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Re: weighted Gaussian distribution mean [message #47518]

Tue, 14 February 2006 06:48

James Kuyper
Messages: 425
Registered: March 2000

Senior Member

maffie wrote:
> Hi all,
>
> I have really don`t succeed in doing the following:
>
> I have an 24x29 array, where fromm I would like to calculate a
> weighted, Gaussian distribution mean with the central point of this
> 24x29 array as the centre of the Gauss-distribution. Any help is
> welcome, because I can't see a solution....

cols = 24
rows = 29
x = replicate(1.0, cols)#indgen(rows)
y = indgen(cols)#replicate(1.0,rows)
weight = exp( -((x - 0.5*rows)^2 + (y - 0.5*cols)^2)/sigma^2 )
average = total(data*weight)/total(weight)

You have to provide "data", and you have to choose a value for sigma.

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