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From: "James Battat (jbattat AT wellesley DOT edu) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Subject: Re: [geda-user] modifying the width of a group of tracks in pcb
Date: Fri, 29 Apr 2016 00:13:37 -0400
References: <188AA225-D025-42A2-B798-72B46BCB5916 AT wellesley DOT edu> <alpine DOT DEB DOT 2 DOT 00 DOT 1604290550360 DOT 28818 AT igor2priv>
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	charset=windows-1252

Thanks for the suggestions. =20

The =93F=94 keyboard shortcut (=93find connections=94) will highlight an =
entire track.=20
Is there a similar function that selects a full track (not just a single =
track segment)?

James

On Apr 28, 2016, at 11:54 PM, gedau AT igor2 DOT repo DOT hu wrote:

>=20
>=20
> On Thu, 28 Apr 2016, James Battat (jbattat AT wellesley DOT edu) [via =
geda-user AT delorie DOT com] wrote:
>=20
>> I designed a board with some 50 ohm microstrip tracks, whose widths =
(13.5mil) were chosen for a particular board house.  I now need to use a =
different board house, with a different dielectric and prepreg =
thickness, and so will need to change the widths of all of my 50ohm =
tracks.
>>=20
>> 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?
>=20
> I'd do it like this:
>=20
> 1. open the design in pcb, clear selection
> 2. select all microstrip tracks
> 3. save & quit
> 4. write an awk one-liner that modifies the width value in the pcb =
file if the same line matches "^[ \t]*Line[[].*selected"
> 5. open the new design in pcb, microstrip lines should be still =
selected, manually check the result at a few places randomly
>=20
> HTH,
>=20
> Igor2
>=20
>=20


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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dwindows-1252"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Thanks =
for the suggestions. &nbsp;<div><br></div><div>The =93F=94 keyboard =
shortcut (=93find connections=94) will highlight an entire =
track.&nbsp;</div><div>Is there a similar function that selects a full =
track (not just a single track =
segment)?</div><div><br></div><div>James<br><div =
apple-content-edited=3D"true">
<div style=3D"color: rgb(0, 0, 0); letter-spacing: normal; orphans: =
auto; text-align: start; text-indent: 0px; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;"><br></div></div><div><div>On Apr 28, 2016, at 11:54 =
PM, <a href=3D"mailto:gedau AT igor2 DOT repo DOT hu">gedau AT igor2 DOT repo DOT hu</a> =
wrote:</div><br class=3D"Apple-interchange-newline"><blockquote =
type=3D"cite"><br><br>On Thu, 28 Apr 2016, James Battat (<a =
href=3D"mailto:jbattat AT wellesley DOT edu">jbattat AT wellesley DOT edu</a>) [via <a =
href=3D"mailto:geda-user AT delorie DOT com">geda-user AT delorie DOT com</a>] =
wrote:<br><br><blockquote type=3D"cite">I designed a board with some 50 =
ohm microstrip tracks, whose widths (13.5mil) were chosen for a =
particular board house. &nbsp;I now need to use a different board house, =
with a different dielectric and prepreg thickness, and so will need to =
change the widths of all of my 50ohm tracks.<br><br>Many tracks in my =
layout are also 13.5 mil wide even though they are not meant to be =
controlled impedance runs. &nbsp;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. &nbsp;But in the =
meantime, any recommendations for doing a batch modification of the =
trace width of a group of selected traces?<br></blockquote><br>I'd do it =
like this:<br><br>1. open the design in pcb, clear selection<br>2. =
select all microstrip tracks<br>3. save &amp; quit<br>4. write an awk =
one-liner that modifies the width value in the pcb file if the same line =
matches "^[ \t]*Line[[].*selected"<br>5. open the new design in pcb, =
microstrip lines should be still selected, manually check the result at =
a few places =
randomly<br><br>HTH,<br><br>Igor2<br><br><br></blockquote></div><br></div>=
</body></html>=

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