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For my project I need to bring ECW and eww files into QGIS (3.10 Coruna). The aerial pictures of the ECW files give no problems and are well georeferenced. However, I cannot open the EWW raster files in QGIS, which indicate which areas of the ecw files are treated. The error I get is: "Invalid Layer: GDAL provider Cannot open GDAL dataset C". Is there something I can do to fix this or another program I can use? I just need to see which parts are treated, no further processing or calculations will be required. I tried ERDAS ER mapper and IAR EW for arm, but the first one didn't work because of issues with a license and the latter gave problems as well.

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    I would assume the EWW files are the world files for ECW files. If so they would only be a few kb in size and you could open them in notepad or other text editor and see georeferencing coordinates and related into.
    – John
    Commented Jul 27, 2021 at 17:01

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  1. Reinstall QGIS with the OSGeo4W installer.
  2. Select Advanced Install

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  1. Click next until you get to package selection.
  2. Expand Libs and enable gdal-ecw

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  1. Continue to approve the licences, note that it only enables reading ECW, not writing.
  2. Finish the install and open your files in QGIS.
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