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Re: st: legend of -graph pie-
Dear Vince and all.
I appreciate Stata Corp.'s prompt action, but I'm afraid the peculiar
behavior of -graph pie- still remains. It still includes unintended keys
in the legend. Of course I recognized that the latest executable and
ado-files (31 Oct 2003) are installed in my computer.
With the following commands, can anybody replicate this behavior?
. sysuse auto
. graph pie, over(rep78) by(foreign)
On Fri, 31 Oct 2003 10:37:16 -0600
email@example.com (Vince Wiggins, StataCorp) wrote:
> UENOHARA Hideaki <firstname.lastname@example.org> notes that -graph pie- includes a
> key in the legend for missing values when the -over()- and -by()- options are
> combined and the over group variable has missing values
> > After updating the executable and ado-files, I have found -graph
> > pie- behaves peculiarly with respect to the legend.
> > The problem is as follows:
> > . sysuse auto.dta
> > . graph pie, over(rep78) by(foreign)
> > produces a pie chart whose legend has an extra key which corresponds
> > to missing values. On the other hand
> > . graph pie, over(rep78)
> > does not.
> Friedrich Huebler <email@example.com> notes that this behavior extends to
> including keys for groups excluded with an -if- condition and also suggests
> that we can use -legend(order(...))- to exclude any keys we wish.
> This behavior is an unintended consequence of the fact that -by()- tries to be
> completely generic and have no knowledge of the -graph- subcommand being
> -by-ed, while at the same time allowing a common legend with a single set of
> keys to be produced. Suffice to say that we cannot get rid of those extra
> keys without making -by()- smarter about which graph subcommand is being run.
> That intelligence will be added in the next official update, either late this
> afternoon or Monday. Keys for unwanted missings and explicitly excluded
> groups will no longer haunt our legends.
> -- Vince
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