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Date: Sun, 15 Dec 2019 10:19:40 +0100
From: "N (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] gnetlist, attributes, fort "use cases"
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> ...
> If you find a reason to want to transfer additional attributes, it
> wouldn't be hard to extend the exporter and associated test suite cases.
> 
> Bdale

Actual uses cases. I do without them right now as usually they are only required for a few traces but use them if available.

Forgot this https://www.4pcb.com/trace-width-calculator.html so it is useful to set trace width attribute on nets though as actual width depend both on copper thickness and choice between inner or out layer set maximum current and choose trace width within layout program is probably a better choice.

I have also seen there are similar problem for radio circuit https://www.multi-circuit-boards.eu/en/pcb-design-aid/impedance-calculation.html there I thinnk it would make sense to set an attribute with the impedance value, though differential signals are more complicated at least some end up as trace width depending on board construction.


If then possible to select trace width depending on which net and preferably label trace is being drawn now mapping from either maximum current or Z0 can't be to hard to implement.


Regards Nicklas Karlsson