X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f X-Recipient: geda-user AT delorie DOT com X-TCPREMOTEIP: 207.224.51.38 X-Authenticated-UID: jpd AT noqsi DOT com Content-Type: text/plain; charset=windows-1252 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Subject: Re: [geda-user] The new to do From: John Doty In-Reply-To: <201507152007.t6FK7lv8005229@envy.delorie.com> Date: Wed, 15 Jul 2015 14:37:32 -0600 Message-Id: <24AD56C6-B7C2-4D7E-B69A-F68DBACCBFDC@noqsi.com> References: <55A2A0A2 DOT 4080403 AT ecosensory DOT com> <7AE39440-DA68-4491-A965-C1B97D1D86C1 AT sbcglobal DOT net> <20150712213152 DOT 7968b74c AT jive DOT levalinux DOT org> <304D9D86-3CF6-4D61-A5CA-6CE414EA0661 AT sbcglobal DOT net> <20150712224637 DOT 2d4cc2de AT wind DOT levalinux DOT org> <55A2E9B7 DOT 9040502 AT neurotica DOT com> <20150713131707 DOT GA782 AT recycle DOT lbl DOT gov> <55A4042E DOT 5060402 AT neurotica DOT com> <55A41B30 DOT 50602 AT neurotica DOT com> <254F9AFE-1A3E-4D88-BABF-E6E0F87A56B1 AT icloud DOT com> <1436960577 DOT 1072 DOT 6 DOT camel AT ssalewski DOT de> <201507151820 DOT t6FIKYME001704 AT envy DOT delorie DOT com> <46010EEB-8968-4635-9F1B-F4AE8147F24A! ! @noqsi.com> <201507152007 DOT t6FK7lv8005229 AT envy DOT delorie DOT com> To: geda-user AT delorie DOT com X-Mailer: Apple Mail (2.1878.6) Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id t6FKbeTh011292 Reply-To: geda-user AT delorie DOT com Errors-To: nobody AT delorie DOT com X-Mailing-List: geda-user AT delorie DOT com X-Unsubscribes-To: listserv AT delorie DOT com Precedence: bulk On Jul 15, 2015, at 2:07 PM, DJ Delorie wrote: > In your most recent example, you forcibly included spice in a > discussion of trace widths, something spice doesn't have a concept of. And this is exactly the problem I see. A proper general mechanism would allow one to associate *properties* with net segments, not just trace widths. Furthermore, trace width might come into SPICE in a calculation of derived electrical properties. Your imagination skips too quickly into a short cut to a pcb application. But geda-gaf’s greatness is comes partly from the fact that there are few such short cuts in it (see my comment of Viewlogic earlier today). John Doty Noqsi Aerospace, Ltd. http://www.noqsi.com/ jpd AT noqsi DOT com