Hi gurus,
I have a big data frame df, with columns named as :
age, income, country
what I want to do is very simpe actually, do
fitFunc<-function(thisCountry){
subframe<-df[which(country==thisCountry),];
fit<-lm(income~0+age, data=subframe);
return(coef(fit));}
for each individual country. Then aggregate the result into a new data
frame looks like :
countryname, coeffname1 USA 1.22 GB
1.03 France 1.1
I tried to do :
do.call("rbind", lapply(countries, fitFunc))
but this only gives something like:
age
[1,] 2.540879
[2,] 2.428830
[3,] 2.369560
How should I proceed?
can anyone help?
--
*CHEN*, Cheng
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