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Are there any examples on how to bias all shapes on a particular layer? I am trying to size a layer in a hierarchical layout.
you can achieve this with a DRC script (see https://www.klayout.de/doc-qt5/manual/drc_basic.html). As you mention you have hierarchical layout, you can try the "deep" switch which enables hierarchical mode:
# enable hierarchical mode
# for example to size all shapes on layer 123, datatype 0 by 200nm use:
input(123, 0).sized(200.nm).output(123, 0)
Hello Matthias, This does exactly what I need. Simple when you know how! Thanks