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From |
Richard Williams <richardwilliams.ndu@gmail.com> |

To |
statalist@hsphsun2.harvard.edu, statalist@hsphsun2.harvard.edu |

Subject |
Re: st: How many observations can Stata 11 handle? |

Date |
Wed, 15 Feb 2012 09:22:06 -0500 |

At 09:02 AM 2/15/2012, Maarten Buis wrote:

On Wed, Feb 15, 2012 at 2:42 PM, Tunga KantarcÄ± wrote: > Here is a short question. What is the maximum number of observations > that Stata 11 can handle? -help limits- > I have an administrative data set which > includes observations for about 3 million unique individuals, for 20 > variables. I very much doubt that the maximum number of observations is the problem here (unless you are using Small Stata, in which case you get what you pay for). Instead I suspect a problem with memory, specifically I suspect that one or more variables are stored as very long strings. The solution to that is to either not load that/those variable(s) by using -use varlist using filename- instead of -use filename-. You can spot the offending variables using -desc using filename-. Alternatively you can load only the offending variables, fix them and merge them with the rest of the variables. > I plan to draw a sample from the data set using SPSS and transfer the > data to Stata 11 with the Stat-transfer data conversion program. no need to use SPSS: to draw a 70% sample before opening the data you can type -use <filename> if runiform() < .7-

------------------------------------------- Richard Williams, Notre Dame Dept of Sociology OFFICE: (574)631-6668, (574)631-6463 HOME: (574)289-5227 EMAIL: Richard.A.Williams.5@ND.Edu WWW: http://www.nd.edu/~rwilliam * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: How many observations can Stata 11 handle?***From:*Tunga Kantarcı <tungakantarci@gmail.com>

**Re: st: How many observations can Stata 11 handle?***From:*Maarten Buis <maartenlbuis@gmail.com>

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