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st: Scatterplot: Weighted markers change size


From   "Friedrich Huebler" <[email protected]>
To   [email protected]
Subject   st: Scatterplot: Weighted markers change size
Date   Tue, 29 Jul 2008 19:36:40 -0400

-scatter- supports weights. When a scatterplot is drawn, all weighted
markers have a distinct size. This size changes when the data are
divided into two or more groups and then drawn as overlaid
scatterplots. I am looking for a way to retain the size of the
original markers. The problem is best understood with an example.

clear all
input x y weight group
1 1 1 1
2 1 10 1
1 2 100 2
2 2 1000 2
end
scatter y x [w=weight], name(A)
twoway (scatter y x if group==1 [w=weight]) ///
(scatter y x if group==2 [w=weight]), name(B)

Compare graphs A and B. In graph A all four markers have a different
size. In graph B there are two pairs of markers with the same size. I
would like to have the same marker sizes in graph B as in graph A
while keeping the colors that identify the two different groups. How
can I do this?

Thanks,

Friedrich
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