serrbar.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}
{* 16mar2005}{...}
{cmd:help serrbar} {right:dialog:  {bf:{dialog serrbar}}}
{hline}

{title:Title}

{p2colset 5 20 22 2}{...}
{p2col:{bf:[R] serrbar} {hline 2}}Graph standard error bar chart{p_end}
{p2colreset}{...}


{title:Syntax}

{p 8 16 2}
{cmd:serrbar}
{it:mvar}
{it:svar}
{it:xvar}
{ifin}
[{cmd:,} {it:options}]

{synoptset 27 tabbed}
{synopthdr}
{synoptline}
{syntab:Main}
{synopt:{opt sc:ale(#)}}scale length of graph bars; default is
{cmd:scale(1)}{p_end}

{syntab:Error bars}
{synopt:{it:{help twoway_rcap:rcap_options}}}affect rendition of capped spikes{p_end}

{syntab:Plotted points}
{synopt:{opth mvop:ts(scatter:scatter_options)}}affect rendition of plotted
points{p_end}

{syntab:Add plot}
{synopt:{opth "addplot(addplot_option:plot)"}}add other plots to 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}
{p2colreset}{...}


{title:Description}

{pstd}
{opt serrbar} graphs {it:mvar} +/- {opt scale()} * {it:svar} against
{it:xvar}.  Usually, but not necessarily, {it:mvar} and {it:svar} will contain
means and standard errors or standard deviations of some variable so that a
standard error bar chart is produced.


{title:Options}

{dlgtab:Main}

{phang}
{opt scale(#)} controls the length of the bars. The upper
and lower limits of the bars will be {it:mvar} + {opt scale()} * {it:svar} and
{it:mvar} - {opt scale()} * {it:svar}. The default is {cmd:scale(1)}.

{dlgtab:Error bars}

{phang}
{it:rcap_options} affect the rendition of the plotted error bars (the capped
spikes).  See {it:{help twoway_rcap}}.

{dlgtab:Plotted points}

{phang}
{opt mvopts(scatter_options)} affect the rendition of the plotted
points ({it:mvar} versus {it:xvar}).  See {helpb scatter}.

{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}

    {cmd:. list}

           date    mean    std
    1.        {res}8   192.4   3.94{txt}
    2.        {res}9   194.8   3.25{txt}
    <output omitted>

{phang}{cmd}. serrbar mean std date, scale(2) yline(195)

{phang}
. serrbar mean std date, scale(2) title("Observed Weight Variation")
    sub("San Francisco plant, 1/8 to 1/6") yline(195) yaxis(1 2)
    ylab(195, axis(2)) ytitle("", axis(2))


{title:Also see}

{psee}
Manual:  {bf:[R] serrbar}

{psee}
Online:  {help qc}
{p_end}