forvalues x=3111/3909{
twoway (line relwage year, sort) if isic==`x'
}
I have a panel data set with coded industries, the first and last codes being 3111 and 3909 respectively. In actual fact, there are only about 80 industries in total rather than 799 (3909 minus 3111). Is there a way I can ask Stata to avoid the remaining 719 industries when looping the command over each industry, as non-existing industries would produce a blank graph and would make the looping time-consuming. I know that one option would be to define a local of the 80 industries, but I am sure there is another more straightforward way which I am not aware of.
Please help
Many thanks
Dev
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