.-
help for ^xttrans2^
.-
Tabulate xt data
----------------
^xttab^ varname [^if^ exp] [^,^ ^i(^varname^)^ ]
^xttrans2^ varname [^if^ exp]
[^,^ ^i(^varname^)^ ^t(^varname^)^ ^f^req ^prob^ tabulate_options ]
Description
-----------
If you have not read help for @xt@, please do so now.
^xttab^, a generalization of @tabulate@, performs one-way tabulations and decom-
poses counts into between and within components in cross-sectional time-series
(xt) data. ^xttab^ is part of official Stata and untouched by the author.
^xttrans2^, another generalization of @tabulate@, reports transition probabilities
(the change in a single categorical variable over time). It differs from
official Stata's ^xttrans^ only in detail: (a) options of ^tabulate^ other
than ^row^ and ^freq^ also may be specified; (b) a matrix of probabilities may
be saved; (c) it may not be called ^by^ varlist.
Options
-------
^i(^varname^)^ specifies the variable name corresponding to i; see help @xt@.
^t(^varname^)^ specifies the variable name corresponding to t; see help @xt@.
^freq^, allowed with ^xttrans2^ only, specifies that frequencies as well as transi-
tion probabilities are to be displayed.
^prob^ specifies that the matrix produced contain probabilities rather than
frequencies.
tabulate_options are options of ^tabulate^ other than ^row^ and ^freq^. For
example, it may be useful to use ^matcell^ to save the frequencies to
a matrix.
Examples
--------
. ^iis id^
. ^tis year^
. ^xttab race^
. ^xttab married^
. ^xttrans2 married, matcell(T)^
Author
------
Nicholas J. Cox, University of Durham, U.K.
n.j.cox@@durham.ac.uk
Also see
--------
Manual: ^[R] xttab^
On-line: help for @xt@, @xtdes@, @xtsum@