[Qgis-user] complete a polygon

[Blumentrath, Stefan]

Not sure if I misunderstood the question...
In case my hint to "Avoid intersection" was a bit short and therefor unclear please have a look here:
http://www.qgis.org/en/docs/user_manual/working_with_vector/editing_geometry_attributes.html#avoid-intersections-of-new-polygons
"Avoid intersection"is targeted at digitizing adjacent polygons, which is what I understood was the aim...

Cheers
Stefan

From: qgis-user-bounces at lists.osgeo.org [mailto:qgis-user-bounces at lists.osgeo.org] On Behalf Of Randal Hale
Sent: 6. mars 2014 13:29
To: qgis-user at lists.osgeo.org
Subject: Re: [Qgis-user] complete a polygon

Tata,

You are referring to a tool that is comparable to autocomplete in the ESRI world. The closest I have gotten is the autotrace plugin  (and it's not comparable - but it's closer to what you are looking for - http://www.lutraconsulting.co.uk/resources/autotrace). As for a process - the best (as far as I know and I hope I am wrong) is to digitize your work area as polylines - at the end convert them to polygons (vector -> geometry tools -> lines to polygons). It would save some clicking but would add a step (or maybe two).

Anyway - Good luck!

Randy



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Randal Hale, GISP

North River Geographic Systems, Inc

http://www.northrivergeographic.com

423.653.3611 rjhale at northrivergeographic.com<mailto:rjhale at northrivergeographic.com>

twitter:rjhale

http://about.me/rjhale
On 03/06/2014 07:05 AM, Blumentrath, Stefan wrote:
Avoid Intersection is under "Settings" --> "Snapping options".
If that is checked for your layer you can simply continue digitizing with the "create polygon" tool...
Cheers
Stefan


From: 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 SIT delle Riserve Naturali di Legambiente Sicilia
Sent: 6. mars 2014 12:30
To: Saber Razmjooei
Cc: qgis-user
Subject: Re: [Qgis-user] complete a polygon

Dear Saber, thank you!
But this tools allows me to complete a polygon "inside" another.
I'm searching for a tool that alow me to complete a polygon outside another, that has common sides
If I have polygon 1 and 2, andI wan to to digitize polygon 3, I'm searching a tool that allow me to digitize pol 3 without redraw the common sides with 1 and 2 (in thi case ise very simple redraw,, but with complex and natural polygons it is an heavy WORK!!)
Thank you.

Tata[cid:image001.jpg at 01CF3942.37502DE0]
Il 06/03/2014 11:14, Saber Razmjooei ha scritto:

If I have understood your question correctly, you can use AutoTrace plugin.



See more details here:

http://www.lutraconsulting.co.uk/resources/autotrace



Cheers

Saber



On 6 Mar 2014 10:05, SIT delle Riserve Naturali di Legambiente Sicilia <sit at legambienteriserve.it><mailto:sit at legambienteriserve.it> wrote:



Hi,

I have to add a new polygon to other existing; they have obviously

common sides; how can I draw only sides not common?

Thank you



Tata Livreri



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Legambiente Comitato Regionale Siciliano

Ufficio Gestione Riserve

Sistema Informativo Territoriale

tel 0916262697 - 0906264139

www.legambienteriserve.it<http://www.legambienteriserve.it>

via Tripoli 3 - Palermo 90138

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