recast.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}
{* 24feb2005}{...}
{cmd:help recast}
{hline}

{title:Title}

{p2colset 5 19 21 2}{...}
{p2col :{hi:[D] recast} {hline 2}}Change storage type of variable{p_end}
{p2colreset}{...}


{title:Syntax}

{p 8 15 2}{cmd:recast} {it:{help data types:type}} {varlist}
           [{cmd:,} {opt force}]

{p 4 6 2}
where {it:type} is {cmd:byte}, {cmd:int}, {cmd:long}, {cmd:float},
{cmd:double}, or {cmd:str}{it:#}.


{title:Description}

{pstd}
{cmd:recast} changes the storage type of the variables identified in
{varlist} to {it:{help data types:type}}.


{title:Options}

{phang}
{cmd:force} makes {cmd:recast} unsafe by causing the variables
to be given the new storage type even if that will cause a loss of precision,
introduction of missing values, or, in the case of a string variables, the
truncation of strings.

{pmore}
{cmd:force} should be used with caution.  {cmd:force} is for those
instances where you have a variable saved as a {cmd:double} but would now be
satisfied to have the variable stored as a {cmd:float}, even though that would
lead to a slight rounding of its values.


{title:Examples}

{phang}{cmd:. recast int mpg}{p_end}

{phang}{cmd:. recast float mpg weight displ}


{title:Also see}

{psee}
Manual:  {bf:[D] recast}

{psee}
Online:  {helpb compress}, {help data types}, {helpb destring}
{p_end}