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help for ^xttrans2^
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Tabulate xt data
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        ^xttab^   varname [^if^ exp] [^,^ ^i(^varname^)^ ]

        ^xttrans2^ varname [^if^ exp] 
        [^,^ ^i(^varname^)^ ^t(^varname^)^ ^f^req ^prob^ tabulate_options ]


Description
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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 probabilit
> ies
(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
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^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 tra
> nsi-
    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
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        . ^iis id^
        . ^tis year^

        . ^xttab race^
        . ^xttab married^

        . ^xttrans2 married, matcell(T)^


Author
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         Nicholas J. Cox, University of Durham, U.K.
         n.j.cox@@durham.ac.uk


Also see
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 Manual:  ^[R] xttab^
On-line:  help for @xt@, @xtdes@, @xtsum@