Discussion:
[Qgis-user] ECW on Ubuntu
Carlos Cerdán
2015-11-03 15:08:41 UTC
Permalink
Hi list:

What about ecw support for QGIS 2.12 on Ubuntu?

Looking for it I've found that it's not (yet) supported (
http://gis.stackexchange.com/questions/158724/is-it-possible-to-import-ecw-images-into-qgis-2-10-for-ubuntu
)

Any advice to get ecw reading on 2.12 on Ubuntu?

Carlos Cerdán
Richard Duivenvoorde
2015-11-04 09:54:15 UTC
Permalink
Post by Carlos Cerdán
What about ecw support for QGIS 2.12 on Ubuntu?
Looking for it I've found that it's not (yet) supported (
http://gis.stackexchange.com/questions/158724/is-it-possible-to-import-ecw-images-into-qgis-2-10-for-ubuntu
)
Any advice to get ecw reading on 2.12 on Ubuntu?
Hi Carlos,

you have to get hold of a GDAL library which has ecw support compiled in
it. The ecw lib is closed source and GDAL may not be made available as
binary with it. So compile yourself, and as soon as GDAL is able to read
ecw (only read is supported) then QGIS is able to read.

Some years ago I have been able to do this with the following link:

https://lists.osgeo.org/pipermail/qgis-user/2011-July/012724.html

(you have to google for the ecw libs though)
I have not yet been able to compile with newer ecw version.

Regards,

Richard Duivenvoorde
Carlos Cerdán
2015-11-04 15:43:50 UTC
Permalink
Thank you very much Richard.

After reading (and trying) your link, I've been looking for more recent
help. I found this:

[1] How to install QGis with ECW Support on Linux

As there isn't libgdal-ecw-src on last ubuntugis repository, when [1] says
"sudo apt-get install libgdal-ecw-src", I've tried install it following:

[2] libecw building for gdal

I'm not sure about [2]. Is it the way to install libecw compiling it?.
After that, It's supposed that libgdal-ecw-src is installed but I can't
find it in Synaptic.

After this, I've returned to [1], doing:

sudo gdal-ecw-build /usr/local/ecwjp2_sdk
gdalinfo --formats | grep -i ecw

On last step, I don't got any response, and QGIS can't still load ECW images

Some extra advice?

Regards

Carlos Cerdán

[1]
http://makina-corpus.com/blog/metier/2013/howto-install-qgis-with-ecw-support-on-linux

[2] https://gist.github.com/fritzvd/5867088
Post by Carlos Cerdán
Post by Carlos Cerdán
What about ecw support for QGIS 2.12 on Ubuntu?
Looking for it I've found that it's not (yet) supported (
http://gis.stackexchange.com/questions/158724/is-it-possible-to-import-ecw-images-into-qgis-2-10-for-ubuntu
Post by Carlos Cerdán
)
Any advice to get ecw reading on 2.12 on Ubuntu?
Hi Carlos,
you have to get hold of a GDAL library which has ecw support compiled in
it. The ecw lib is closed source and GDAL may not be made available as
binary with it. So compile yourself, and as soon as GDAL is able to read
ecw (only read is supported) then QGIS is able to read.
https://lists.osgeo.org/pipermail/qgis-user/2011-July/012724.html
(you have to google for the ecw libs though)
I have not yet been able to compile with newer ecw version.
Regards,
Richard Duivenvoorde
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Andre Joost
2015-11-04 19:21:07 UTC
Permalink
Post by Carlos Cerdán
Thank you very much Richard.
After reading (and trying) your link, I've been looking for more recent
[1] How to install QGis with ECW Support on Linux
As there isn't libgdal-ecw-src on last ubuntugis repository, when [1] says
[2] libecw building for gdal
If you are on Ubuntu 14.04, you can still try my advice here:

http://gis.stackexchange.com/questions/94870/unable-to-install-ecw-support-on-lubuntu-14-04

And yes, it is a kind of self-compiling.

HTH,
André Joost
Carlos Cerdán
2015-11-11 15:30:28 UTC
Permalink
Andre:

Thank you very much for your advice, but I had not success installing ECW
support for my QGIS 2.12 on Ubuntu 14.04. I was trying many advices, and
I've probably left a mess in my installation.... then, I've surrendered and
when I need to work with ECW images I turn on my virtual PC with Windows.

I hope that developers will can do easy to read ECW images on Linux in a
close future.

Carlos Cerdán
Post by Andre Joost
Post by Carlos Cerdán
Thank you very much Richard.
After reading (and trying) your link, I've been looking for more recent
[1] How to install QGis with ECW Support on Linux
As there isn't libgdal-ecw-src on last ubuntugis repository, when [1] says
[2] libecw building for gdal
http://gis.stackexchange.com/questions/94870/unable-to-install-ecw-support-on-lubuntu-14-04
And yes, it is a kind of self-compiling.
HTH,
André Joost
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Micha Silver
2015-11-11 20:20:57 UTC
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