[R] Aggegate minutes data to hourly data

[Shouro Dasgupta]

http://stats.stackexchange.com/questions/7268/how-to-aggregate-by-minute-data-for-a-week-into-hourly-means

On Wed, Mar 11, 2015 at 12:19 PM, Kuma Raj <pollaroid at gmail.com> wrote:

> I have a measurement that was taken in 15 minutes or more and want to
> aggregate it by hour. How could I do that?
>
> Sample data is found below
> date_time concentration
> 26/11/2013 15:46 529.25
> 26/11/2013 16:03 1596
> 26/11/2013 16:23 1027.111
> 26/11/2013 16:39 1001.9
> 26/11/2013 16:54 -80.25
> 26/11/2013 17:12 1064.125
> 26/11/2013 11:14 7969.7
> 26/11/2013 11:32 522
> 26/11/2013 11:58 845.111
> 26/11/2013 12:12 1166.875
> 26/11/2013 12:30 473.375
> 26/11/2013 12:42 466.2
> 26/11/2013 07:47 4358.833
> 26/11/2013 08:05 1257.545
> 26/11/2013 08:24 828.6
> 26/11/2013 08:45 942
> 26/11/2013 08:58 758.111
> 26/11/2013 09:13 832.333
> 26/11/2013 15:45 1876.909
> 26/11/2013 16:07 574.25
> 26/11/2013 16:27 1736.846
> 26/11/2013 16:43 1024.857
> 26/11/2013 16:59 858.538
> 26/11/2013 17:15 912.455
> 26/11/2013 11:18 2086.143
> 26/11/2013 11:39 2078.667
> 26/11/2013 12:03 1619.072
> 26/11/2013 12:16 1197.583
> 26/11/2013 12:35 619.308
> 26/11/2013 12:51 1222.571
> 26/11/2013 07:49 1357.929
> 26/11/2013 08:08 1120
> 26/11/2013 08:29 1381.6
> 26/11/2013 08:48 1493.429
> 26/11/2013 09:03 1113.786
> 26/11/2013 09:18 1217.143
>
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