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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