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Re: (a-b, b-c, c-d, d-e,...) [message #56039 is a reply to message #56038]

Fri, 28 September 2007 22:06

jschwab@gmail.com
Messages: 30
Registered: December 2006

Member

On Sep 28, 10:48 am, Jimoid <jimmy.cul...@gmail.com> wrote:
> I have used IDL to analyse data in my MSc project. I am writing up my
> dissertation now and want to know if there is a specific term for one
> of the processes I have used.
>
> The data are in several vectors of the form (a, b, c, d,...). I have
> found the change in value from one point to the next and then analysed
> those, i.e. the data is in the format (a-b, b-c, c-d, d-e,...). Can
> someone tell me what the name for this process is (if there is one,
> and I'm sure there is).
>
> Many thanks

I have always heard such values referred to as "first differences".

Cheers,
Josiah

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		Re: (a-b, b-c, c-d, d-e,...) By: George N. White III on Sat, 29 September 2007 06:28
		Re: (a-b, b-c, c-d, d-e,...) By: jschwab@gmail.com on Fri, 28 September 2007 22:06

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