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I want to open a "Raster Dataset" in QGIS. In ArcMAP I can just add it like shown in the Screenshot (only the raster shows up).

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If I am trying to do this in QGIS. However there I don't see the raster files itself. I find three files (.ovr, .aux, and .ovr.aux.xml) and a folder (with .adf files inside it). How can I open the raster? enter image description here

A similar question was already asked here and here, but never really answered.

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ustroetz
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  • .adf is vector (E$RI coverage)? http://gis.stackexchange.com/questions/22067/how-can-i-load-adf-files-to-quantum-gis – Mapperz Oct 10 '13 at 21:01
  • In the ArcCatalog these three files are just shown as one "File System Raster" – ustroetz Oct 10 '13 at 21:06
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    Are you sure the raster data you are hoping to use is a raster? If you are using an ESRI grid, or TIN, they are not gdal supported rasters, so they will never show as available raster formats in QGIS. – Ryan Garnett Oct 10 '13 at 21:16
  • Yes I am fairly sure. Because I can also use them as raster directly in GDAL and that works (by just setting the path to it). – ustroetz Oct 10 '13 at 21:20
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    I agree with Ryan as far as i know .ovr files are simply external pyramid files (http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009t00000026000000.htm). They are not the raster layer source – Curlew Oct 10 '13 at 21:30
  • You guys are right. .ovr are the pyramids of the raster. Meanwhile I found that .adf files are the raster files. The problem was also discussed here: http://gis.stackexchange.com/questions/22067/how-can-i-load-adf-files-to-quantum-gis – ustroetz Oct 10 '13 at 21:43
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    @Mapperz *.adf can be either raster (ESRI grid) or vector (ESRI coverage). – user2856 Oct 11 '13 at 00:46
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    @RyanGarnett - ESRI grids are definitely supported by GDAL - http://www.gdal.org/frmt_various.html#AIG. – user2856 Oct 11 '13 at 00:48

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"In QGIS you can simply open the file w001001.adf using the normal ‘add raster layer’ dialogue. You may have to change the symbology in the raster layer properties (double click on the just imported layer in the Layers panel), try e.g., the pseudocolor Color map." - found here

ustroetz
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