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Re: AW: st: AW: Reshaping a Dataset


From   drreg@earthlink.net
To   statalist@hsphsun2.harvard.edu
Subject   Re: AW: st: AW: Reshaping a Dataset
Date   Fri, 23 Jul 2010 10:55:08 -0400 (EDT)

This is a dataset that I received in Excel from an engineer in another section of our office. The data are airborne concentrations measured at several sites over several dates. The data set covers the period 2005 - 2009. There are over 500 lines of data, and the thought of having to rearrange these manually is, well, very unpleasant.

reg


-----Original Message-----
>From: Martin Weiss <martin.weiss1@gmx.de>
>Sent: Jul 23, 2010 10:32 AM
>To: statalist@hsphsun2.harvard.edu
>Subject: AW: st: AW: Reshaping a Dataset
>
>
><> 
>
>
>Begs the question: How come the data are organized in this fashion? I would not know how to conduct an analysis given such a data structure. Maybe you can fill us in.
>
>
>
>HTH
>Martin
>
>
>-----Ursprüngliche Nachricht-----
>Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von drreg@earthlink.net
>Gesendet: Freitag, 23. Juli 2010 15:06
>An: statalist@hsphsun2.harvard.edu
>Betreff: Re: st: AW: Reshaping a Dataset
>
>Yes, that is correct.
>
>
>-----Original Message-----
>>From: Martin Weiss <martin.weiss1@gmx.de>
>>Sent: Jul 23, 2010 8:55 AM
>>To: statalist@hsphsun2.harvard.edu
>>Subject: st: AW: Reshaping a Dataset
>>
>>
>><> 
>>
>>The first table does not wrap well, so it is hard to tell what the -varname-s really are. It looks as if the columns contain both strings, to hold the site and county names, and numeric data, correct?
>>
>>
>>
>>HTH
>>Martin
>>
>>
>>-----Ursprüngliche Nachricht-----
>>Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von drreg@earthlink.net
>>Gesendet: Freitag, 23. Juli 2010 14:47
>>An: Statalist
>>Betreff: st: Reshaping a Dataset
>>
>>I've been working on this for a while now, but obviously I do not yet understand what -reshape- needs to do its work.
>>
>>Here is some data from the dataset:
>>
>>site	  Crouse   Garinger   Arrowood   County Line   Rockwell   Enochville   Monroe
>>county	  Lincoln  Burton     Burton     Burton        Chance     Chance       Union
>>date							
>>20050701	    0.082	           0.083                    0.08	
>>20050709            0.076      0.076	
>>20050720            0.084                               0.079			
>>20050721                       0.08        0.085			
>>20050722						0.078	
>>20050724						0.08	
>>20050725  0.101     0.081      0.095       0.078        0.087       0.079
>>
>>I want to reshape the dataset to look like:
>>
>>date      county     site           conc
>>20050701  Lincoln    Crouse           .
>>20050701  Burton     Garinger       0.082
>>20050701  Burton     Arrowood         .
>>20050701  Burton     County Line    0.083
>>20050701  Chance     Rockwell         .
>>20050701  Chance     Enochville      0.08
>>20050701  Union      Monroe           .
>>etc.  etc.
>>
>>Can anyone assist me with this? Thanks much.
>>
>>reg
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