tssmooth.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}
{* 14feb2005}{...}
{cmd:help tssmooth}
{hline}

{title:Title}

{p2colset 5 22 24 2}{...}
{p2col :{hi:[TS] tssmooth} {hline 2}}Smooth and forecast univariate 
   time-series data{p_end}
{p2colreset}{...}


{title:Syntax}

{p 8 18 2}
{cmd:tssmooth} {it:smoother} {dtype} {newvar} {cmd:=} {it:{help exp}}
   {ifin} [{cmd:,} {it:...}]

{synoptset 28 tabbed}{...}
{p2coldent :Smoother category}{it:smoother}{p_end}
{synoptline}
{syntab:Moving average}
{synopt :with uniform weights}{helpb tssmooth ma:ma}{p_end}
{synopt :with specified weights}{helpb tssmooth ma:ma}{p_end}

{syntab:Recursive}
{synopt :exponential}{helpb tssmooth exponential:exponential}{p_end}
{synopt :double exponential}{helpb tssmooth dexponential:dexponential}{p_end}
{synopt :nonseasonal Holt-Winters}{helpb tssmooth hwinters:hwinters}{p_end}
{synopt :seasonal Holt-Winters}{helpb tssmooth shwinters:shwinters}{p_end}

{p2coldent :Nonlinear filter}{helpb tssmooth nl:nl}{p_end}
{synoptline}
{p2colreset}{...}


{title:Description}

{pstd}
{cmd:tssmooth} creates new variable {newvar} and fills it in by passing the
specified expression (usually a variable name) through the requested smoother.


{title:Examples}

{psee}{cmd:. tssmooth ma ma1 = D.sales, window(2 1)}{p_end}
{psee}{cmd:. tssmooth ma ma1 = D.sales, weights(1 2 <3>)}{p_end}
{psee}{cmd:. tssmooth exponential exp1 = sales, parms(.3)}{p_end}
{psee}{cmd:. tssmooth dexponential dexp1 = sales, parms(.3)}{p_end}
{psee}{cmd:. tssmooth hwinters hw1 = sales, parms(.3 .2) forecast(6)}{p_end}
{psee}{cmd:. tssmooth shwinters hw1 = sales, parms(.3 .2 .1) forecast(6) period(12)}{p_end}
{psee}{cmd:. tssmooth nl nl1 = sales, smoother(3RSSH)}{p_end}


{title:Also see}

{psee}
Manual:  {bf:[TS] tssmooth}

{psee}
Online:  {helpb arima}, {helpb egen}, {helpb generate}, {helpb tsset}, 
{helpb tssmooth dexponential}, {helpb tssmooth exponential},
{helpb tssmooth hwinters}, {helpb tssmooth ma},
{helpb tssmooth nl}, {helpb tssmooth shwinters}{p_end}