[Qgis-user] Re : Dotted line symbol in QGIS

[Andreas Neumann]

The stroke only on inside option would be useful - but for dashed/dotted 
lines you would still get undesirable results because of shifted dashes, 
due to different line-length of the polygon borders.

So the only two options I see is Stephans solution - which works fine as 
long as your map background is white anyway, or to make sure that the 
double lines are eliminated, achievable with a  number of tools (but not 
very dynamic, esp. for large data that changes a lot).

Or, the third option would be to use a topological data set from the 
start (e.g. GRASS data a topological Postgis tables).

Andreas

On 17.04.2015 20:39, Junior wrote:
> Hi.
> and what about using the "Draw line only inside polygon" option?
>
> Envoyé depuis mon HTC
>
> ----- Reply message -----
> De : "Chris Buckmaster" <chris.buckmaster at runnymede.gov.uk>
> Pour : "David Fawcett" <david.fawcett at gmail.com>, "Basques, Bob 
> (CI-StPaul)" <bob.basques at ci.stpaul.mn.us>
> Cc : "qgis-user at lists.osgeo.org" <qgis-user at lists.osgeo.org>
> Objet : [Qgis-user] Dotted line symbol in QGIS
> Date : ven., avr. 17, 2015 18:08
>
> Thanks David although we are using live data. Stefan’s approach is a 
> good one so I think I will continue with that, thanks for everyone’s 
> responses
>
> Chris
>
> *From:*David Fawcett [mailto:david.fawcett at gmail.com]
> *Sent:* 17 April 2015 17:01
> *To:* Basques, Bob (CI-StPaul)
> *Cc:* Ziegler Stefan; Chris Buckmaster; qgis-user at lists.osgeo.org
> *Subject:* Re: [Qgis-user] Dotted line symbol in QGIS
>
> Here is another solution that would work if you are not mapping live 
> data, and you can use a derived product.  Convert your polygon dataset 
> to lines.  The, use Vector>Dissolve to remove duplicated lines where 
> they are overlapping.
>
> David.
>
> On Fri, Apr 17, 2015 at 9:54 AM, Basques, Bob (CI-StPaul) 
> <bob.basques at ci.stpaul.mn.us <mailto:bob.basques at ci.stpaul.mn.us>> wrote:
>
> Hey Stefan,
>
> Neat trick/idea with the white line.  I’ll have to write that one 
> down.  Hmm, I wonder instead of white though, if you could convert 
> that to transparent as well . . . .
>
> Bobb
>
> *From:*qgis-user-bounces at lists.osgeo.org 
> <mailto:qgis-user-bounces at lists.osgeo.org> 
> [mailto:qgis-user-bounces at lists.osgeo.org 
> <mailto:qgis-user-bounces at lists.osgeo.org>] *On Behalf Of *Ziegler Stefan
> *Sent:* Friday, April 17, 2015 7:05 AM
> *To:* 'Chris Buckmaster'; 'qgis-user at lists.osgeo.org 
> <mailto:qgis-user at lists.osgeo.org>'
> *Subject:* Re: [Qgis-user] Dotted line symbol in QGIS
>
> Hi
>
> Put a white line under the dotted line („Add symbol layer“).
>
> Perhaps there is also a solution with the blending modes?
>
> Regards
>
> Stefan
>
> *Von:*qgis-user-bounces at lists.osgeo.org 
> <mailto:qgis-user-bounces at lists.osgeo.org> 
> [mailto:qgis-user-bounces at lists.osgeo.org] *Im Auftrag von *Chris 
> Buckmaster
> *Gesendet:* Freitag, 17. April 2015 13:40
> *An:* qgis-user at lists.osgeo.org <mailto:qgis-user at lists.osgeo.org>
> *Betreff:* [Qgis-user] Dotted line symbol in QGIS
>
> Hi
>
> I have a boundary layer that I want to symbolise with a dotted line. 
> The outer boundary appears ok, but where two polygons are adjacent to 
> each other, the dotted line becomes virtually solid (indicated below). 
> How can I make these lines appear the same as my outer boundary lines…
>
> Thanks, Chris
>
>
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