{smcl}
{* 16nov2006}{...}
{cmd:help openall}
{hline}

{title:Title}

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{bf:openall -- Open many data sets by appending them}


{title:Syntax}

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{cmdab:openall} [files], [{cmd:directory}({it:string})] [{cmd:storefilename}({it:string})] [{cmd:insheet}]


{title:Description}

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{cmdab:openall} clears the currently active dataset, then appends together all the files specified.  


{title:Options}

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{cmd:files} specifies the files to append together.  The extension (e.g. ".dta") should not be specified.  Wildcards (e.g. *) are acceptable.  If not present, defaults to all Stata data files (.dta) in the current directory, or all .csv files if insheet is specified.

{cmd:directory} specifies the directory the files are located in.  If not present, defaults to the current directory (see {help pwd}).

{cmd:storefilename} specifies a variable to hold the filename from whence each observation came.

{cmd:insheet} specifies that the files to be read in are in CSV format.

{title:Examples}

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openall pop_US* pop_CA*, directory(c:/data/) storefilename(file)

openall sheet*, directory(c:/data/) insheet