[mapserver-users] Filter duplicate elements

[SF]

Hi,
I try to render simplified S57 files using MapServer with flash output. But
there are maps at various scales for the same area, which overlap. It is not
a problem for land or sea area, but I want to filter features to avoid
duplicates entries. In the S57 files, there is a worldwide identifier for
each feature. I wonder if it would be possible to use this ID to filter
duplicates, or if you must use mapscript or home made algorithm to do this.

Thank you in advance.
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