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Subject: Re: [geda-user] Find rat lines
From: John Doty <jpd AT noqsi DOT com>
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Date: Sun, 16 Dec 2012 22:14:26 -0700
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On Dec 16, 2012, at 8:37 PM, Peter Stuge wrote:

> John Doty wrote:
>> Short circuits involve engineering intention
> 
> What? The short circuit discussed here is about separate nets in the
> netlist being connected together by copper in a design.

Yes, and "separate nets" is a matter of engineering intention.

> 
> 
>>> The only bad thing with PCB's method is the highlighting of shorts
>> 
>> I don't think that a program can reliably deduce the intention of
>> the designer here
> 
> I don't think anyone is working toward such a goal. Why do you think
> that?

Because a short between net A and net B occurs at a point where net A touches net B. But if the software cannot identify which conductors belong to net A, and which belong to net B, the location of that point is ambiguous.

John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd AT noqsi DOT com