[Qgis-user] Double line Feature

[Matej Mailing]

Basically we need this to define some sort of "protected area" (for example,
30 cm in both sides from the cable) along some telecommunication network
cables (mainly optical) and therefore I don't think only the representation
would be sufficient. Probably some plugin that would create polygon with a
centralized line that we are "snapping to" and with defined area (width)
would be even better than just two lines, because this way we could define
some color of fill of that closed "part" around cable in our projects for
example. Hopefully I explained it enough clearly, if you need more
information, please let me know :-)

Thanks,
Matej

2011/10/25 Andreas Neumann <a.neumann at carto.net>

> If I understand you correctly, you just want to symbolize an existing
> LINESTRING feature with double lines. You don't want to add additional
> parallel features, correct?
>
> If you look at the new symbology engine, you can stack multiple lines upon
> each other. F.e. you can create a thick black line and add a tinner white or
> yellow line on top of each other. This way you symbolize line features and
> they appear as a double line. You can also create two lines and offset them
> from the center.
>
> For snapping, the center of the line will be used.
>
> Is it this that you are looking for?
>
> Andreas
>
>
> On Tue, 25 Oct 2011 12:24:32 +0200, Matej Mailing wrote:
>
>> Thanks for the information! We have looked at the CADTools and the
>> option for drawing parallel, but just to "assign" parallel lines to
>> existing line objects. What we are basically looking for is tool to
>> draw double lines in a separate layer, but in a way of snapping some
>> existing line in the centre of double line.
>>
>> Thanks,
>> Matej
>>
>> 2011/10/25 Giovanni Manghi
>>
>>  In the cadtools toolbox you have a tool do draw parallel lines.
>>>
>>> cheers
>>>
>>> -- Giovanni --
>>>
>>> On Tue, 2011-10-25 at 12:01 +0200, Matej Mailing wrote:
>>> > Hi all,
>>> >
>>> > It would be very useful to have a feature to draw a Double line
>>> in
>>> > QGIS. Is this currently possible?
>>> >
>>> > Thanks.
>>> > Matej
>>>
>>>  ______________________________**_________________
>>>>
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>>>
>>
>>
>>
>> Links:
>> ------
>> [1] mailto:Qgis-user at lists.osgeo.**org <Qgis-user at lists.osgeo.org>
>> [2] http://lists.osgeo.org/**mailman/listinfo/qgis-user<http://lists.osgeo.org/mailman/listinfo/qgis-user>
>> [3] mailto:giovanni.manghi at gmail.**com <giovanni.manghi at gmail.com>
>>
>
> --
> --
> Andreas Neumann
> Böschacherstrasse 10A
> 8624 Grüt (Gossau ZH)
> Switzerland
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