[R] Array help

David Winsemius dwinsemius at comcast.net
Mon Nov 29 05:23:57 CET 2010

On Nov 28, 2010, at 10:56 PM, bfhancock wrote:

> Josh, the data set is called StatTemps and is in the PASWR package.   
> I want
> to make an array that involves only the 8 a.m. and a separate array  
> that
> involves only the 9 a.m. so i can get info on the temperatures in  
> those
> groups. So I still want it in the format of StatTemps but in two  
> arrays that
> are based on 8 a.m. or 9 a.m.    I have been messing with this for a  
> while.
> And no it's not homework, I am just trying to learn R so I am more  
> appealing
> out in the field eventually.  They book I am using is confusing!   
> Hopefully
> what I am trying to do isn't confusing.  I want to do an array that  
> holds
> the info from 1:6 & 12:22 for 8am and then 7:11 & 23:34 for 9am.  I  
> was able
> easily make two arrays based on sex by just putting in  
> StatTemps[1:11,,] &
> StatTemps[12:34,,] and assumed I could just go  
> StatTemps[1:6&12:22,,] and
> StatTemps[7:11&23:34,,] but that didn't work. Any ideas? Thanks so  
> much!

It may not be an array (since time values don't play very well with  
that data structure.)  If there is time as an index, it may be a more  
complex object such as a time-series or zoo. Check with str().

David Winsemius, MD
West Hartford, CT

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