diagnostic_plots.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}
{* 29mar2005}{...}
{cmd:help diagnostic plots} {...}
{right:dialogs:  {bf:{dialog symplot}}  {bf:{dialog quantile}}  {bf:{dialog qqplot}}}
{right:{bf:{dialog qnorm}}  {bf:{dialog pnorm}}  {bf:{dialog qchi}}  {bf:{dialog pchi}} }
{hline}

{title:Title}

{p2colset 5 29 31 2}{...}
{p2col :{hi:[R] diagnostic plots} {hline 2}}Distributional diagnostic plots{p_end}
{p2colreset}{...}


{title:Syntax}

{phang}Symmetry plot

{phang2}
{cmd:symplot}
{varname} 
{ifin}
[{cmd:,} {it:{help diagnostic_plots##options1:options1}}]

{phang}Ordered values of varname against quantiles of uniform distribution

{phang2}
{cmd:quantile} 
{varname} 
{ifin}
[{cmd:,} {it:{help diagnostic_plots##options1:options1}}]

{phang}Quantiles of varname1 against quantiles of varname2

{phang2}{cmd:qqplot}
{it:{help varname:varname1}}
{it:{help varname:varname2}}
{ifin}
[{cmd:,} {it:{help diagnostic_plots##options1:options1}}]

{phang}Quantiles of varname against quantiles of normal distribution

{phang2}{cmd:qnorm}
{varname}
{ifin}
[{cmd:,} {it:{help diagnostic_plots##options2:options2}}]

{phang}Standardized normal probability plot

{phang2}{cmd:pnorm}
{varname}
{ifin}
[{cmd:,} {it:{help diagnostic_plots##options2:options2}}]

{phang}Quantiles of varname against quantiles of chi-squared distribution

{phang2}{cmd:qchi}
{varname}
{ifin}
[{cmd:,} {it:{help diagnostic_plots##options3:options3}}]

{phang}Chi-squared probability plot

{phang2}{cmd:pchi}
{varname}
{ifin}
[{cmd:,} {it:{help diagnostic_plots##options3:options3}}]

{synoptset 25 tabbed}{...}
{marker options1}{...}
{synopthdr :options1}
{synoptline}
{syntab :Plot}
INCLUDE help gr_markopt2

{syntab:Reference line}
{synopt :{opth rlop:ts(cline_options)}}affect rendition of the reference line{p_end}

{syntab:Add plot}
{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 {cmd:by()} documented in
{bind:{bf:[G]} {it:twoway_options}}{p_end}
{synoptline}
{p2colreset}{...}

{synoptset 25 tabbed}{...}
{marker options2}{...}
{synopthdr :options2}
{synoptline}
{syntab :Main}
{synopt :{opt g:rid}}add grid lines{p_end}

{syntab:Plot}
INCLUDE help gr_markopt2

{syntab:Reference line}
{synopt :{opth rlop:ts(cline_options)}}affect rendition of the reference line{p_end}

{syntab:Add plot}
{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 {cmd:by()} documented in
{bind:{bf:[G]} {it:twoway_options}}{p_end}
{synoptline}


{synoptset 25 tabbed}{...}
{marker options3}{...}
{synopthdr :options3}
{synoptline}
{syntab:Main}
{synopt :{opt g:rid}}add grid lines{p_end}
{synopt :{opt df(#)}}degrees of freedom of chi-squared distribution; default is {cmd:df(1)}{p_end}

{syntab:Plot}
INCLUDE help gr_markopt2

{syntab:Reference line}
{synopt :{opth rlop:ts(cline_options)}}affect rendition of the reference line{p_end}

{syntab:Add plot}
{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 {cmd:by()} documented in
{bind:{bf:[G]} {it:twoway_options}}{p_end}
{synoptline}
{p2colreset}{...}


{title:Description}

{pstd}
{cmd:symplot} graphs a symmetry plot of {varname}.

{pstd}
{cmd:quantile} plots the ordered values of {it:varname} against the
quantiles of a uniform distribution.

{pstd}
{cmd:qqplot} plots the quantiles of {it:varname1} against the quantiles of
{it:varname2} (Q-Q plot).

{pstd}
{cmd:qnorm} plots the quantiles of {it:varname} against the quantiles of
the normal distribution (Q-Q plot).

{pstd}
{cmd:pnorm} graphs a standardized normal probability (P-P plot).

{pstd}
{cmd:qchi} plots the quantiles of {it:varname} against the quantiles of a
chi-squared distribution (Q-Q plot).

{pstd}
{cmd:pchi} graphs a chi-squared probability (P-P plot).

{pstd}
See {help regress postestimation} for regression diagnostic plots and 
{help logistic postestimation} for logistic regression diagnostic plots.


{title:Options for symplot, quantile, and qqplot}

{dlgtab:Plot}

INCLUDE help gr_markoptf

{dlgtab:Reference line}

{phang}
{opt rlopts(cline_options)} affect the rendition of the reference line;
see {it:{help cline_options}}.

{dlgtab:Add plot}

{phang}
{opt addplot(plot)} provides a way to add other plots to the
generated graph; see {it:{help addplot_option}}.

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

{phang} {it:twoway_options} are any of the options documented in
{it:{help twoway_options}}, excluding {opt 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}}).


{title:Options for qnorm and pnorm}

{dlgtab:Main}

{phang}
{opt grid} adds grid lines at the .05, .10, .25, .50, .75, .90, and .95
quantiles when specified with {cmd:qnorm}.  With {cmd:pnorm},
{opt grid} is equivalent to {cmd:yline(.25, .5, .75)} 
{cmd:xline(.25, .5, .75)}. 

{dlgtab:Plot}

INCLUDE help gr_markoptf

{dlgtab:Reference line}

{phang}
{opt rlopts(cline_options)} affect the rendition of the reference line;
see {it:{help cline_options}}.

{dlgtab:Add plot}

{phang}
{opt addplot(plot)} provides a way to add other plots to the
generated graph; see {it:{help addplot_option}}.

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

{phang}
{it:twoway_options} are any of the options documented in
{it:{help twoway_options}}, excluding {opt 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}}).


{title:Options for qchi and pchi}

{dlgtab:Main}

{phang}
{opt grid} adds grid lines at the .05, .10, .25, .50, .75, .90, and .95
quantiles when specified with {cmd:qnorm}.  With {cmd:pnorm},
{opt grid} is equivalent to {cmd:yline(.25, .5, .75)} 
{cmd:xline(.25, .5, .75)}.

{phang}
{opt df(#)} specifies the degrees of freedom of chi-squared distribution.  The
default is 1.

{dlgtab:Plot}

INCLUDE help gr_markoptf

{dlgtab:Reference line}

{phang}
{opt rlopts(cline_options)} affect the rendition of the reference line;
see {it:{help cline_options}}.

{dlgtab:Add plot}

{phang}
{opt addplot(plot)} provides a way to add other plots to the
generated graph; see {it:{help addplot_option}}.

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

{phang}
{it:twoway_options} are any of the options documented in 
{it:{help twoway_options}}, excluding {opt 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}}).


{title:Examples}

{phang}{cmd:. symplot price}

{phang}{cmd:. quantile price}

{phang}{cmd:. qnorm price, grid}

{phang}{cmd:. pnorm price, grid}

{phang}{cmd:. generate weightd=weight if !foreign}{p_end}
{phang}{cmd:. generate weightf=weight if foreign}{p_end}
{phang}{cmd:. qqplot weightd weightf}


{title:Also see}

{psee}
Manual:  {bf:[R] diagnostic plots}

{psee}
Online:  {helpb cumul}, {helpb logistic},
{helpb lv}, {help regress postestimation}
{p_end}