Hi,
I teach an introduction to GIS using qgis and we had random crashes, Osgeo4w
installer problems. Very hard to trace the cause since the students could
not replicate the issues or properly describe what went wrong.
Cheers
michael
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Today's Topics:
1. random crashes during editing (Paolo Cavallini)
2. Re: random crashes during editing (nikos ves)
3. Sv: Re: Sv: Re: [Qgis-user] Creating polygon from points in
csv file (Ulf Almroth)
4. Re: Sv: Re: Sv: Re: [Qgis-user] Creating polygon from points
incsv file (Goyo)
--
Message: 1
Date: Tue, 25 May 2010 18:44:08 +0200
From: Paolo Cavallini
Subject: [Qgis-user] random crashes during editing
To:
Message-ID:
Content-Type: text/plain; charset="UTF-8"
Hi all.
Today, during a course, we got a few random crashes, both on Debian and on
Windows, during editing, with topological editing, snapping, avoid
overlapping polygons all enabled. Very difficult to report, as I had little
time to check, and they are apprently difficult to replicate.
Has anybody had the same experience?
All the best.
--
http://faunalia.it/pc
--
Message: 2
Date: Tue, 25 May 2010 20:29:31 +0300
From: nikos ves
Subject: Re: [Qgis-user] random crashes during editing
To: qgis-user@lists.osgeo.org
Message-ID: <1274808571.3041.2.ca...@nikos-desktop>
Content-Type: text/plain; charset="UTF-8"
On Tue, 2010-05-25 at 18:44 +0200, Paolo Cavallini wrote:
> Hi all.
> Today, during a course, we got a few random crashes, both on Debian and on
> Windows, during editing, with topological editing, snapping, avoid
> overlapping polygons all enabled. Very difficult to report, as I had
little
> time to check, and they are apprently difficult to replicate.
> Has anybody had the same experience?
> All the best.
Ye i had some crashes (random mostly) when adding data and/or editing
from databases. Im using SVN version. Console output was saying about
"segmentation fault". Nothing else of value that could point at the
problem.
--
nikos ves
--
Message: 3
Date: Tue, 25 May 2010 20:59:13 +0200 (CEST)
From: Ulf Almroth
Subject: Sv: Re: Sv: Re: [Qgis-user] Creating polygon from points in
csv file
To:
Cc: qgis-user List
Message-ID:
<31848290.1374981274813953140.javamail.tom...@ps11.han.skanova.net>
Content-Type: text/plain;charset="ISO-8859-1"
Hello Goyo,
I see I made a bad choice of sample file. The Z is the same in
polygons because they represent small buildings. To create them the
corners of the roofs were measured in the stereomodel resulting in the
same z values. Of course a lot of objects have a common Z like lakes
and shorelines and many others. The more general case is that Z i
varying from ponint to point in the polygon or line. Think of polygons
representing landuse or cadstral divisons or lines representing streams
or roads. In this simple file structure a line looks like this:
STOLP 1868536.305 7323297.568 5.206 21
STOLP 1868514.063 7323234.352 2.558 22
STOLP 1868445.482 7323050.904 3.220 22
STOLP 1868514.063 7323234.352 2.558 23
The polygon differs rom the line in that the points with pencode 21 &v
23 have the same coordinates indicating the closure. Point have the
pencode 11 indicating no connection:
AHP,1868280.000,7323450.000,0.271,11
AHP,1868300.000,7323450.000,1.324,11
AHP,1868320.000,7323450.000,0.542,11
I tried to get those files into Qgis but with no complete succes. There
is one plug in redings csv files ok but i does not take care of the
topology and only reads X & Y.
Best regards
Ulf
Ursprungligt meddelande
Fren: goyod...@gmail.com
Datum: 2010-05-24 22:35
Till: "Ulf Almroth"
Kopia: "MORREALE Jean Roc", "qgis-user List"
Drende: Re: Sv: Re: [Qgis-user] Creating polygon from points in csv
file
Hello Ulf,
El sab, 22-05-2010 a las 00:01 +0200, Ulf Almroth escribis:
> Hi,
>
> Using an attribute is agood idea. A lot of measuring devices
> generating ascii files with coordinates, e.g. various type of
surveying
> equipment and coordinate measuring devices
> for industrial use produces file that basically look lik
