Hi
After reading QGIS user archive here and
https://gis.stackexchange.com/questions/124794/installing-qgis-with-ecw-support-on-mac
I see that this problem of reading ecw files in QGIS has some history.

My latest attempt was to reinstall GDAL_Framework-2.1.3-1 and
GDAL-ECW_Plugin-2.1.3-1
from here http://www.kyngchaos.com/software/frameworks#gdal_complete
and I added the library "libNCSEcw.dylib" to GDAL 2.1 Libraries folder from
ERDAS ECW/JPEG2000 SDK 5.4 rather than 5.3
I figured that the library file probably didn't change between 5.3 and 5.4
versions.

I even restarted my Mac OS X 10.11.6
restarted QGIS 2.18
opened a new project and tried to load my raster file in .ecw format
ERROR: Unsupported Data Source: /Users/s432198/Dropbox/Mudgee veg/abc1.ecw
is not a supported raster data source

This should work so I must be doing something wrong?

Dave

On Mon, Mar 12, 2018 at 3:37 PM, Dave Pepper <pepd...@gmail.com> wrote:

> Hi All
>
> update - I've made progress
>
> tip: go to bottom right corner of this support home page,
> https://support.hexagonsafetyinfrastructure.com/infocenter/index?page=home
> to see this:
> Hexagon Geospatial
>
>    - Product Download Portal <http://download.hexagon.com/>
>
> click the link to get to this page,
> https://download.hexagongeospatial.com/
>
> search for ERDAS ECW JPEG2000 SDK
> fill in the form of details
> download the zip folder
>
> Then follow the Readme file with the GDAL ECW Plugin from
> http://www.kyngchaos.com/software/archive
>
> So I did all that, now how do I load this external (?) plugin and use it
> to open a file?
>
> Dave
> PS thanks Luke...as you can see above I eventually got there
>
>
>
>
> On Mon, Mar 12, 2018 at 12:11 PM, Dave Pepper <pepd...@gmail.com> wrote:
>
>> Hi
>>
>> I've ploughed through the archives and read up to minute information to
>> 2016 on ECW.
>>
>> I reinstalled QGIS with all requirements from http://www.kyngchaos.com/
>> software/qgis
>>
>> I installed ECW Plugin 2.1.1-2 from http://www.kyngchaos.com/
>> software/archive...
>> then went looking for ERDAS ECW/JPEG2000 SDK at
>> http://download.intergraph.com/download-portal but that site has
>> changed...and I explored there but could not find the SDK. Maybe things
>> have progressed since 2016-9-29 the date on the GDAL ECW Plugin ReadMe.
>>
>> So I wonder where can I now find the the libNCSEcw.dylib file to copy to
>> the
>>    /Library/Application Support/GDAL/2.1/Libraries  ?
>>
>> Or is there another work around so that I can open eww files in QGIS 2.18
>> on Mac OS X 10.11.6 ?
>>
>> Thanks for any tips
>>
>> Dave
>>
>>
>
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