[Qgis-user] Qgis-user Digest, Vol 127, Issue 16
Latchman Anand
ablatchman at yahoo.com
Wed Sep 7 23:10:59 PDT 2016
Hi
I apologies to all member of qgis user about this email send from my email my email was hacked
Thank you
On Wednesday, September 7, 2016 9:01 PM, "qgis-user-request at lists.osgeo.org" <qgis-user-request at lists.osgeo.org> wrote:
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Today's Topics:
1. Re: Map view is blank (Alexandre Neto)
2. Linear referencing in QGIS (Neumann, Andreas)
3. Re: Linear referencing in QGIS (Paolo Cavallini)
4. Re: Linear referencing in QGIS (Neumann, Andreas)
5. Re: Linear referencing in QGIS (Paolo Cavallini)
6. Re: Linear referencing in QGIS (Matthias Kuhn)
7. Re: Linear referencing in QGIS (Neumann, Andreas)
8. Problems with the construction of tiles to leaflet
(massimiliano crea)
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Message: 1
Date: Tue, 06 Sep 2016 23:30:34 +0000
From: Alexandre Neto <senhor.neto at gmail.com>
To: Juerg Lindauer <Juerg.Lindauer at sz.ch>, qgis-user at lists.osgeo.org
Subject: Re: [Qgis-user] Map view is blank
Message-ID:
<CA+H0G_EzE=HXG7moZA3nfebkkwMxgQUWjeanssFVbzZ=3-qDbg at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Any chance to update QGIS? 2.14 is the new LTR version.
A ter, 6/09/2016, 08:50, Juerg Lindauer <Juerg.Lindauer at sz.ch> escreveu:
> Hi
>
> I have a problem with the map view. After a while i opend a qgis
> project, the map view was blinking and then the map view was blank.
>
> The message in the log was:
>
> 2016-09-06T08:57:48 1 Wald_Alpthal2016090608570869732445 ::
> Speicher reicht für Bild 1572x942 nicht aus
>
> The workaround is now to make the map view smaller. Then it work for
> while. But the behavior comes back, then i have to make again the map
> view smaller or to close the project file.
>
> I use Windows 7 32-bit with 4 GB RAM and QGIS 2.8.9.
>
> Has anybody a hint for me? To change my computer is not easy, because
> we have very strong internal restrictions.
>
> Jürg Lindauer
>
>
> Amt für Landwirtschaft
> Abt. Agrarmassnahmen und Bodenrecht
> Hirschistrasse 15
> Postfach 5182
> 6431 Schwyz
> Telefon: 041 819 15 17
> Telefax: 041 819 15 19
> E-Mail: juerg.lindauer at sz.ch
> Internet: www.sz.ch/landwirtschaft
>
>
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user
--
Alexandre Neto
---------------------
@AlexNetoGeo
http://sigsemgrilhetas.wordpress.com
http://gisunchained.wordpress.com
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Message: 2
Date: Wed, 07 Sep 2016 14:24:27 +0200
From: "Neumann, Andreas" <a.neumann at carto.net>
To: QGIS User List <Qgis-user at lists.osgeo.org>
Subject: [Qgis-user] Linear referencing in QGIS
Message-ID: <4576bb8a05926d47ef2cb3bbff7349d9 at carto.net>
Content-Type: text/plain; charset="utf-8"
Hi,
A friend of mine asked me if QGIS can do linear referencing - e.g.
symbolizing road data speed limits along a road, lets say from km 0 to
0.76 there is a limit of 50 km/h, from 0.76 to 1.23 there is 80 km/h
limit, etc.
The idea is to symbolize these road segments without having to actually
split the data into bits. And hopefully without having to generate
derived tables that have no link to the original data.
Is QGIS able to do this, perhaps with a plugin?
Thanks for any hints,
Andreas
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Message: 3
Date: Wed, 7 Sep 2016 14:28:25 +0200
From: Paolo Cavallini <cavallini at faunalia.it>
To: qgis-user at lists.osgeo.org
Subject: Re: [Qgis-user] Linear referencing in QGIS
Message-ID: <5547a7b3-d96a-3152-05c9-afa01fce3ac4 at faunalia.it>
Content-Type: text/plain; charset=utf-8
Il 07/09/2016 14:24, Neumann, Andreas ha scritto:
> Hi,
>
> A friend of mine asked me if QGIS can do linear referencing - e.g.
> symbolizing road data speed limits along a road, lets say from km 0 to
> 0.76 there is a limit of 50 km/h, from 0.76 to 1.23 there is 80 km/h
> limit, etc.
>
> The idea is to symbolize these road segments without having to actually
> split the data into bits. And hopefully without having to generate
> derived tables that have no link to the original data.
>
> Is QGIS able to do this, perhaps with a plugin?
Yes:
http://plugins.qgis.org/plugins/lrs/
Best if using PostGIS though.
All the best.
--
Paolo Cavallini - www.faunalia.eu
QGIS & PostGIS courses: http://www.faunalia.eu/training.html
------------------------------
Message: 4
Date: Wed, 07 Sep 2016 14:47:14 +0200
From: "Neumann, Andreas" <a.neumann at carto.net>
To: Paolo Cavallini <cavallini at faunalia.it>
Cc: qgis-user at lists.osgeo.org
Subject: Re: [Qgis-user] Linear referencing in QGIS
Message-ID: <559592254a2f5579def7650306a4d7bf at carto.net>
Content-Type: text/plain; charset="utf-8"
Hi Paolo,
Thanks - it looks quite powerful. And yes - they would use it with
Postgis data.
Can one also create point or linear events interactively in QGIS? I did
not see this in the description of the plugin. I see that one can query
measurements in the "Localize tab" and that an events table can be
defined and visualized (in memory layer) - which is quite cool. But can
one also interactively edit the events table by clicking along a route
and thus filling the events table?
Thanks,
Andreas
On 2016-09-07 14:28, Paolo Cavallini wrote:
> Il 07/09/2016 14:24, Neumann, Andreas ha scritto:
>
>> Hi,
>>
>> A friend of mine asked me if QGIS can do linear referencing - e.g.
>> symbolizing road data speed limits along a road, lets say from km 0 to
>> 0.76 there is a limit of 50 km/h, from 0.76 to 1.23 there is 80 km/h
>> limit, etc.
>>
>> The idea is to symbolize these road segments without having to actually
>> split the data into bits. And hopefully without having to generate
>> derived tables that have no link to the original data.
>>
>> Is QGIS able to do this, perhaps with a plugin?
>
> Yes:
> http://plugins.qgis.org/plugins/lrs/
> Best if using PostGIS though.
> All the best.
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Message: 5
Date: Wed, 7 Sep 2016 15:17:38 +0200
From: Paolo Cavallini <cavallini at faunalia.it>
To: "Neumann, Andreas" <a.neumann at carto.net>
Cc: qgis-user at lists.osgeo.org
Subject: Re: [Qgis-user] Linear referencing in QGIS
Message-ID: <4f4eda9c-f024-f114-23ef-b1248c2c44fa at faunalia.it>
Content-Type: text/plain; charset=utf-8
Il 07/09/2016 14:47, Neumann, Andreas ha scritto:
> Hi Paolo,
>
> Thanks - it looks quite powerful. And yes - they would use it with
> Postgis data.
>
> Can one also create point or linear events interactively in QGIS? I did
> not see this in the description of the plugin. I see that one can query
> measurements in the "Localize tab" and that an events table can be
> defined and visualized (in memory layer) - which is quite cool. But can
> one also interactively edit the events table by clicking along a route
> and thus filling the events table?
I have done this with plain PostGIS and a few forms, with some
limitations however. We have been discussing with some devs about
possibilities of improvement.
All the best.
--
Paolo Cavallini - www.faunalia.eu
QGIS & PostGIS courses: http://www.faunalia.eu/training.html
------------------------------
Message: 6
Date: Wed, 7 Sep 2016 15:34:52 +0200
From: Matthias Kuhn <matthias at opengis.ch>
To: qgis-user at lists.osgeo.org
Subject: Re: [Qgis-user] Linear referencing in QGIS
Message-ID: <eac5dca5-73a5-1032-87ae-84447cdaa26f at opengis.ch>
Content-Type: text/plain; charset=utf-8
Hi Andreas,
In QGIS 2.18 / QGIS 3.0 this should be possible via expressions:
https://github.com/qgis/QGIS/commit/e110ba7d54b0ac7d3f63e8ed7eaebb2845f9f38c
Best regards
Matthias
On 09/07/2016 02:24 PM, Neumann, Andreas wrote:
> Hi,
>
> A friend of mine asked me if QGIS can do linear referencing - e.g.
> symbolizing road data speed limits along a road, lets say from km 0 to
> 0.76 there is a limit of 50 km/h, from 0.76 to 1.23 there is 80 km/h
> limit, etc.
>
> The idea is to symbolize these road segments without having to actually
> split the data into bits. And hopefully without having to generate
> derived tables that have no link to the original data.
>
> Is QGIS able to do this, perhaps with a plugin?
>
> Thanks for any hints,
>
> Andreas
>
>
>
>
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user
>
------------------------------
Message: 7
Date: Wed, 07 Sep 2016 16:51:21 +0200
From: "Neumann, Andreas" <a.neumann at carto.net>
To: Matthias Kuhn <matthias at opengis.ch>
Cc: qgis-user at lists.osgeo.org
Subject: Re: [Qgis-user] Linear referencing in QGIS
Message-ID: <2d60e42557d72ffed0c798b39ee16922 at carto.net>
Content-Type: text/plain; charset="utf-8"
Hi,
Yes, I know about LR expressions in the current master versions.
So one could visualize the events table through a virtual geometry
column - would that work?
I will forward all this information to my friend.
Greetings,
Andreas
On 2016-09-07 15:34, Matthias Kuhn wrote:
> Hi Andreas,
>
> In QGIS 2.18 / QGIS 3.0 this should be possible via expressions:
>
> https://github.com/qgis/QGIS/commit/e110ba7d54b0ac7d3f63e8ed7eaebb2845f9f38c
>
> Best regards
> Matthias
>
> On 09/07/2016 02:24 PM, Neumann, Andreas wrote:
>
>> Hi,
>>
>> A friend of mine asked me if QGIS can do linear referencing - e.g.
>> symbolizing road data speed limits along a road, lets say from km 0 to
>> 0.76 there is a limit of 50 km/h, from 0.76 to 1.23 there is 80 km/h
>> limit, etc.
>>
>> The idea is to symbolize these road segments without having to actually
>> split the data into bits. And hopefully without having to generate
>> derived tables that have no link to the original data.
>>
>> Is QGIS able to do this, perhaps with a plugin?
>>
>> Thanks for any hints,
>>
>> Andreas
>>
>> _______________________________________________
>> Qgis-user mailing list
>> Qgis-user at lists.osgeo.org
>> List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
>> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user
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Message: 8
Date: Wed, 7 Sep 2016 17:33:48 +0000 (UTC)
From: massimiliano crea <ma.crea at yahoo.it>
To: Qgis-user <qgis-user at lists.osgeo.org>
Subject: [Qgis-user] Problems with the construction of tiles to
leaflet
Message-ID: <1171964630.2007909.1473269628959 at mail.yahoo.com>
Content-Type: text/plain; charset="utf-8"
I am creating a map that I have to export tiles to leaflet. I tried first with qtiles but the labels do not fit between the various tiles, then I tried with TileMill to load the layers but exporting Mbtiles I noticed that the areas referred to zoom does not correspond with each other, and between qtiles mbtiles. Why? What interests me is to obtain the coordinates used by Qtiles. How do I get tiles with the same coordinates?Can you help out?
Thank you
Massimiliano Crea
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