Re: [Qgis-user] road graph plugin: no starting point?

2011-05-05 Thread Sergey Yakushev
Hi.

Thu, 05 May 2011 07:53:20 +0200 письмо от Paolo Cavallini 
cavall...@faunalia.it:

 Hi all.
 I keep on getting Start point not on the road error. I tried different
What set layer coordinate reference system, project CRS and 'on the fly 
transformation'?

 topology settings (up to 99, the maximum allowed), to no avail.
Topological tolerance does not affect the binding point.
Topological tolerance is a distance between two nodes layer as one node a graph.

You need to set topology tolerance if you see message Can't find path, but 
not Start point no on the road.

 Any hint?

 Thanks.
 -- 
 Paolo Cavallini: http://www.faunalia.it/pc
 
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Re: [Qgis-user] road graph plugin: no starting point?

2011-05-05 Thread Anita Graser
Hi Paolo,

In my experience the plugin only works with graphs in WGS84 (or any lat/lon
system). And even then it's often a pain.

Best wishes,
Anita

On Thu, May 5, 2011 at 7:53 AM, Paolo Cavallini cavall...@faunalia.itwrote:

 Hi all.
 I keep on getting Start point not on the road error. I tried different
 topology settings (up to 99, the maximum allowed), to no avail.
 Any hint?
 Thanks.
 --
 Paolo Cavallini: http://www.faunalia.it/pc

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[Qgis-user] Re: [GRASS-user] OCR

2011-05-05 Thread Markus Neteler
On Wed, May 4, 2011 at 11:18 AM, ALT SHN i.geograf...@alt-shn.org wrote:
 Hello,

 This might seem a Little off topic, but maybe someone here can help me.

 I need to extract toponomical data from old digitized paper maps. I wish to
 explore Optical character recognition (OCR).

 Does anyone has a suggestion/experience with this kind of challenge?

You could try with this software:
http://www.gnu.org/software/ocrad/ocrad.html

Markus
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Re: [Qgis-user] road graph plugin: no starting point?

2011-05-05 Thread Paolo Cavallini
Il giorno gio, 05/05/2011 alle 08.36 +0200, Anita Graser ha scritto: 
 In my experience the plugin only works with graphs in WGS84 (or any
 lat/lon system). And even then it's often a pain.

Is this confirmed? Why is it a pain? Can something be done for it?
Thanks.
-- 
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Re: [Qgis-user] road graph plugin: no starting point?

2011-05-05 Thread Paolo Cavallini
Il giorno gio, 05/05/2011 alle 10.23 +0400, Sergey Yakushev ha scritto: 
 What set layer coordinate reference system, project CRS and 'on the fly 
 transformation'?

Tried both with metric coordinates (EPSG:3003), no OTF reprojection, and
with OTF, EPSG:4326).

 Topological tolerance is a distance between two nodes layer as one node a 
 graph.

Thanks for clarifying.
All the best.
-- 
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Re: [Qgis-user] road graph plugin: no starting point?

2011-05-05 Thread Anita Graser
Hi Sergey,

Topological tolerance does not affect the binding point.
 Topological tolerance is a distance between two nodes layer as one node a
 graph.

 You need to set topology tolerance if you see message Can't find path,
 but not Start point no on the road.


I see. Now I understand better which values to set to make it work when it
complains Can't find path.

How do you fix Start point no on the road? Is it always because of CRS
troubles (layer CRS doesn't equal project CRS)?

Is this confirmed? Why is it a pain? Can something be done for it?


With Sergey's new information, I was able to make it work for other CRS too.
The painful means that I sometimes still get Start point no on the road.
I'm not completely sure yet what causes it. Another problem is that it gets
very slow for city-wide (Vienna in my case) road networks. But that's
because it has to build the topology I guess.

Best wishes,
Anita
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Re: Re[2]: [Qgis-user] road graph plugin: no starting point?

2011-05-05 Thread Paolo Cavallini
Il giorno gio, 05/05/2011 alle 11.07 +0400, Sergey Yakushev ha scritto: 
 The fact that I am not GIS-specialist and not GIS-user. Road-graph plugin is 
 my hobby and it works for my data.

No need for excuses, thanks for your work.

 If you can prepare examples where the Road graph plugin bad then send them to 
 me. I'll try to fix it.

Anita, can you do that? I'm on a course, and I'll not be able to prepare
it before Monday, probably.

Thanks a lot.
-- 
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[Qgis-user] Re: [GRASS-user] OCR

2011-05-05 Thread ALT SHN
Thank you for your suggestions!

I'll begin to explore Ocrad (thanks for the tip Markus).

If I achieve relevant results will share them here.

best regards,

André

2011/5/5 Markus Neteler nete...@osgeo.org

 On Wed, May 4, 2011 at 11:18 AM, ALT SHN i.geograf...@alt-shn.org wrote:
  Hello,
 
  This might seem a Little off topic, but maybe someone here can help me.
 
  I need to extract toponomical data from old digitized paper maps. I wish
 to
  explore Optical character recognition (OCR).
 
  Does anyone has a suggestion/experience with this kind of challenge?

 You could try with this software:
 http://www.gnu.org/software/ocrad/ocrad.html

 Markus




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[Qgis-user] qgis-mapserver under windows

2011-05-05 Thread Saber
Hi all,

Has anyone managed to run qgis-mapserver under windows?

Will be great if you could update this page:

http://www.qgis.org/wiki/QGIS_mapserver_tutorial


Cheers
Saber


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[Qgis-user] Globally Unique Indentifier (GUID) in QGIS

2011-05-05 Thread Błażej Zamojski
Hi
Is there a way to add a GUID type data field in attribute table for a
shapefile?

Regards
Blazej Zamojski

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Re: [Qgis-user] qgis-mapserver under windows

2011-05-05 Thread Jürgen E . Fischer
Hi Saber,

On Thu, 05. May 2011 at 10:51:52 +0100, Saber wrote:
 Has anyone managed to run qgis-mapserver under windows?

Yes.  But I still need to package it - the svn/git/trac/redmine migration got
in the way...


Jürgen

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Re: [Qgis-user] Globally Unique Indentifier (GUID) in QGIS

2011-05-05 Thread Robert Szczepanek

Hi Blazej,

Fast but not true GUID solution:
- open attribute table
- start editing
- run 'field calculator' icon (kalkulator pól)
- GUID as name for new field
- $rownum in expressions area

You are welcome to polish forum [1], as your QGIS interface is probably 
in polish.


regards,
Robert

[1] http://forum.quantum-gis.pl/

W dniu 05.05.2011 11:26, Błażej Zamojski pisze:

Hi
Is there a way to add a GUID type data field in attribute table for a
shapefile?

Regards
Blazej Zamojski

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Re: [Qgis-user] qgis-mapserver under windows

2011-05-05 Thread Saber
Many thanks Jürgen

I got stuck with
Premature end of script headers: qgis_mapserv.fcgi.exe

Which I couldn't figure out why.

Cheers
Saber


 Hi Saber,

 On Thu, 05. May 2011 at 10:51:52 +0100, Saber wrote:
 Has anyone managed to run qgis-mapserver under windows?

 Yes.  But I still need to package it - the svn/git/trac/redmine migration
 got
 in the way...


 Jürgen

 --
 Jürgen E. Fischer norBIT GmbH   Tel.
 +49-4931-918175-20
 Dipl.-Inf. (FH)   Rheinstraße 13Fax.
 +49-4931-918175-50
 Software Engineer D-26506 Norden
 http://www.norbit.de

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Re: [Qgis-user] qgis-mapserver under windows

2011-05-05 Thread Jürgen E . Fischer
Hi Saber,

On Thu, 05. May 2011 at 11:56:43 +0100, Saber wrote:
 I got stuck with
 Premature end of script headers: qgis_mapserv.fcgi.exe

There's a fix in git that allows mapserv to run in mod_fcgid and passing a
proper PATH.  mod_fcgid is uploaded already.


Jürgen

-- 
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Dipl.-Inf. (FH)   Rheinstraße 13Fax. +49-4931-918175-50
Software Engineer D-26506 Norden   http://www.norbit.de

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Re: [Qgis-user] qgis-mapserver under windows

2011-05-05 Thread Saber
Thanks Jürgen
I will give the one from git a try.

Cheers
Saber


 Hi Saber,

 On Thu, 05. May 2011 at 11:56:43 +0100, Saber wrote:
 I got stuck with
 Premature end of script headers: qgis_mapserv.fcgi.exe

 There's a fix in git that allows mapserv to run in mod_fcgid and passing a
 proper PATH.  mod_fcgid is uploaded already.


 Jürgen

 --
 Jürgen E. Fischer norBIT GmbH   Tel.
 +49-4931-918175-20
 Dipl.-Inf. (FH)   Rheinstraße 13Fax.
 +49-4931-918175-50
 Software Engineer D-26506 Norden
 http://www.norbit.de

 --
 norBIT Gesellschaft fuer Unternehmensberatung und Informationssysteme mbH
 Rheinstrasse 13, 26506 Norden
 GF: Jelto Buurman, HR: Amtsgericht Emden, HRB 5502

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[Qgis-user] information

2011-05-05 Thread MONJARAZ
Good morning

I am new in qgis use and besides bad with the English language, I want to know 
if somebody can help me for knowledge like doing the analysis of flow of water 
as from an image of satellite.

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Re: [Qgis-user] information

2011-05-05 Thread Saber Razmjooei
Hi there

You can use GRASS within Quantum GIS.
GRASS has got several hydrological/hydraulic model flow routes through
Digital Terrain Model.

Here is a link to some of the simulation modules within GRASS:
http://grass.fbk.eu/intro/modelintegration.html

If you want detail simulation tool to calculate depth, velocity, hazard,
etc based on shallow water equations, you can use AnuGA:
http://datamining.anu.edu.au/


We wrote a plugin for mesh generation within QGIS, so that you can use
QGIS as pre-processing tool:
http://sourceforge.net/projects/anuga-gai/


Hope that helps
Saber


On Thu, 2011-05-05 at 13:01 -0500, MONJARAZ wrote:
 Good morning
  
 I am new in qgis use and besides bad with the English language, I want
 to know if somebody can help me for knowledge like doing the analysis
 of flow of water as from an image of satellite.
  
 Thanks
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[Qgis-user] Fwd: [Foss4g2011] FOSS4G program community voting now open!

2011-05-05 Thread Pirmin Kalberer
Hi all,
Please vote for your favorite talks for the coming FOSS4G in Denver.
Hint: There are a few QGIS abstracts...
The vote closes this Saturday.
Regards
Pirmin

--  Weitergeleitete Nachricht  --

Betreff: [Foss4g2011] FOSS4G program community voting now open!
Datum: Mittwoch, 27. April 2011, 05.30:59
Von: Peter Batty pe...@ebatty.com
An: foss4g2011 foss4g2...@lists.osgeo.org, OSGeo Discussions 
disc...@lists.osgeo.org

Hi everyone,

The community voting system is now open for FOSS4G 2011, at
http://community-review.foss4g.org/ . Please try to take some time to review
the abstracts and indicate your level of interest in each. The conference
committee will use the results of the vote to help choose which
presentations to accept, and to assign appropriately sized rooms based on
level of interest. Voting will be open this week and next, closing on May
8th.

Cheers,
Peter.

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Re[2]: [Qgis-user] road graph plugin: no starting point?

2011-05-05 Thread Sergey Yakushev


 I see. Now I understand better which values to set to make it work when it
 complains Can't find path.
 
 How do you fix Start point no on the road? Is it always because of CRS
 troubles (layer CRS doesn't equal project CRS)?

Only if 'on the fly transformation' disabled. But Road graph plugin hasother 
problem (Any people talk about it). I need example project anddata set to fix 
it.

 Is this confirmed? Why is it a pain? Can something be done for it?
 
 
 With Sergey's new information, I was able to make it work for other CRS too.
 The painful means that I sometimes still get Start point no on the road.
 I'm not completely sure yet what causes it. 

 Another problem is that it gets
 very slow for city-wide (Vienna in my case) road networks. But that's
 because it has to build the topology I guess.

Yes. 99.9% time it is build topology. I not use topology cache in this step. It 
can create poorly reproducible bugs.

 
 Best wishes,
 Anita
 
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RE: Re: [Qgis-user] Globally Unique Indentifier (GUID) in QGIS

2011-05-05 Thread Błażej Zamojski
Thanks,
not really GUID solution but useful. Maybe GUID should be implemented in the
future?

Regards
Blazej Zamojski

-Original Message-
From: Robert Szczepanek [mailto:rob...@szczepanek.pl] 
Sent: Thursday, May 05, 2011 12:44 PM
To: Błażej Zamojski
Cc: qgis-user@lists.osgeo.org
Subject: [SPAM] Re: [Qgis-user] Globally Unique Indentifier (GUID) in QGIS

Hi Blazej,

Fast but not true GUID solution:
- open attribute table
- start editing
- run 'field calculator' icon (kalkulator pól)
- GUID as name for new field
- $rownum in expressions area

You are welcome to polish forum [1], as your QGIS interface is probably 
in polish.

regards,
Robert

[1] http://forum.quantum-gis.pl/

W dniu 05.05.2011 11:26, Błażej Zamojski pisze:
 Hi
 Is there a way to add a GUID type data field in attribute table for a
 shapefile?

 Regards
 Blazej Zamojski

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 Qgis-user@lists.osgeo.org
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