X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
X-Injected-Via-Gmane: http://gmane.org/
To: geda-user AT delorie DOT com
From: Kai-Martin Knaak <knaak AT iqo DOT uni-hannover DOT de>
Subject: Re: [geda-user] Prevent PCB Designer to change my thoughts
Date: Sat, 02 Jul 2016 00:51:41 +0200
Organization: Institut =?UTF-8?B?ZsO8cg==?= Quantenoptik
Lines: 46
Message-ID: <nl6s5t$bf7$1@ger.gmane.org>
References: <5775D82C DOT 30001 AT gmail DOT com> <201607010246 DOT u612kM1s028703 AT envy DOT delorie DOT com> <57764D18 DOT 6010105 AT gmail DOT com> <CAOFvGD4AUyfjM_A_ZLwPScZO_bYYKbownSRniS0pkgSAhSDf+w AT mail DOT gmail DOT com>
Mime-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
X-Complaints-To: usenet AT ger DOT gmane DOT org
X-Gmane-NNTP-Posting-Host: 130.75.103.191
User-Agent: KNode/4.14.10
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id u61MpuZd014317
Reply-To: geda-user AT delorie DOT com

Jason White wrote:

>> So, where can be the rub that pcb merge only some and not others then?
>> Can the cause be related to rounding and unit converting inside that
>> dxf2pcb tool?

Sounds plausible. My guess in the dark would be, that dxf2pcb does not do 
nanometer precision, which is the resolution pcb uses since a few years. 
If dxf2pcb emits coords given in integer multiples of 1 mil, it kind of 
jettisons three orders of magnitude of precision.

Do you know the utility pstoedit (distributed e.g. by Debian)? This is a 
third party tool which converts postscript to a number of formats used by 
drawing applications. One of the formats happens to be pcb. I'd use 
inkscape to produce the postscript file.

BTW, I saw your comments on unit mixing on the sourceforge discussion page 
of dxf2pcb. Yes, pcb likes to choose units on an item-to-item base 
according to non-trivial rules. Fortunately, since about 2014 unit mixing 
can be prevented by the directive "save-metric-only = 1" in 
$HOME/.pcb/preferences . This is a non-documented feature which apparently 
did not make it to the manual. Command line help "pcb -h" reveals it, 
though.

---<)kaimartin(>---
-- 
Kai-Martin Knaak                                  tel: +49-511-762-2895
Universität Hannover, Inst. für Quantenoptik      fax: +49-511-762-2211	
Welfengarten 1, 30167 Hannover           http://www.iqo.uni-hannover.de
GPG key:    http://pgp.mit.edu:11371/pks/lookup?search=Knaak+kmk&op=get