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Conditional averaging [message #32725]

Wed, 06 November 2002 13:35

klassen
Messages: 1
Registered: November 2002

Junior Member

I have a set of arrays which I wish to average in a pixel-by-pixel fashion;
that is, I want to create an average array. The problem is that there are
points I wish to exclude from the averaging procedure (all of them have
been given a particular value, say, -100).

I think I can get them to add so that the 'bad pixel' flags don't contribute
to the sum, however, I can't simply divide by the number of arrays, as each
point in the array has had a different number of good pixels put into its
sum. Is there an easy way to keep track of the number points which went
into to the sum?

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