matrix_extraction.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}
{* 05apr2005}{...}
{cmd:help matrix extraction}
{hline}

{title:Title}

{pstd}
{hi:[P] matrix define} {hline 2} Submatrix extraction


{title:Syntax}

{p 8 14 2}{cmdab:mat:rix} {it:A} {cmd:=} {it:...} {it:B}{cmd:[}{it:r0}{cmd:..}{it:r1}{cmd:,}
				{it:c0}{cmd:..}{it:c1}{cmd:]} {it:...}

{pstd}
where {it:r0}, {it:r1}, {it:c0}, and {it:c1} are numeric or string scalar
expressions.


{title:Examples}

{phang}{cmd:. matrix A = B[2..4, 3..6]}{p_end}
{phang}{cmd:. matrix A = B[2..., 2...]}{p_end}
{phang}{cmd:. matrix A = B[1, "price".."mpg"]}{p_end}
{phang}{cmd:. matrix A = B["eq1:", "eq1:"]}


{title:Also see}

{psee}
Manual:  {bf:[U] 14 Matrix expressions},{break}
{bf:[P] matrix define}

{psee}
Online:  {helpb matrix};
{help matrix subscripting},
{help matrix substitution}
{p_end}