I find the easiest way to install is to:-
1. Backup python Plugins(C:\OSGeo4W64\apps\qgis\python\plugins for
Python Plugins)
2. Delete the OSGEO4W folder
3. If you have other versions of the software installed via standalone
installers, uninstall all the Programs (QGIS,GRASS, SAGA etc)
4. Run a search for QGIS and delete any other folders (besides your
Backup...be careful)
5. If you don't have ccleaner or similar install it, click on Registry
(Left icon second from top), Scan for issues & then Fix selected
issues, repeat untill there are no issues.
6. Download most recent version of OSGEO4W installer (not standalone
QGIS installer see http://trac.osgeo.org/osgeo4w/ )
7. Do a standard Desktop instillation, It will install QGIS GRASS SAGA
and uDig, R should also be installed (Im open to correction)
8. When you have finished over wright the plugins folder with the backup.
9. Now you may have some issues initially, but redirecting is easy
enough, just direct everything to the corresponding OSGEO4W folder.
This is what I remember having to do with my last instillation, I cant
currently verify the above, as I don't have sufficient rights on my Work
PC at present.
Regards,
Richard.
On 14/07/2015 12:18, Bernd Vogelgesang wrote:
Hi,
maybe your paths are mixed up from all those different updates and
versions you installed.
From my experience, updating versions of QGIS rarely runs smoothly, so
I always make "tabula rasa".
Under Windows, I uninstall everything connected with QGIS
remove/rename the .qgis2 folder and delete all registry entries of
QGIS with regedit.
When reinstalling, I found the OSGEO4W-installer with advanced install
mode had the best results (but harder to understand).
If you want to go this way, be sure to write down all the plugins you
would like to have, save own scripts or model etc. to a safe place.
You might still have problems when your paths in the Windows
enviroment variables are twisted as well.
Just my 2cents. If other know better ways to solve those problems,
please comment.
Cheers
Bernd
Am 14.07.2015, 12:26 Uhr, schrieb Velizar Strumberger
<[email protected]>:
Hello to all
I am a great admirer of QGIS but I have a serious problem and I
hope that there is someone that can help me. I started working
with QGIS 2.2 (Valmiera) and it worked OK. I then (tried to)
switched to QGIS 2.4 but then GRASS, SAGA and R stopped working.
I have a laptop Windows 7 64 bit and a desktop Windows XP 32 bit.
The phenomenons are the same.
Installing it as a standalone or with OSGeo4W gave the same results.
These are the problems:
GDAL: OK it woks
For *GRASS 6 and 7*: Missing dependency. This algorithm cannot be
run :-(
This is for *SAGA and TauDEM* : Ooooops. The following output
layers could not be open
Channel Network C: /and a log path /...........................
The above file(s) cannot be opened, which probably indicates that
they were not correctly produced by the executed algorithm.
*For R*: Missing dependency. This algorithm cannot be run :-(
* Orfeo Toolbox*:
OTB folder not configured. Please configure before running OTB
algorithms.
(This also didn't work in QGIS 2.2 but I didn't bother with his).
In the Processing->Options->Providers the paths for
GRASS 6.4.3 was C:/OSGeo4W64/apps/grass/grass-6.4.3/etc/grass-run.bat
and for MSYS
C:/OSGeo4W64/apps/msys/msys.bat
This is wrong because I installed a standalone version and there
is no OSGeo4W64 folder.
I corrected the paths for both and pressed OK. I opened the
Providers once again and saw that the two path were converted to
the "original" ones that I "changed"; there is no way I can change
the paths set up during the installation
There is also a path for GRASS 7, but this was not installed.
I have the impression that parameters for the Providers is from
the previous installation through OSGeo4W - the previous installation.
I truly believe that I did not uninstall or delete a file (I also
think that the first time I did not uninstall but just deleted
QGIS) that determines such behavior because I also noticed the
following:
When I install QGIS (any version) and install some plugins (which
I would never use - as a test) and open the toolbox with several
providers and when I uninstall this version and install it once
again I find that the same plugins are installed and the toolbox
is opened exactly the same as I left it in the previous installation.
I am not a computer wiz but just a humble geologist who wants to
use software for my work.
Help - or explanation how to correct this would be most welcome.
Regards
Dr. Strumberger
--
Bernd Vogelgesang
Siedlerstraße 2
91083 Baiersdorf/Igelsdorf
Tel: 09133-825374
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