[Qgis-user] [QGIS-LIST] Contour plugin install under OSGEO4W - follow-up

[Benoit de Cabissole]

Lionel, list,

- 1 -
In fact the contour plugin has been made redundant by the inclusion of the
contour option from the Raster menu (gdal utils)!
Sorry for the noise...

- 2 -
Is it a bug (WinXP - QGIS 1.4 - OSGEO4W)?
   Contour menu from Raster menu.
   - select a raster (a tiff file)
   - select the output folder
   - select the contour interval (150 in my case)
   - select the field value: CONT
   - select to display the resulting shapefile in the QGIS canvas
   - click OK

-> all is fine, shapefile is created but it is not loaded.
   Module issues the following error:
ERROR 1: Can't load requested DLL:
C:\PROGRAMS\OSGeo4W\apps\gdal-16\bin\gdalplugins\gdal_ECW_JP2ECW.dll 126:
The specified module could not be found. ERROR 1: Can't load requested DLL:
C:\PROGRAMS\OSGeo4W\apps\gdal-16\bin\gdalplugins\gdal_ECW_JP2ECW.dll 126:
The specified module could not be found.

The dll exists at the requested location! So the error message is
misleading.
Tried to not select display the resulting shapefile in the QGIS canvas, same
result.

Here is what gdal is receiving:
gdal_contour -a CONT -i 150 C:/Interp/Rasters/Geophy/AS_G.tif
C:/Interp/Rasters/Geophy/contours

Can this behaviour be confirmed?

Benoit



> -----Original Message-----
> From: qgis-user-bounces at lists.osgeo.org
> [mailto:qgis-user-bounces at lists.osgeo.org]On Behalf Of Benoit de
> Cabissole
> Sent: Monday, 18 January 2010 13:41
> To: qgis-user at lists.osgeo.org
> Subject: RE: [Qgis-user] [QGIS-LIST] Contour plugin install under
> OSGEO4W
>
>
> Lionel,
>
> Thanks for the link.
> The simplest for me, not being proficient in python at all, is to go the
> GRASS route for now...
>
> Cheers,
> Benoit
>
>
> > -----Original Message-----
> > From: Lionel Roubeyrie [mailto:lroubeyrie at limair.asso.fr]
> > Sent: Monday, 18 January 2010 12:50
> > To: Benoit de Cabissole
> > Cc: qgis-user at lists.osgeo.org
> > Subject: Re: [Qgis-user] [QGIS-LIST] Contour plugin install under
> > OSGEO4W
> >
> >
> > Benoit,
> > I never used OSGEO4W, I only work on Linux workstations. Like says here
> > http://trac.osgeo.org/osgeo4w/wiki/pkg-python, you need to
> > install modules under
> > the osgeo4w python directory, then effectively the .exe file
> > provided by shapely
> > won't work, sorry for the mistake :( Maybe playing with ctypes
> > under the osgeo4w
> > installation, but I don't know how to...
> > With GRASS yes you have some contours possiblities.
> >
> > Le 18/01/2010 10:50, Benoit de Cabissole a écrit :
> > > Hi Lionel,
> > >
> > > Thanks for your reply.
> > >
> > >
> > >> Lionel Roubeyrie wrote:
> > >> Hi Benoit,
> > >> Have you tried to install shapely windows .exe from the pypi
> > repository?
> > >> http://pypi.python.org/pypi/Shapely
> > >
> > > Yes, I've tried. I had Python 2.5 installed as a standalone
> app with the
> > > shapely .exe installed in its tree. I've removed the standalone
> > python and
> > > all its modules and now the shapely .exe cannot install because
> > there is no
> > > trace of python in the Windows registry anymore! (The windows
> > installer for
> > > python modules seems to look up in the registry to locate the
> > path(s) of the
> > > installed python(s), but OSGEO4W does not show itself in the
> > registry and
> > > I've been unable to find any trick, while running shapely .exe,
> > to go pass
> > > the install screen where you have to select the python tree to
> > install to.)
> > > As I understand it, the OSGEO4W system is a UNIX-like
> > environment (e.g. à la
> > > 'msys') and I was thinking that a UNIX-like install is the only way to
> > > install python modules in OSGEO4W?!?
> > >
> > > Note that the contour plugin works fine with the standalone
> > versions of QGIS
> > > (1.4&  1.3) and the standalone version of python. It's only in
> > the OSGEO4W
> > > environment that the pluging fails to install because shapely is not
> > > packaged with OSGEO4W. Question is: can shapely be included in
> > the OSGEO4W
> > > system?
> > >
> > > Under OSGEO4W, the alternative would be to use GRASS plugin to do the
> > > contouring?
> > >
> > > Benoit
> > >
> > >
> > >>
> > >> Le 16/01/2010 11:47, Benoit Mweb a écrit :
> > >>> Hi List,
> > >>>
> > >>> I'm trying to install the Contour python plugin under QGIS 1.4 and
> > >>> OSGEO4W on WinXP machine. Problem is that the plugin requires
> > Shapely to
> > >>> be installed in python OSGEO4W. But I have no way to install
> > Shapely: it
> > >>> depends on CTypes that does not seem to be implemented in
> > Python OSGEO4W
> > >>> (when installing Shapely with "Python setup install" I've
> got an error
> > >>> saying CTypes is needed). And I cannot install CTypes
> because there is
> > >>> no compiler in the msys install.
> > >>>
> > >>> Does anybody know how to install the Contour plugin under
> > >> OSGEO4W? Thanks.
> > >>>
> > >>> Benoit
> > >>> WinXP - QGIS 1.4 - OSGEO4W