>> i am running that looks like:
>>
>> foreach S in fa sp ts {
>> if [the macro S] ~="ts" {
>> -- extra commands --
>> }
>> }
>>
>> that is, i'm performing a set of commands once for the "fa"
>> string, once
>> for "sp", and once for "ts". my problem: i can't figure
>> out how to refer
>> to the macro `S' and have stata realize that i'm referring
>> to the macro
>> `S' and not a variable named S or "fa", etc...
>>
>> is there a way to write this so that i can test whether the
>> macro S is
>> equal to a given string fa, sp, or ts ?
>>
>foreach S in fa sp ts {
> if "`S'" ~= "ts" {
> -- extra commands --
> }
>}
>
>Also see [P] foreach; Stata Journal 2(2), 202-222 (2002)
>
>Nick
>[email protected]
I have a question related to the one answered above. In the following code, all works well up until line 8 (the poisson command), which returns
exposure(): pop25m: string variable not allowed
1 foreach ICD in i21 {
2 foreach age in 25 35 45 {
3 foreach sex in m f {
4 local deaths = "`ICD'_`age'`sex'"
5 local population = "pop`age'`sex'"
6 macro list
7 list year `ICD'_`age'`sex' pop`age'`sex' `deaths' `population'
8 poisson `deaths' year, exposure (`population')
9 }
10 }
11 }
In other words, it appears that the list command interprets the local macro `population' as a varname, but the exposure() part of the poisson command does not.
Any comments gratefully received.
with thanks,
James.
==========================================
James Harris
National Centre for Epidemiology and Population Health
The Australian National University
CANBERRA ACT 0200
Australia
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