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st: problem adding textbox to graph with 2 y axes


From   Brian Wells Pence <bpence@email.unc.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: problem adding textbox to graph with 2 y axes
Date   Thu, 27 Oct 2005 09:09:55 -0400 (EDT)

I'm trying to add a text box to a graph that has 2 y axes with different scales. I can add the text to a single graph, and I can add the text to a graph with 2 y variables if they are on the same axis, but when I add a second y axis I get a mystifying error message. I've replicated the problem below using the auto.dta dataset; commands and log are below. Am I doing something wrong?

Thanks,
Brian

. sysuse auto, clear
(1978 Automobile Data)
.
. * Single scatterplot, text added
. twoway scatter mpg weight, text(41 2040 "VW Diesel", place(e))
.
. * Two scatter plots, single y axis, text added
. twoway scatter mpg weight, text(41 2040 "VW Diesel", place(e)) || ///

        scatter turn weight
.
. * Two scatter plots, two y axes with different scales, no text
. twoway scatter mpg weight ||    ///
        scatter turn weight, yaxis(2)
.
. * Two scatter plots, two y axes with different scales, attempt to add text
. twoway scatter mpg weight, text(41 2040 "VW Diesel", place(e)) || ///

        scatter turn weight, yaxis(2)
text() option invalid, specified axis pair (1 1) not in graph
invalid syntax
invalid syntax
invalid syntax
r(198);

end of do-file
r(198);

. * Two scatter plots, two y axes, a different attempt to add text
. twoway scatter mpg weight ||    ///
        scatter turn weight, yaxis(2)   ///
        , text(41 2040 "VW Diesel", place(e))
text() option invalid, specified axis pair (1 1) not in graph
invalid syntax
invalid syntax
invalid syntax
r(198);

end of do-file
r(198);
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