[Qgis-user] Double line Feature
Hi all, It would be very useful to have a feature to draw a Double line in QGIS. Is this currently possible? Thanks. Matej ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Double line Feature
Probably, you can view this custom railway-style (below) and modify to draw double line instead, if applicable. http://linfiniti.com/2010/12/video-tutorial-1-creating-a-custom-railway-style/ Noli On 10/25/11, Matej Mailing mail...@tam.si 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 ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Double line Feature
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 ___ Qgis-user mailing list Qgis-user@lists.osgeo.org [1] http://lists.osgeo.org/mailman/listinfo/qgis-user [2] Links: -- [1] mailto:Qgis-user@lists.osgeo.org [2] http://lists.osgeo.org/mailman/listinfo/qgis-user [3] mailto:giovanni.man...@gmail.com -- -- Andreas Neumann Böschacherstrasse 10A 8624 Grüt (Gossau ZH) Switzerland ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Double line Feature
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.neum...@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 __**_ Qgis-user mailing list Qgis-user@lists.osgeo.org [1] http://lists.osgeo.org/**mailman/listinfo/qgis-userhttp://lists.osgeo.org/mailman/listinfo/qgis-user[2] Links: -- [1] mailto:Qgis-user@lists.osgeo.**org Qgis-user@lists.osgeo.org [2] http://lists.osgeo.org/**mailman/listinfo/qgis-userhttp://lists.osgeo.org/mailman/listinfo/qgis-user [3] mailto:giovanni.manghi@gmail.**com giovanni.man...@gmail.com -- -- Andreas Neumann Böschacherstrasse 10A 8624 Grüt (Gossau ZH) Switzerland __**_ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/**mailman/listinfo/qgis-userhttp://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Double line Feature
On 2011-10-25 13:52, Matej Mailing wrote: 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 :-) Ah, is that what you want :-) That's called a 'Buffer' in gis terms: - load your cable layer in qgis - go to Vector menu and in Geoprocessing tools, choose Buffer - there you can choose for example 20 meter, this will create a 20 meter buffer == polygon around your lines - by creating a second buffer of say 50 meter, and giving that another color, I think you will have what you want Regards, Richard Duivenvoorde ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Double line Feature
I also think that buffer is what you really need to use. In order to snap to the original line just keep it in the project too. On Tue, Oct 25, 2011 at 1:08 PM, Richard Duivenvoorde rdmaili...@duif.netwrote: On 2011-10-25 13:52, Matej Mailing wrote: 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 :-) Ah, is that what you want :-) That's called a 'Buffer' in gis terms: - load your cable layer in qgis - go to Vector menu and in Geoprocessing tools, choose Buffer - there you can choose for example 20 meter, this will create a 20 meter buffer == polygon around your lines - by creating a second buffer of say 50 meter, and giving that another color, I think you will have what you want Regards, Richard Duivenvoorde ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Double line Feature
Am 25.10.2011 13:52, schrieb 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 :-) Hello! That sounds like you need a buffer :-) In QGIS, you find this functionality under Vector (fTools plugin) - Geoprocessing (or similar, I have just the german version at hand at the moment...) Albin -- | Albin Blaschka, Mag.rer.nat. | Etrichstrasse 26, A-5020 Salzburg | * www.albinblaschka.info * www.thinkanimal.info * | - It's hard to live in the mountains, hard but not hopeless! ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Double line Feature
Thanks to all of you! This is it - all current issues solved! :-) QGIS rules. With best regards, Matej 2011/10/25 Lauri Kajan lauri.ka...@gmail.com On Tue, Oct 25, 2011 at 9:48 PM, Matej Mailing mail...@tam.si wrote: This is almost it! :-) Now we get a lot of polygons - is it possible to combine all the polygons into one object (so that there are no borders inside it)? Thanks, Matej 2011/10/25 Albin Blaschka albin.blasc...@standortsanalyse.net Am 25.10.2011 13:52, schrieb 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 :-) Hello! That sounds like you need a buffer :-) In QGIS, you find this functionality under Vector (fTools plugin) - Geoprocessing (or similar, I have just the german version at hand at the moment...) Albin -- | Albin Blaschka, Mag.rer.nat. | Etrichstrasse 26, A-5020 Salzburg | * www.albinblaschka.info * www.thinkanimal.info * | - It's hard to live in the mountains, hard but not hopeless! ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user Hi Matej, Sure it is possible. You can use dissolve tool from Vector - geoprosessing tools - dissolve. And in the dialog select dissolve all. At least in the qgis 1.7.1 the dissolve tool is included in the buffer tool. In the buffer dialog you can check a dissolve option to dissolve all the buffers. Hopefully this helps. -Lauri ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
