[R] Re-binning histogram data

Petr Pikal petr.pikal at precheza.cz
Thu Jun 8 11:56:23 CEST 2006


try truehist from MASS package and look for argument breaks or h.


On 8 Jun 2006 at 10:46, Justin Ashmall wrote:

Date sent:      	Thu, 8 Jun 2006 10:46:19 +0100 (BST)
From:           	Justin Ashmall <ja at space.mit.edu>
To:             	r-help at stat.math.ethz.ch
Subject:        	[R] Re-binning histogram data

> Hi,
> Short Version:
> Is there a function to re-bin a histogram to new, broader bins?
> Long version: I'm trying to create a histogram, however my input-data
> is itself in the form of a fine-grained histogram, i.e. numbers of
> counts in regular one-second bins. I want to produce a histogram of,
> say, 10-minute bins (though possibly irregular bins also).
> I suppose I could re-create a data set as expected by the hist()
> function (i.e. if time t=3600 has 6 counts, add six entries of 3600 to
> a list) however this seems neither elegant nor efficient (though I'd
> be pleased to be mistaken!). I could then re-create a histogram as
> normal.
> I guessing there's a better solution however! Apologies if this is a
> basic question - I'm rather new to R and trying to get up to speed.
> Regards,
> Justin
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Petr Pikal
petr.pikal at precheza.cz

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