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Date: Thu, 28 Apr 2016 23:44:29 -0400
Message-Id: <201604290344.u3T3iTAa005261@envy.delorie.com>
From: DJ Delorie <dj AT delorie DOT com>
To: geda-user AT delorie DOT com
In-reply-to: <188AA225-D025-42A2-B798-72B46BCB5916@wellesley.edu>
	(geda-user AT delorie DOT com)
Subject: Re: [geda-user] modifying the width of a group of tracks in pcb
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> Many tracks in my layout are also 13.5 mil wide even though they are
> not meant to be controlled impedance runs.  I'd like to leave these
> alone and only modify the width of the 50ohm runs. For future
> boards, I'll definitely only use the 50ohm trace width for 50ohm
> traces, in which case a straight sed search/replace will do what I
> need.  But in the meantime, any recommendations for doing a batch
> modification of the trace width of a group of selected traces?

In this case, you might consider moving those "special" traces to
another layer within the same layer group.  At the very least, they'll
be a different color, and you can use various tricks to select "all
traces in this group".

For the moment, assuming you can select all those traces (shift-click
etc), the magic you want is:

      :ChangeSize(SelectedLines,=14.7mil)