Re: st: RE: xline macro or scalars

[Buzz Burhans <wsb2@cornell.edu>]

Thanks Nick,

You correctly interpreted my attempted task, and I will tuck your solution 
away for another similar situation.  I have a couple of questions about 
your solution.  What I needed was a way to mark (by an xline) the 
occurrence of, variably, one, two, or three events on the x axis of an 
xtline graph.  It looks like the line I reproduce below would give me only 
a single xline per xtline graph, is that correct? And would you then 
continue the three options as overlayed graphs to create a singel graph 
with the three possible lines?

the line that looks like it grabs a single event to me is:


>                 if r(max) < . local events "`events'`r(max)' "

Second question, not at all a priority.  Is there a way to use mkmat to 
accomplish this? That was where I was headng when I realized I could use 
recast(rcap) to create capped lines at each event occurrence and mark them 
that way.

Thanks for the demonstration, as always, it is informative.

Buzz





> Buzz later found another solution;
> nevertheless, a direct solution may be of interest.
>
> As I understand it, Buzz has something like this
>
> id
> time
> event1
> event2
> event3
>
> and for each panel -event1-, -event2-,
> -event3- contain the times of events 1 to 3
> if and only if those events occur
>
> and (presumably) there is at least one
> other response variable.
>
> I'd try something like this:
>
> levels id, local(levels)
> foreach l of local levels {
>         // next line clears macro
>         local events
>         forval i = 1/3 {
>                 su event`i' if id == `l', meanonly
>                 if r(max) < . local events "`events'`r(max)' "
>         }
>         if "`events'" != "" {
>                 xtline response if id == `l', ///
>                 subtitle(panel `l') xline(`events')
>         }
>         else xtline response if id == `l', subtitle(panel `l')
>         more
> }
>
> Nick
> n.j.cox@durham.ac.uk
>
> *
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Buzz Burhans
wsb2@cornell.edu


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