Re: [PEDA] Polygon Filled Planes

[Ian Wilson]

Robert,

Regarding your problem with Polygon pours, another technique that may be useful is to save the file into ASCII format.

I am not sure about this under P99SE but under V3 (or maybe P98) it was certainly true that ASCII file load (called parametric load by the software) did additional parameter and range checking not done during binary load. This was stated at the time to be a useful technique for file issues.

The ASCII file can also be used to ferret out stray objects at wild locations, including the classic (but rare these days) ghost polygons - use a capable text editor for this manipulation.

Ultimately, you may be best off deleting the poly and reforming it. At time people have had difficulty removing problem polys - this can be done in the ASCII file with care. You need to remove the polygon as well as the tracks that belong to the polygon - identifying the tracks that belong to the poly is not overly difficult. A text editor that supports regular expressions for searches and selections is a great boon.

Marking the polygon vertices with track segments or pads before you delete it can really help rebuild it if its placement is critical. Even this is done more easily in ASCII as the snap feature in P99SE is not very good at dealing with polygons (it snaps to the tracks of the poly rather than the boundary).

Saving a PCB file as ASCII will loose the hidden links with the Sch and so you will need to rematch by designator following the reload, make sure you save-as binary again and make sure you have correctly synched Sch and PCB before starting the save-as ASCII process (or at least make sure all designators match so you can easily re-match).

Maybe something here will be of use to someone,
Ian


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