenz, atip or rtip option can be used directly to draw the related Lorenz, concentration and TIP curves. glcurve7 is an update of glcurve that appeared in the STB as sg107 (STB-49 and STB-48).
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