Yes, these should work, although there are a couple of things worth pointing out.
First, the blur filters ignore the selection when computing their result, and only
apply it afterwards -- this makes your approach work, but means that it can take
a very long time if the slicing is fine. Second, if the filter does not ignore the
selection, your approach might not give the right results.
>From a mathematical point of view, a variable blur is a rather special thing, and
I think in the long run there is no substitute for just biting the bullet and doing
it correctly. But your approach is definitely better than the others that have been
suggested.
Best,
--- Bill
>I had thought about this.
>What I found out is that tit will be easy to modify the "filter all
>layers" GAP filter to to right that:
>Add a "select map image" widget, and a "value step" choice.
>
>On the map image, make a selection by value range. For each value
>range apply the filter on the target image, with the obtained
>selection.
>
>I will try to work on that.
>
>Meanwhile, the scripts I posted on the other message can work for
>applying a single filter with a linear variation across a image.
>
>Regards,
> JS
> -><-
>
>
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