twoway_pccapsym.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}
{* 08apr2005}{...}
{cmd:help twoway pccapsym}{right:dialogs:  {dialog twoway_overlay:overlaid twoway}{space 0}}
	{right:{dialog twoway_simple:single twoway}{space 2}}
{hline}

{title:Title}

{p2colset 5 34 36 2}{...}
{p2col :{hi:[G] graph twoway pccapsym} {hline 2}}Paired-coordinate plot with
	spikes capped with marker symbols{p_end}
{p2colreset}{...}

{* index twoway pccapsym tt}{...}
{* index paired-coordinate plots, pccapsym}{...}
{* index headlabel tt}{...}

{title:Syntax}

{p 8 60 2}
{cmdab:tw:oway}
{cmd:pccapsym}
{it:y1var} {it:x1var} {it:y2var} {it:x2var}
{ifin}
[{cmd:,}
{it:options}]

{p2colset 9 39 41 2}{...}
{p2col:{it:options}}description{p_end}
{p2line}
INCLUDE help gr_blspike2
INCLUDE help gr_markopt
INCLUDE help gr_headlabopt

INCLUDE help gr_hvpcopt
INCLUDE help gr_axlnk

INCLUDE help gr_twopt
{p2line}
{pin}
All explicit options are {it:rightmost}, except {cmd:headlabel},
{cmd:vertical}, and {cmd:horizontal}, which are {it:unique}; see 
{help repeated options}.


{title:Description}

{pstd}
A paired-coordinate capped-symbol plot draws a spike (or line) for each
observation in the dataset and caps these spikes with a marker symbol at each
end.  The line starts at the coordinate ({it:y1var},{it:x1var}) and ends at
the coordinate ({it:y2var},{it:x2var}), and both coordinates are designated
with a marker.


{title:Options}

INCLUDE help gr_blspikef2

{phang}
{it:marker_options}
    specify how the markers look, including
    shape, size, color, and outline;
    see {it:{help marker_options}}.  The same marker is used on both ends of
    the spikes.

{phang}
{it:marker_label_options}
    specify if and how the markers are to be labeled; 
    see {it:{help marker_label_options}}.

INCLUDE help gr_headlaboptf

INCLUDE help gr_hvpcoptf

INCLUDE help gr_axlnkf

INCLUDE help gr_twoptf


{title:Remarks}

{pstd}
Remarks are presented under the headings

	{help twoway_pccapsym##basic_use:Basic use 1}
	{help twoway_pccapsym##basic_use2:Basic use 2}


{marker basic_use}{...}
{title:Basic use 1}

{pstd}
We have longitudinal data from 1968 and 1988 on the earnings and total
experience of US women by occupation.

	{cmd:. sysuse nlswide1, clear}

	{cmd:. list occ wage68 ttl_exp68 wage88 ttl_exp88}
{txt}
	     {c TLC}{hline 15}{c -}{hline 10}{c -}{hline 10}{c -}{hline 10}{c -}{hline 10}{c TRC}
	     {c |} {res}          occ     wage68   ttl_e~68     wage88   ttl_e~88 {txt}{c |}
	     {c LT}{hline 15}{c -}{hline 10}{c -}{hline 10}{c -}{hline 10}{c -}{hline 10}{c RT}
	  1. {c |} {res}Professionals   6.121874    .860618   10.94776   14.11177 {txt}{c |}
	  2. {c |} {res}     Managers   5.426208   1.354167   11.53928   13.88886 {txt}{c |}
	  3. {c |} {res}        Sales   4.836701   .9896552   7.290306   12.62823 {txt}{c |}
	  4. {c |} {res}     Clerical   4.088309    .640812   9.612672   11.08019 {txt}{c |}
	  5. {c |} {res}    Craftsmen   4.721373   1.091346   7.839769   12.64364 {txt}{c |}
	     {c LT}{hline 15}{c -}{hline 10}{c -}{hline 10}{c -}{hline 10}{c -}{hline 10}{c RT}
	  6. {c |} {res}   Operatives   4.364782   .7959284   5.893025   11.99362 {txt}{c |}
	  7. {c |} {res}    Transport   1.987857   .5247414   3.200494   8.710394 {txt}{c |}
	  8. {c |} {res}     Laborers   3.724821    .775966   5.264415   10.56182 {txt}{c |}
	  9. {c |} {res}        Other    5.58524   .8278245   8.628641   12.78389 {txt}{c |}
	     {c BLC}{hline 15}{c -}{hline 10}{c -}{hline 10}{c -}{hline 10}{c -}{hline 10}{c BRC}
{txt}

{pstd}
We graph a spike with symbols capping the end to show the movement from 1968
values to 1988 values for each observation (each occupation):

	{cmd:. twoway pccapsym wage68 ttl_exp68 wage88 ttl_exp88}
	  {it:({stata "gr_example nlswide1: twoway pccapsym wage68 ttl_exp68 wage88 ttl_exp88":click to run})}
{* graph gtpccapsym1}{...}

{pstd}
For a better presentation of this data, see 
{help twoway_pcspike##advanced_use:Advanced use} in {help twoway pcspike}, 
and note that the comments there about combining plots apply equally well to
{cmd:pccapsym} plots.


{marker basic_use2}{...}
{title:Basic use 2}

{pstd}
We can draw both the edges and nodes of network diagrams using
{cmd:twoway pccapsym}. 

	{cmd:. sysuse network1}

	{cmd:. twoway pccapsym y_c x_c y_l x_l}
	  {it:({stata "gr_example network1: twoway pccapsym y_c x_c y_l x_l":click to run})}
{* graph gtpccapsym2}{...}

{pstd}
Again a better presentation of this data can be found in {help twoway pcspike}
under {help twoway_pcspike##advanced_use2:Advanced use 2}.


{title:Also see}

{psee}
Manual:  {bf:[G] graph twoway pcspike}

{psee}
Online:  
{helpb twoway};
{helpb twoway line};
{helpb twoway rcapsym};
{helpb twoway pcspike},
{helpb twoway pcarrow},
{helpb twoway pcbarrow},
{helpb twoway pcscatter},
{helpb twoway pci}
{p_end}