mf_uniqrows.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}
{* 16sep2004}{...}
{cmd:help mata uniqrows()}
{hline}
{* index uniqrows()}{...}

{title:Title}

{p 4 8 2}
{bf:[M-5] uniqrows() -- Obtain sorted, unique values}


{title:Syntax}

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{it:transmorphic matrix}
{cmd:uniqrows(}{it:transmorphic matrix P}{cmd:)}


{title:Description}

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{cmd:uniqrows(}{it:P}{cmd:)} 
returns a sorted matrix containing the unique rows of {it:P}.


{title:Remarks}

	: {cmd:x}
	{res}       {txt}1   2   3
	    {c TLC}{hline 13}{c TRC}
	  1 {c |}  {res}4   5   7{txt}  {c |}
	  2 {c |}  {res}4   5   6{txt}  {c |}
	  3 {c |}  {res}1   2   3{txt}  {c |}
	  4 {c |}  {res}4   5   6{txt}  {c |}
	    {c BLC}{hline 13}{c BRC}

	: {cmd:uniqrows(x)}
	{res}       {txt}1   2   3
	    {c TLC}{hline 13}{c TRC}
	  1 {c |}  {res}1   2   3{txt}  {c |}
	  2 {c |}  {res}4   5   6{txt}  {c |}
	  3 {c |}  {res}4   5   7{txt}  {c |}
	    {c BLC}{hline 13}{c BRC}


{title:Conformability}

    {cmd:uniqrows(}{it:P}{it:)}
		{it:P}:  {it:r1 x c1}
	   {it:result}:  {it:r2 x c1}, {it:r2} <= {it:r1}


{title:Diagnostics}

{p 4 4 2}
In {cmd:uniqrows(}{it:P}{it:)}, 
if {cmd:rows(}{it:P}{cmd:)}==0, 
{cmd:J(0, cols(}{it:P}{cmd:), missingof(}{it:P}{cmd:))} is returned.

{p 4 4 2}
If {cmd:rows(}{it:P}{cmd:)}>0 and {cmd:cols(}{it:P}{cmd:)}==0, 
{cmd:J(1, 0, missingof(}{it:P}{cmd:))} is returned.


{title:Source code}

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{view uniqrows.mata, adopath asis:uniqrows.mata}


{title:Also see}

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Manual:  {hi:[M-5] uniqrows()}

{p 4 13 2}
Online:  help for 
{bf:{help mf_sort:[M-5] sort()}};
{bf:{help m4_manipulation:[M-4] manipulation}}
{p_end}