[Gdal-dev] how to "for each poly do X" ?

[matt wilkie]

Hi All, this is likely a little offtopic for this list, or at least off the
beaten path, but the folks who hang out here are likely to know where to
point me... I'm working on a project processing a lot of landsat7 and other
images and tile-management is so far the hardest part I've tackled. I need
to break things into pieces, do some work on them, and then reassemble them
and stuff them somewhere else, largely unattended.

Under ArcInfo I'd use AML and cursors: basically for each polygon in an
index cover do X,Y and Z. I'm at a loss so far to how to do the same thing
with the open source tools I have. Namely fwtools, qgis and ossim (all on
windows). Where do I begin?  I imagine this to be common scenario, how
are/have other people handled it?

thanks in advance for your thoughts,

-matt
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