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get pcells within a polygonal area, hierarchically

caver456

We have a polygon (not rectangle) at the top level, and pcells within that polygon's area, at various levels of hierarchy.  We would like to read properties from all of those pcells.

A version of geSelectArea that would allow a start and stop level, instead of only selecting in the top level, would accomplish the goal.  dbGetOverlaps descends the hierarchy, and would work great if you could specify a non-rectangular search area.

Any ideas?

Thanks

Parents

  • I don't think I could guess, because it is likely to be highly dependent upon the size of the region and how many tiles it would need, as well as the number of pcell instances you're likely to find. Even if I knew that I'm not sure I could guess which is likely to be the most efficient. Given the fact that you have abPointInPolygon, I don't think it's much code. Similarly fracturing the polygon (which could be done with dbLayerTile or the abe functions) won't be much code, nor would doing the reverse dbGetOverlaps.

    I suspect that in most cases any one would do and it wouldn't be worth re-implementing the other ways to find out unless there are a huge number of instances to check.

    Regards,

    Andrew

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  • I don't think I could guess, because it is likely to be highly dependent upon the size of the region and how many tiles it would need, as well as the number of pcell instances you're likely to find. Even if I knew that I'm not sure I could guess which is likely to be the most efficient. Given the fact that you have abPointInPolygon, I don't think it's much code. Similarly fracturing the polygon (which could be done with dbLayerTile or the abe functions) won't be much code, nor would doing the reverse dbGetOverlaps.

    I suspect that in most cases any one would do and it wouldn't be worth re-implementing the other ways to find out unless there are a huge number of instances to check.

    Regards,

    Andrew

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