heavy .ige files created when exporting and archive, with impossibility to use the related .img file in QGIS about accessmod HOT 6 CLOSED

The .ige is the spill file, and this is expected. It should be readable in AccessMod, especially since issue #270 was resolved.
-> If I remember correctly, the .img file (HFA -- Erdas Imagine) was selected as it was the most compatible format among R, ArcGIS, QGIS, and GDAL, including partial support for color tables.
The fact that the zip file is small, but the uncompressed raster is large, is likely due to a high number of null values, which are easily compressible.

Can you explain briefly the problematic workflow ?

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After some new tests here are some results:

1. I re-created a landcover merge and exported it
2. the zip file contains: .txt, .ige and .img files
3. I can display the .img file in QGIS
4. trying to re-import the landcover merge into AccessMod (.img file), I get the following error:

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As indicated in #270, both .ige and .img files should be re-imported together, similar to how shapefile components .shp, .prj, and .dbf are handled.
This is the approach QGIS takes: it reads the .img file, which directs it to a list of "spill" files, typically .ige files, and loads them as a layer. QGIS can perform this task because it has access to the filesystem, but AccessMod (running in Docker) does not.

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Thank you. It worked better (the import was done, but I needed to modify the settings as the .ige file was larger than 2GB) but not yet sucessfully as I had the following message:

Additionnally, I am also facing the following issues when performing the accessibility analysis (for traveltime raster and cost allocation raster): even though I indicated a value of 0 for the maximum travel time, the output rasters seem only partially filled when exporting in QGIS (the cost allocation raster contains both .ige and .img files, while the traveltime only contain .img file)...not sure if it is an AccessMod issue or a data issue :
Travel time:

Cost allocation:

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Ok, multi file import issue reproduced + solved, available in 5.8.1-alpha.7.

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I tried again with AccessMod 5.8.1-alpha.7 and the multi file (.ige and .img) import worked fine this time. Only the issue of the strange accessibility raster remains, but I believe this is a separate issue linked to data and we can close this thread related to .ige file if you agree

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