expandcl.hlp

是一个经济学管理应用软件 很难找的 但是经济学学生又必须用到

{smcl}
{* 24nov2004}{...}
{cmd:help expandcl}{right:dialog:  {bf:{dialog expandcl}}}
{hline}

{title:Title}

{p2colset 5 21 23 2}{...}
{p2col :{hi:[D] expandcl} {hline 2}}Duplicate clustered observations{p_end}
{p2colreset}{...}


{title:Syntax}

{p 8 18 2}
{cmd:expandcl} [=]{it:{help exp}} {ifin} {cmd:,} {opth cl:uster(varlist)}
{opth gen:erate(newvar)}


{title:Description}

{pstd}
{cmd:expandcl} duplicates clusters of observations and generates a new
variable that identifies the clusters uniquely.

{pstd}
{cmd:expandcl} replaces each cluster in the current dataset with n
copies of the cluster, where n is equal to the integer part of the
required expression.  The expression is required to be constant within
cluster.  If the expression is less than 1 or equal to {it:missing}, it is
interpreted as if it were 1, and the cluster is retained but not duplicated.


{title:Options}

{phang}
{opth cluster(varlist)} is required and specifies the variables that identify
the clusters before expanding the data.

{phang}
{opth generate(newvar)} is required and stores unique identifiers for the
duplicated clusters in {it:newvar}.  {it:newvar} will identify the clusters
using consecutive integers starting from 1.


{title:Examples}

{phang}{cmd:. expandcl n, generate(newcl) cluster(cl)}

{phang}{cmd:. sort newcl cl x}

{phang}{cmd:. list, sep(0)}


{title:Also see}

{psee}
Manual:  {hi:[D] expandcl}

{psee}
Online:  {bf:{help bsample}}, {bf:{help expand}}
{p_end}