I am using -forval- to run -inequal7- by date and export selected results. The problem is that I get the error message:
'0' invalid obs no
r(198);
I think the reason is that by dates are not 'consecutive' in that I have 19901, 19902, 19903, 19904, then 19911, 19912, etc. (As there are quarterly observations for each year 1990, 1991 etc). From various tests I have concluded that the error arises when the loop tries to run for a date when there are no observations (eg 19905).
My code is:
qui forval i 19901/20071 {
inequal7 income [fw=wei] if date==`i', returns
replace gini=r(gini) if date==`i'
}
I also tried using -foreach- but got the same error message:
qui foreach i = 19901/20071 {
inequal7 income [fw=wei] if date==`i', returns
replace gini=r(gini) if date==`i'
}
The only way that it works is if I specify each date individually, as in:
qui foreach i in 19901 19902 19903 **etc** {
inequal7 income [fw=wei] if date==`i', returns
replace gini=r(gini) if date==`i'
}
But this means typing each date individually.
I have run -forval- in this way for the same dataset, without problems, the problem seems to arise when combined with -inequal7-.
I would welcome any suggestions as to how to correct the problem (or even a smarter way of doing what I need!)
Thanks,
Lola
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