[R] Re-binning histogram data

Justin Ashmall ja at space.mit.edu
Thu Jun 8 12:35:46 CEST 2006


Thanks for the reply Petr,

It looks to me that truehist() needs a vector of data just like hist()? 
Whereas I have histogram-style input data? Am I missing something?

Cheers,

Justin



On Thu, 8 Jun 2006, Petr Pikal wrote:

> Hi
>
> try truehist from MASS package and look for argument breaks or h.
>
> HTH
> Petr
>
>
>
>
> 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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