y_creating.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}
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{help contents:Top}
> {help y_dm:Data management}
{bind:> {bf:Creating and changing variables}}
{p_end}
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{title:Help and category listings}

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{bf:{help generate:Create or change contents of variable}}{break}
    the {cmd:generate} and {cmd:replace} commands that use standard
    algebraic syntax

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{bf:{help egen:Extensions to generate}}{break}
    create "across-observation" variables such as variables containing
    means within group, ...

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{bf:{help y_coccov:Other variable creation and changing commands}}{break}
    recoding, imputing, smoothing, creating variables containing statistics,
    generating data with a particular mean and correlation, ...

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{bf:{help y_storage:Storage types and formats}}{break}
    store data as {cmd:float}s, {cmd:double}s, {cmd:str}{it:#}, ...;
    set display formats; value labels

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{bf:{help y_crutil:Variable utilities}}{break}
    creating indicator (dummy) variables; renaming and dropping variables

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