Thanks to Kit Baum a new version of the -proprcspline- package is now available from SSC. -proprcspline- creates a stacked area plot showing
how the proportions of observations belonging to each category in an
categorical variable changes over a continuous variable, for example
this command can be (and has been) used to show how the proportion of
respondents who finished different school types changed over time.
A key characteristic of -proprcspline- is that the changes in
proportions over the continuous variable have been smoothed using a
restricted cubic spline. Examples of how the graph looks can be
seen at: http://www.maartenbuis.nl/software/proprcspline.html .
In the previous version the categories were labeled in a legend. In
the new version the default is to label the categories on the right
y-axis, though a legend is still available as an option. Moreover,
more control over how the graph looks is added through more options.
To install this package type in Stata -ssc install proprcspline-.
To update this package when a previous version was already installed
type -adoupdate, update- or -ssc install proprcspline, replace-.
-- Maarten
--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://www.maartenbuis.nl
--------------------------
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