varstable.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 varstable}{right:dialog:  {bf:{dialog varstable}}}
{hline}

{title:Title}

{p2colset 5 23 25 2}{...}
{p2col:{hi:[TS] varstable} {hline 2}}Check the stability condition of VAR
or SVAR estimates{p_end}
{p2colreset}{...}


{title:Syntax}

{p 8 16 2}
{cmd:varstable}
[{cmd:,} {it:options}]

{synoptset 25 tabbed}{...}
{synopthdr}
{synoptline}
{syntab:Main}
{synopt:{opt est:imates(estname)}}use previously saved results {it:estname};
default is to use active results{p_end}
{synopt:{opt a:mat(matrix_name)}}save the companion matrix as {it:matrix_name}{p_end}
{synopt:{opt gra:ph}}graph eigenvalues of the companion matrix{p_end}
{synopt:{opt d:label}}label eigenvalues with the distance from the unit circle{p_end}
{synopt:{opt mod:label}}label eigenvalues with the modulus{p_end}
{synopt:{opth rlop:ts(cline_options)}}affect rendition of reference unit circle{p_end}
{synopt:{opt nogri:d}}suppress polar grid circles{p_end}
{synopt:{opt pgrid}{cmd:(}[...]{cmd:)} [...]}specify radii and appearance of polar grid circles; see {help varstable##pgrid():Options} for details{p_end}

{syntab:Add plots}
{synopt:{opth "addplot(addplot_option:plot)"}}add other plots to the generated graph{p_end}

{syntab:Y-Axis, X-Axis, Title, Caption, Legend, Overall}
{synopt:{it:{help twoway_options}}}any options other than {opt by()} documented in {bind:{bf:[G]} {it:twoway_options}}{p_end}
{synoptline}
{p 4 6 2}
{opt varstable} can be used only after {helpb var} or {helpb svar}.
{p_end}


{title:Description}

{pstd}
{opt varstable} checks the eigenvalue stability condition after estimating
the parameters of a vector autoregression using {helpb var} or {helpb svar}.


{title:Options}

{dlgtab:main}

{phang}
{opt estimates(estname)} requests that {opt varstable} use the
   previously obtained set of {helpb var} estimates saved as {it:estname}.  By
   default, {opt varstable} uses the active estimation results.
   See {helpb estimates} for information on saving and restoring estimation
   results.

{phang}
{opt amat(matrix_name)} specifies a valid Stata matrix name by which
   the companion matrix {bf:A} can be saved (see Methods and Formulas in
   {bf:[TS] varstable} for a definition of the matrix {bf:A}).  The default is
   not to save the {bf:A} matrix.

{phang}
{opt graph} causes {opt varstable} to draw a graph of the eigenvalues of the
   companion matrix.

{phang}
{opt dlabel} labels each eigenvalue with its distance from the unit
   circle.  {opt dlabel} can only be specified with {opt graph} and cannot be
   specified with {opt modlabel}.

{phang}
{opt modlabel} labels the eigenvalues with their moduli.  {opt modlabel}
   can only be specified with {opt graph} and cannot be specified with 
   {opt dlabel}.

{phang}
{opth rlopts(cline_options)} affect the rendition of the reference
   unit circle; see {it:{help cline_options}}.  {opt rlopts()} can only be
   specified with {opt graph}.

{phang}
{opt nogrid} suppresses the polar grid circles.  {opt nogrid} can only be
   specified with {opt graph}.

{phang}
{marker pgrid()}{...}
{cmd:pgrid(}[{it:{help numlist}}][{cmd:,} {it:{help line_options}}]{cmd:)}
   determines the radii and appearance of the polar grid circles.  By default,
   the graph includes nine polar grid circles with radii .1, .2, ..., .9 that
   have the {opt grid} linestyle.  The {it:numlist} specifies the radii for
   the polar grid circles.  The {it:line_options} determine the
   appearance of the polar grid circles; see {it:{help line_options}}.  Since
   the {opt pgrid()} option can be repeated, circles with different radii can
   have distinct appearances.  {opt pgrid()} can only be specified with
   {opt graph}.

{dlgtab:Add plots}

{phang}
{opt addplot(plot)} adds specified plots to the generated graph.  See
{it:{help addplot_option}}.  {opt addplot()} can only be specified with
{opt graph}.

{dlgtab:Y-Axis, X-Axis, Title, Caption, Legend, Overall}

{phang}
{it:twoway_options} are any of the options documented in
   {it:{help twoway_options}}, except {cmd:by()}.  These include options for
   titling the graph (see {it:{help title_options}}) and options for saving
   the graph to disk (see {it:{help saving_option}}).  {it:twoway_options} can
   only be specified with {opt graph}.


{title:Examples}

{phang}{cmd:. varstable}{p_end}

{phang}{cmd:. varstable, amat(A)}{p_end}


{title:Also see}

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

{psee}
Online:  
{helpb svar},
{helpb var},
{helpb varbasic}
{p_end}