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{* 2 Feb 2001}{...}
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help for {hi:ds2}{right:(STB-60: dm78.1)}
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{title:Describe variables in memory}

{p 8 16}{cmd:ds2} [{it:varlist}] 
[{cmd:,} {c -(} {cmdab:n:umeric} {cmdab:s:tring} {c |} 
{cmdab:t:ype(}{it:vartype}{cmd:)} {c )-}
{c -(} {cmdab:h:asval(}{c -(}{cmd:a}{c |}{cmd:y}{c |}{cmd:u}{c |}{cmd:n}{c )-}{cmd:)}
{c |} {cmdab:w:ithval(}{it:value_label_name}{cmd:)} {c )-} 
  {cmdab:d:etail} ]

{title:Description} 

{p}{cmd:ds2} lists variable names in a compact format (or optionally, in the
same format as {cmd:describe}). It is a variant on {cmd:ds}.

{title:Options} 

{p 0 4}{cmd:numeric} specifies that only numeric variables should be listed.

{p 0 4}{cmd:string} specifies that only string variables should be listed.

{p 0 4}
{cmd:type(}{it:vartype}{cmd:)} specifies that only variables of type {it:vartype} should
    be listed. {cmd:type( )} may be abbreviated down to as few as one
    character for {cmd:b}yte, {cmd:i}nt, {cmd:l}ong, {cmd:f}loat and 
    {cmd:d}ouble. {cmd:string} 
    or any abbreviation of it means string variables of any length, so
    that {cmd:type(str)} is equivalent to {cmd:string}. {cmd:type( )}
    may not be  combined with {cmd:numeric} or {cmd:string}.

{p 0 4} 
{cmd:hasval(}{c -(}{cmd:a}{c |}{cmd:y}{c |}{cmd:u}{c |}{cmd:n}{c )-}{cmd:)} specifies that variables with or without
    value labels attached should be listed. {cmd:hasval(a)} or {cmd:hasval(y)}
    means attached and {cmd:hasval(u)} or {cmd:hasval(n)} means unattached. The
    variables listed will be a subset of those otherwise specified.
    {cmd:t(int) h(a)} means {cmd:int} variables with value labels attached.

{p 0 4} 
{cmd:withval(}{it:value_label_name}{cmd:)} specifies that variables with value label
    {it:value_label_name} attached should be listed. The variables listed
    will be a subset of those otherwise specified.

{p 0 4} 
{cmd:hasval( )} and {cmd:withval( )} may not be combined.     

{p 0 4} 
{cmd:detail} specifies that a more detailed listing should be given.
    {cmd:ds2, s d} is equivalent to {cmd:describe} with all the string
    variables.
    {cmd:ds2, n d} is equivalent to {cmd:describe} with all the numeric
    variables.

{title:Saved results}

{cmd:ds2} saves in {cmd:r(varlist)} the names of the variables listed.

{title:Examples}

{p 4 8}{inp:. ds2, s}

{p 4 8}{inp:. ds2, s d}

{p 4 8}{inp:. ds2, n}

{p 4 8}{inp:. order `r(varlist)'}

{p 4 8}{inp:. ds2, n}

{p 4 8}{inp:. su `r(varlist)'}

{p 4 8}{inp:. ds2, s}

{p 4 8}{inp:. edit `r(varlist)'}

{p 4 8}{inp:. ds2, t(float)}

{p 4 8}{inp:. ds2, t(str16)}

{p 4 8}{inp:. ds2, w(origin)}

{title:Author} 

         Nicholas J. Cox, University of Durham, U.K.
         n.j.cox@durham.ac.uk

{title:Acknowledgement}

    Jay Kaufman's suggestions led to {cmd:type()} and {cmd:withval()} options.

{title:Also see}

On-line: help for {help describe}
 Manual: {hi:[R] describe}, {hi:[R] saved results}