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Re: st: Collapsing data to daily data
From
Muyang Zhang <[email protected]>
To
[email protected]
Subject
Re: st: Collapsing data to daily data
Date
Mon, 28 Feb 2011 15:29:10 -0500
-collapse- has a -by()- option. In your case, you may use
-collapse varlist, by(date indiv)-
On Mon, Feb 28, 2011 at 3:21 PM, Brigham Whitman <[email protected]> wrote:
>
> Hello,
>
> I have time series data where there are multiple data points per
> individual per day (it is animal GPS movement data). I want to
> collapse these data to get one data point per individual per day.
> Using Stata's collapse command, I only see functions to collapse from
> daily data to weekly, monthly, annual, etc. data. Is there a way to
> collapse from multiple points per day to daily data? If anybody has
> done this before, I would appreciate some advice.
>
> Thank you,
>
> Brigham Whitman
> SUNY ESF
> Syracuse, NY
>
> *
> * 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/
--
Zhang Muyang
China Center for Economic Research
Peking University
Beijing, 100871
China.
*
* 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/