It's a good question.
I guess:
-scatter- calls -graph- calls ... something that
clears your r-class results.
-graph- needs all sorts of little calculations to work
out what to show. It tends to do this on the fly, but
either way, you can lose your r-class results.
Whatever it is, it is quite deep down.
Nick
[email protected]
Alex Ogan
> Sorry if this is a silly question.
>
> I did the following sequence of commands. I closed the
> scatter as soon
> as it opened. No other commands.
>
> Why does r(mean) go away after you use it in the scatter with the
> formatting extended function?
>
> . sysuse auto, clear
> (1978 Automobile Data)
>
> . quietly summ length
>
> . di `r(mean)'
> 187.93243
>
> . di `: di %9.1f `r(mean)''
> 187.9
>
> . di `: di %9.1f `r(mean)''
> 187.9
>
> . twoway scatter length mpg, text(200 35 "The mean of length is:`: di
> %2.1f `r(mean)''")
>
> . di `: di %9.1f `r(mean)''
>
>
> . di `r(mean)'
>
>
> .
>
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