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2016 Mar 30
2
Compute the Gini coefficient
...1,2,3,4,5,6,7,8,9,10) Number of hosts associated with each number of parasites given above: hosts = c(18,20,28,19,16,10,3,1,0,0,0) To represent the Lorenz curve: I manually calculated the cumulative percentage of parasites and hosts: cumul_parasites <- cumsum(parasites)/max(cumsum(parasites)) cumul_hosts <- cumsum(hosts)/max(cumsum(hosts)) plot(cumul_hosts, cumul_parasites, type= "l") >From this Lorenz curve, how can I calculate the Gini coefficient with the function "gini" in R (package reldist) given that the vector "hosts" is not a vector of weights ? Thank...
2016 Apr 01
0
Compute the Gini coefficient
...umber of parasites given above: >> hosts = c(18,20,28,19,16,10,3,1,0,0,0) >> >> To represent the Lorenz curve: >> I manually calculated the cumulative percentage of parasites and hosts: >> >> cumul_parasites <- cumsum(parasites)/max(cumsum(parasites)) >> cumul_hosts <- cumsum(hosts)/max(cumsum(hosts)) >> plot(cumul_hosts, cumul_parasites, type= "l?) > > > Your values in hosts are frequencies. So you need to calculate > > cumul_hosts = cumsum(hosts)/sum(hosts) > cumul_parasites = cumsum(hosts*parasites)/sum(parasites) That'...