tssmooth_nl.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}
{* 07mar2005}{...}
{cmd:help tssmooth nl}{right:dialog:  {bf:{dialog tssmooth_nl:tssmooth nl}}}
{hline}

{title:Title}

{p2colset 5 25 27 2}{...}
{p2col :{hi:[TS] tssmooth nl} {hline 2}}Nonlinear filter{p_end}
{p2colreset}{...}


{title:Syntax}

{p 8 21 2}
{cmd:tssmooth} {cmd:nl} {dtype} {newvar} {cmd:=} {it:{help exp}} {ifin}{cmd:,} 
{opt sm:oother}{cmd:(}{it:smoother}[{cmd:,} {opt t:wice} ]{cmd:)}
[{cmd:replace}]

{pstd}
where {it:smoother} is specified as {it:Sm}[{it:Sm}[{it:...}]] and {it:Sm} is
one of{p_end}

	{c -(}{cmd:1}|{cmd:2}|{cmd:3}|{cmd:4}|{cmd:5}|{cmd:6}|{cmd:7}|{cmd:8}|{cmd:9}{c )-}[{cmd:R}]
	{cmd:3}[{cmd:R}]{cmd:S}[{cmd:S}|{cmd:R}][{cmd:S}|{cmd:R}]{it:...}
	{cmd:E}
	{cmd:H}

{pstd}
Letters may be specified in lowercase, if preferred.  Examples of
{it:smoother}[{cmd:, twice}] include

{p 8 8 2}{cmd:3RSSH} {space 2} {cmd:3RSSH,twice} {space 2} {cmd:4253H} {space 2} {cmd:4253H,twice} {space 2} {cmd:43RSR2H,twice}{p_end}
{p 8 8 2}{cmd:3rssh} {space 2} {cmd:3rssh,twice} {space 2} {cmd:4253h} {space 2} {cmd:4253h,twice} {space 2} {cmd:43rsr2h,twice}

{p 4 6 2}You must {helpb tsset} your data before using 
{cmd:tssmooth nl}.{p_end}
{p 4 6 2}{it:{help exp}} may contain time-series operators; see 
{help tsvarlist}.{p_end}


{title:Description}

{pstd}
{cmd:tssmooth nl} uses nonlinear smoothers to identify the underlying trend in
a series.


{title:Options}

{dlgtab:Main}

{phang}
{cmd:smooth(}{it:smoother}[{cmd:, twice}]{cmd:)} specifies the nonlinear
smoother to be used.

{phang}
{opt replace} replaces {newvar} if it already exists.


{title:Examples}

{psee}{cmd:. tssmooth nl nl1 = sales, smoother(3RSSH)}

{psee}{cmd:. tssmooth nl nl2 = sales, smoother(3RSSH, twice)}


{title:Also see}

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

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