st: Re: autogeneration of graphs

[Christopher F Baum <baum@bc.edu>]

--On Saturday, July 27, 2002 2:33 -0400 Scott wrote:

> First generate the mean number of claims:
> egen average_claim = mean(num_claims) by(census)
>
> Sort variables so they are in the correct census and month order:
> sort census month
>
> graph:
> by census: graph average_claim year, c(l)
This will certainly work, but will cause a number of graphs to just display 
on the screen. Perhaps adding   saving( ) would be useful. However that 
brings up a limitation of by (which is a wonderful feature, but sometimes 
does not do all that one needs...) It also does not allow labelling of the 
graphs. A modified
approach using Nick Cox' 'levels' (ssc desc levels):

use auto
g str1 mm = substr(make,1,1)    * equiv of census tract
levels mm,macname(cars)
foreach c of local cars {
  graph price mpg if mm=="`c'", saving(cars_`c',replace) ti("Cars of make 
`c'")
}

This will create files cars_A.gph, cars_B.gph, etc., with the graph titles 
containing information on the category being graphed.

In fact one can then do asomething like

graph using cars_A cars_B cars_C cars_D


Or use 'translate' to change all of the graphs into some other format (such 
as eps), etc.

Kit
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