Re: [Qgis-user] Landsat scene as GeoTIFF

2012-03-01 Thread Zirneklitis

There is no such a menu  entry neither under Layer nor somewhere else :(

(Using QGIS 1.7.4 / 1.9.90)

K.

ronczyk levente wrote:
> Layer > Add  RGB Composation / select the bands and that's all
> ..
>
> 2012/3/2 Zirneklitis mailto:e...@lanet.lv>>
> ..
> I have a Landsat scene as seperate GeoTiff files for each band. Is
> possible to load them in QuantumGIS as a single layer? I want to
> use three band colour to display them.
> ..
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[Qgis-user] Landsat scene as GeoTIFF

2012-03-01 Thread Zirneklitis

Hi,

I have a Landsat scene as seperate GeoTiff files for each band. Is 
possible to load them in QuantumGIS as a single layer? I want to use 
three band colour to display them.


Than You,
Karlis
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Re: [Qgis-user] Re: New to QGIS, Best solution?

2012-03-01 Thread Alister Hood
OK, since you asked ;)

> Date: Thu, 01 Mar 2012 15:31:38 +0200
> From: "Derek Hohls" 
> Subject: Re: [Qgis-user] Re: New to QGIS, Best solution?
> To: , 
> Cc: qgis-user@lists.osgeo.org
> Message-ID: <4f4f965a02d400024...@pta-emo.csir.co.za>
> Content-Type: text/plain; charset=US-ASCII
>
> I found their conclusion somewhat disappointing.  
>
>
> Arc/GIS was launched in 1999, and Arc/INFO (command line predecessor, 
> equivalent to GRASS) in 1982.  GRASS also launched in 1982 and ILWIS launched 
> in 1984, so how they can say these are "relatively young" does not make sense.

I think the key word there is "generally".  I don't think they mean to say that 
GRASS and ILWIS are young - if you've read the whole paper you'll have seen 
them mentioning the "maturity and long existence" of GRASS and ILWIS.

> Also to keep in mind that the code-base that many of these "younger" packages 
> build on is much older than their launch dates...

Really?  Which ones?  How much older?
The truth is, most of them _are_ a lot younger.  Incidentally, this means that 
papers like this can go out of date very quickly - think how much QGIS has 
improved since it was written.

> I think the "less overall GIS functionality" is due to the smaller user base 
> and number of contributers, and has nothing to do with age per se.

And to put on Paulo's hat: due to having less $money$ spent on development.  I 
don't have a clue how much less, but I'd guess several orders of magnitude at 
least.  Please support QGIS development... ;)

The main problems I have with the conclusion are:
1) I can't see that the paper actually provides a case for the statement that 
FOS software generally has less functionality than "proprietary high-end GIS".
2) They don't define "high-end".  There are all sorts of references in the rest 
of the paper e.g. to "Mapinfo", which imply they just mean any mainstream 
proprietary GIS.  But I suspect that is not what they mean: Mapinfo for example 
is pretty pathetic without a bunch of additional paid add-ons.  Which 
combinations of proprietary software and addons are required for "high-end" 
functionality?

> My 2c!  But I would really like to hear from others on this topic.
>
> >>>  03/01/12 2:09 PM >>>
> The paper can be accessed directly with no subscription here:
> http://www.geo.uzh.ch/~sstein/manuscripts/sstein_freegitools_ecoinf2009.pdf
>
> An interesting read. Highlights from the Conclusion:
>
> "We report that due to the relative youth of  the eight evaluated FOS GIS 
> projects, they generally tend to have less overall GIS functionality than 
> proprietary high-end GIS...  However, on the positive side they all 
> provide the basic GIS functions needed in LSE[Landscape Ecology]; they are 
> easy to  customise; a growing number of specialised functions and plug-ins 
> already exists for specific LSE applications; and there is a growing 
> community of practitioners willing to freely share their ideas, code and 
> expertise."

Alister
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Re: [Qgis-user] WFS access causes QGIS to crash

2012-03-01 Thread Giovanni Manghi
Hi,

> but one service that I need is causing QGIS to crash (abruptly and without 
> any warning).


can you post the wfs server that is causing the issue?

cheers

-- Giovanni --

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Re: [Qgis-user] Projecting a Vector layer into another CRS

2012-03-01 Thread Micha Silver

  
  
On 01/03/2012 14:09, arunthe...@gmail.com wrote:
  
Hello,


I have worked with  ArcGIS before as a part of my course.
  In ArcGIS we used to carry out Projection of vector layer in
  WGS 84 to Polyconic projection with a custom central meridian
  using the Project Tool from the ArcToolbox. And that is saved
  as a seperate feature in the mdb.


I have been trying to redo all my ArcGIS experiments in
  QGIS to test the functionality. But I couldn't find out how to
  do this re-projection. I am using Spatialite in place of the
  mdb. So It would be better if the resultant is also within the
  spatialite DB. But the CRS of the entire DB has been preset as
  WGS 84 during creation. So, how can this be done? 
  



In QGIS you use the "Save As..."  option (right click on the
  layer in the TOC) then choose a different CRS. You can save the
  new, reprojected, layer as a shapefile, or several other formats.
But if you're using spatialite, why not reproject right in the
  database, using the ST_Transform() function?
I'd create a new table, duplicating the columns from the original
  (except the Geometry- that you do with AddGeometryColumn(). Then:
SELECT AddGeometryColumn(
    'new_table', 'Geometry', ,,'XY');
INSERT INTO new_table (column1, column2,..., Geometry)
    SELECT column1, column2,...,ST_Transform(Geometry, ) 
    FROM old_table;


HTH,
Micha


  -- 
Regards
Arunmozhi
Twitter: @tecoholic
Website: http://arunmozhi.in
IRC Nick: teco


This mail was received via Mail-SeCure System.



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Re: [Qgis-user] Re: New to QGIS, Best solution?

2012-03-01 Thread Micha Silver

  
  
On 01/03/2012 15:31, Derek Hohls wrote:

  I found their conclusion somewhat disappointing.  


Arc/GIS was launched in 1999, and Arc/INFO (command line predecessor, equivalent to GRASS) in 1982.  GRASS also launched in 1982 and ILWIS launched in 1984, so how they can say these are "relatively young" does not make sense.  Also to keep in mind that the code-base that many of these "younger" packages build on is much older than their launch dates...  I think the "less overall GIS functionality" is due to the smaller user base and number of contributers, and has nothing to do with age per se.



The report was published in 2009, probably written a year earlier.
That's 4 years ago = a very long time for fast moving projects like
QGIS. The current version certainly fills in all the gaps that were
reported as "less overall functionality" back then. 
Considering that Arc* has 25+ years of development behind it, it's
astounding how far QGIS has come in ± 7 years. 


  

My 2c!  But I would really like to hear from others on this topic.


  

  
 03/01/12 2:09 PM >>>

  

  
  The paper can be accessed directly with no subscription here:
http://www.geo.uzh.ch/~sstein/manuscripts/sstein_freegitools_ecoinf2009.pdf

An interesting read. Highlights from the Conclusion:

"We report that due to the relative youth of  the eight evaluated FOS GIS 
projects, they generally tend to have less overall GIS functionality than 
proprietary high-end GIS...  However, on the positive side they all 
provide the basic GIS functions needed in LSE[Landscape Ecology]; they are 
easy to  customise; a growing number of specialised functions and plug-ins 
already exists for specific LSE applications; and there is a growing 
community of practitioners willing to freely share their ideas, code and 
expertise."




From:   Howard Y 
To: qgis-user@lists.osgeo.org
Date:   28/02/2012 14:51
Subject:[Qgis-user] Re: New to QGIS, Best solution?
Sent by:qgis-user-boun...@lists.osgeo.org



David,

Tables 2 and 3 of the following paper have some very nice comparisons of
various open source software and ArcGIS 9.3.

Steiniger, Stefan, and Geoffrey J. Hay, Free and open source geographic
information tools for landscape ecology, Ecological Informatics, Volume 4,
Issue 4, September 2009, Pages 183-195.

If you can't access their paper, contact the authors and they will send 
you
a PDF of the paper.

--
View this message in context: 
http://osgeo-org.1560.n6.nabble.com/New-to-QGIS-Best-solution-tp4498936p4522509.html

Sent from the Quantum GIS - User mailing list archive at Nabble.com.
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[Qgis-user] 3D Vector data representation in QGIS

2012-03-01 Thread Saqib Kazmi

Hi can any one tell me how can i visualize 3D data in QGIS???   
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Re: [Qgis-user] openlayers layers without properties is it possible to alter brightness/contrast

2012-03-01 Thread Goyo
El día 27 de febrero de 2012 18:15, M.E.Dodd  escribió:
> Is it possible to change the display of e.g. openstreetmap background layer,
> I would like to plot data over this but its rather aggressive in the
> background so I would like to grey it down.

You want to read this blog post:
http://underdark.wordpress.com/2012/02/25/light-styles-for-osm-layers-in-qgis/

Via QGIS planet, which I recommend every QGIS user to check often.
http://planet.qgis.org/planet/

Goyo
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[Qgis-user] Road Graph extension doesn't work anymore in 1.7.4

2012-03-01 Thread Barbara Philippot
Hi list,

I'm on Ubuntu 11.1 and I've just made a "apt-get update" this morning so
QGIS was upgraded from 1.7.3 to 1.7.4. (repository: ubuntugis-unstable).
Road graph doesn't work anymore since the update : there is no error
message when I launch it but the extension window doesn't display properly,
I just see the help button on the extension title (see attachment). It
worked well when I was in 1.7.3.

Has anyone the same problem?


Regards,

Barbara PHILIPPOT
Observatoire Régional des Urgences PACA
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Re: [Qgis-user] Re: New to QGIS, Best solution?

2012-03-01 Thread Derek Hohls
I found their conclusion somewhat disappointing.  


Arc/GIS was launched in 1999, and Arc/INFO (command line predecessor, 
equivalent to GRASS) in 1982.  GRASS also launched in 1982 and ILWIS launched 
in 1984, so how they can say these are "relatively young" does not make sense.  
Also to keep in mind that the code-base that many of these "younger" packages 
build on is much older than their launch dates...  I think the "less overall 
GIS functionality" is due to the smaller user base and number of contributers, 
and has nothing to do with age per se.


My 2c!  But I would really like to hear from others on this topic.

>>>  03/01/12 2:09 PM >>>
The paper can be accessed directly with no subscription here:
http://www.geo.uzh.ch/~sstein/manuscripts/sstein_freegitools_ecoinf2009.pdf

An interesting read. Highlights from the Conclusion:

"We report that due to the relative youth of  the eight evaluated FOS GIS 
projects, they generally tend to have less overall GIS functionality than 
proprietary high-end GIS...  However, on the positive side they all 
provide the basic GIS functions needed in LSE[Landscape Ecology]; they are 
easy to  customise; a growing number of specialised functions and plug-ins 
already exists for specific LSE applications; and there is a growing 
community of practitioners willing to freely share their ideas, code and 
expertise."




From:   Howard Y 
To: qgis-user@lists.osgeo.org
Date:   28/02/2012 14:51
Subject:[Qgis-user] Re: New to QGIS, Best solution?
Sent by:qgis-user-boun...@lists.osgeo.org



David,

Tables 2 and 3 of the following paper have some very nice comparisons of
various open source software and ArcGIS 9.3.

Steiniger, Stefan, and Geoffrey J. Hay, Free and open source geographic
information tools for landscape ecology, Ecological Informatics, Volume 4,
Issue 4, September 2009, Pages 183-195.

If you can't access their paper, contact the authors and they will send 
you
a PDF of the paper.

--
View this message in context: 
http://osgeo-org.1560.n6.nabble.com/New-to-QGIS-Best-solution-tp4498936p4522509.html

Sent from the Quantum GIS - User mailing list archive at Nabble.com.
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[Qgis-user] Projecting a Vector layer into another CRS

2012-03-01 Thread arunthe...@gmail.com
Hello,

I have worked with  ArcGIS before as a part of my course. In ArcGIS we used
to carry out Projection of vector layer in WGS 84 to Polyconic projection
with a custom central meridian using the Project Tool from the ArcToolbox.
And that is saved as a seperate feature in the mdb.

I have been trying to redo all my ArcGIS experiments in QGIS to test the
functionality. But I couldn't find out how to do this re-projection. I am
using Spatialite in place of the mdb. So It would be better if the
resultant is also within the spatialite DB. But the CRS of the entire DB
has been preset as WGS 84 during creation. So, how can this be done?

-- 
Regards
Arunmozhi
Twitter: @tecoholic
Website: http://arunmozhi.in
IRC Nick: teco
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Re: [Qgis-user] Re: New to QGIS, Best solution?

2012-03-01 Thread jonathanmoules
The paper can be accessed directly with no subscription here:
http://www.geo.uzh.ch/~sstein/manuscripts/sstein_freegitools_ecoinf2009.pdf

An interesting read. Highlights from the Conclusion:

"We report that due to the relative youth of  the eight evaluated FOS GIS 
projects, they generally tend to have less overall GIS functionality than 
proprietary high-end GIS...  However, on the positive side they all 
provide the basic GIS functions needed in LSE[Landscape Ecology]; they are 
easy to  customise; a growing number of specialised functions and plug-ins 
already exists for specific LSE applications; and there is a growing 
community of practitioners willing to freely share their ideas, code and 
expertise."




From:   Howard Y 
To: qgis-user@lists.osgeo.org
Date:   28/02/2012 14:51
Subject:[Qgis-user] Re: New to QGIS, Best solution?
Sent by:qgis-user-boun...@lists.osgeo.org



David,

Tables 2 and 3 of the following paper have some very nice comparisons of
various open source software and ArcGIS 9.3.

Steiniger, Stefan, and Geoffrey J. Hay, Free and open source geographic
information tools for landscape ecology, Ecological Informatics, Volume 4,
Issue 4, September 2009, Pages 183-195.

If you can't access their paper, contact the authors and they will send 
you
a PDF of the paper.

--
View this message in context: 
http://osgeo-org.1560.n6.nabble.com/New-to-QGIS-Best-solution-tp4498936p4522509.html

Sent from the Quantum GIS - User mailing list archive at Nabble.com.
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RE: [Qgis-user] georeferencing

2012-03-01 Thread M . E . Dodd
Some more details.  
1. I have large 60mb .tiff (generated eventually from yesterdays .dxf file that 
I was trying to geocode and have given up for moment but will return to).  The 
.tiff has transparency.

2.  using:
QGIS version 1.9.90-Alpha QGIS code revision 9a9ab73 Compiled against Qt 4.7.1 
Running against Qt 4.7.1 GDAL/OGR Version 1.8.1 GEOS Version 3.2.2 PostgreSQL 
Client Version 8.3.10 SpatiaLite Version 2.4.0 QWT Version 5.2.1
On windowsxp

3. used the georeferencer.  Identified points on the image and gave them the 
epsg:900913 x and y coordinates.  Actually I gps'd the 9 reference locations 
with survey grade gps and converted these data to the google reference system 
using http://twcc.free.fr/ which seemed to give reasonable results although not 
able to check accuracy other than plotting on google background.

4. chose transformation type: polynomial 1, resampling: nearest neighbour, no 
compression and target srs epsg900913 and load into qgis automatically.

5. the mean transformation error was 2.08 pixels which I think is pretty 
reasonable as I am not trying for extreme accuracy in this case.

6. then looking at the map with openstreetmap background the control points 
automatically appeared (I did not add them as a separate layer), they were in 
the correct place. But the map itself was shown about 19km further north than 
it should have been, I could measure exactly how far north and if its only the 
northing that is wrong.


-Original Message-
From: Andreas Neumann [mailto:a.neum...@carto.net] 
Sent: 01 March 2012 10:06
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] georeferencing

 Hi,

 QGIS can reproject rasters on the fly. I believe from Version 1.7x on -  
definitely with the trunk version.

 However, if you use Google maps or Openstreetmap through the OpenLayers  
plugin you fixed to their projection.

 Reprojecting your own data to their projection should still work  though.

 If it doesn't, please provide more details - it may be a bug then.

 Andreas

 On Thu, 1 Mar 2012 09:53:50 +, M.E.Dodd wrote:
> I want to show a detailed map of buildings and vegetation over a 
> background image e.g. openstreetmap or google etc. Don't think qgis 
> can do on the fly transformation of rasters at moment so assume I have 
> to geocode the detailed map using epsg:900913 so it can be shown with 
> openstreetmap. Converted a set of fixed point locations from original 
> map into google's x and y then did the geocoding in qgis and plotted 
> over openstreetmap. The individual points then came out in the correct 
> place but the map itself was shown about 19km too far north. If I'd 
> had made a mistake in the x,y coordinates or the coordinate system 
> then the points should not be in the correct place so I am a bit 
> mystified as to what has happened and how to go about fixing it.
> The map I am trying to georeference is a .tiff with transparency 
> hoping that this would allow the details to show over the background, 
> however the 'transparent' part is showing up black at the moment so 
> some adjustment here needed too.
>
>  --
>  The Open University is incorporated by Royal Charter (RC 000391), an 
> exempt charity in England & Wales and a charity registered in Scotland 
> (SC 038302).

--
 --
 Andreas Neumann
 Böschacherstrasse 10A
 8624 Grüt (Gossau ZH)
 Switzerland
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Re: [Qgis-user] georeferencing

2012-03-01 Thread Andreas Neumann

Hi,

QGIS can reproject rasters on the fly. I believe from Version 1.7x on - 
definitely with the trunk version.


However, if you use Google maps or Openstreetmap through the OpenLayers 
plugin you fixed to their projection.


Reprojecting your own data to their projection should still work 
though.


If it doesn't, please provide more details - it may be a bug then.

Andreas

On Thu, 1 Mar 2012 09:53:50 +, M.E.Dodd wrote:

I want to show a detailed map of buildings and vegetation over a
background image e.g. openstreetmap or google etc. Don't think qgis
can do on the fly transformation of rasters at moment so assume I 
have

to geocode the detailed map using epsg:900913 so it can be shown with
openstreetmap. Converted a set of fixed point locations from original
map into google's x and y then did the geocoding in qgis and plotted
over openstreetmap. The individual points then came out in the 
correct

place but the map itself was shown about 19km too far north. If I'd
had made a mistake in the x,y coordinates or the coordinate system
then the points should not be in the correct place so I am a bit
mystified as to what has happened and how to go about fixing it.
The map I am trying to georeference is a .tiff with transparency
hoping that this would allow the details to show over the background,
however the 'transparent' part is showing up black at the moment so
some adjustment here needed too.

 --
 The Open University is incorporated by Royal Charter (RC 000391), an
exempt charity in England & Wales and a charity registered in 
Scotland

(SC 038302).


--
--
Andreas Neumann
Böschacherstrasse 10A
8624 Grüt (Gossau ZH)
Switzerland
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[Qgis-user] georeferencing

2012-03-01 Thread M . E . Dodd
I want to show a detailed map of buildings and vegetation over a background 
image e.g. openstreetmap or google etc. Don't think qgis can do on the fly 
transformation of rasters at moment so assume I have to geocode the detailed 
map using epsg:900913 so it can be shown with openstreetmap.  Converted a set 
of fixed point locations from original map into google's x and y then did the 
geocoding in qgis and plotted over openstreetmap.  The individual points then 
came out in the correct place but the map itself was shown about 19km too far 
north.  If I'd had made a mistake in the x,y coordinates or the coordinate 
system then the points should not be in the correct place so I am a bit 
mystified as to what has happened and how to go about fixing it.
The map I am trying to georeference is a .tiff with transparency hoping that 
this would allow the details to show over the background, however the 
'transparent' part is showing up black at the moment so some adjustment here 
needed too.


-- 
The Open University is incorporated by Royal Charter (RC 000391), an exempt 
charity in England & Wales and a charity registered in Scotland (SC 038302).
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[Qgis-user] QGIS on Android - Getting rid of the Android status bar

2012-03-01 Thread Andreas Neumann

Hi Marco,

Do you have any idea how I can get QGIS on Android full-screen without 
the Android Statusbar on the top? My problem is that some dialogues 
(e.g. the layers properties dialogues) are still cut off at the bottom 
and I cannot reach the OK/Cancel buttons - which means that I have to 
force-quit QGIS.


The situation is improving constantly, but still there are some 
dialogues with such problems. If I had the extra space from the top 
Android status bar I think I'd have a chance to reach those OK/cancel 
buttons ...


Thanks if you have any idea.

Andreas

--
--
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Böschacherstrasse 10A
8624 Grüt (Gossau ZH)
Switzerland
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Re: [Qgis-user] Android qgis alpha7 with pinch zooming

2012-03-01 Thread Andreas Neumann

Hi Marco,

This is cool - I can confirm that it works.

I am not entirely sure it always zooms to where I expected though. 
Sometimes it does not center where I wanted to zoom to. The center of 
the new extent rendered after the pinch zoom is different from the 
center where I actually pinch-zoomed. Might this be a dpi-issue?


This is on my Samsung Galaxy Note GT7000 phone.

Thanks if you have an idea why there is this difference.

Andreas



On Thu, 01 Mar 2012 03:31:47 +0100, Marco Bernasocchi wrote:

Hi all, just to let you know that I implemented pinch zooming, fixed
some minor stuff and created alpha7. all details here:


http://www.bernawebdesign.ch/byteblog/2012/03/01/qgis-for-android-gets-pinch-zooming/

http://www.bernawebdesign.ch/byteblog/2012/03/01/qgis-for-android-alpha-7/

ciao


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[Qgis-user] Actions HowTo

2012-03-01 Thread Paolo Cavallini
Hi all.
We are writing a short howto for the new actions. We would like to add some more
complex example that the usual "open the browser with this argument", possibly 
using
coordinates and functions. Ideas and suggestions welcome.
All the best, and thanks.
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Paolo Cavallini - Faunalia
www.faunalia.eu
Full contact details at www.faunalia.eu/pc
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Re: [Qgis-user] WFS access causes QGIS to crash

2012-03-01 Thread Derek Hohls
Thanks Ramon


I tried that but, again, no information was displayed, the program
simply closed.


Derek

>>> Ramon Andiñach 03/01/12 10:10 AM >>>
In theory, if you run QGIS from the command line it should print debug
information to the terminal. 

-ramon.

On 01/03/2012, at 14:55, "Derek Hohls"  wrote:

> Hi
> 
> I am experiencing a strange problem.  I can access a number of WFS
services without any issues e.g.  http://ogi.state.ok.us/geoserver/wfs
but one service that I need is causing QGIS to crash (abruptly and
without any warning).  Other colleagues have no problems accessing the
same service.  Is there any way to see what it is that is causing the
error on my machine?
> 
> Thanks
> Derek
> 
> 
> (Running QGIS 1.7.1 under Ubuntu 10.10)
> 
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Re: [Qgis-user] WFS access causes QGIS to crash

2012-03-01 Thread Ramon Andiñach
In theory, if you run QGIS from the command line it should print debug 
information to the terminal. 

-ramon.

On 01/03/2012, at 14:55, "Derek Hohls"  wrote:

> Hi
> 
> I am experiencing a strange problem.  I can access a number of WFS services 
> without any issues e.g.  http://ogi.state.ok.us/geoserver/wfs but one service 
> that I need is causing QGIS to crash (abruptly and without any warning).  
> Other colleagues have no problems accessing the same service.  Is there any 
> way to see what it is that is causing the error on my machine?
> 
> Thanks
> Derek
> 
> 
> (Running QGIS 1.7.1 under Ubuntu 10.10)
> 
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