Scott Merryman replied to Dev Vencappa
>
> > 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.
> Use -levels-
>
> something like this should work:
>
> levels isic, local(levels)
> foreach l of local levels {
> twoway (line relwage year, sort) if isic== `l'
> }
>
See this in context at
Is there a way to tell Stata to try all values of a
particular variable in a foreach statement without specifying them?
http://www.stata.com/support/faqs/data/foreach.html
Nick
[email protected]
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