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Dear Matthias,
I sometimes have identical polygons that will trigger (false-positive) overlap with the "merged()" method. Is there a way to first remove identical polygons?
Xaveer
Comments
Hi Xaveer,
but delivering the overlap between two shapes even if they are identical is a part of the feature. So suppressing overlap just in that case seems like an arbitrary restriction to me.
If you look for "layout normalization": removing duplicate shapes is a side effect of OASIS saving (with compression). Maybe this helps.
Regards,
Matthias
Hi Matthias,
Indeed, I understand that this will limit the function of the overlap check, but for now that would still be preferred.
How to specify compression on the OASIS saving? I now use target() in the DRC runset, but it is not clear to me how to pass any options.
Thanks,
Xaveer
Hi Matthias,
Compression is the default, so it works without other options.
Thanks a lot!
Xaveer
Yes exactly, compression is the default :-)
You can switch it off by setting the compression level to 0. But unless there is a specific reason you wouldn't do that.
Matthias
Although not needed now, how should I set the compression level?
Thanks,
Xaveer
It's set in the "Writer Options" and is called "compaction level" there (sorry, naming consistency isn't my strength …). 0 is "no compression", 1 … enable compression with a increasingly deeper search for repetitions. On level 1 upwards, redundant shapes are removed as they comprise a kind of "null repetition".
Matthias