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Have you though of just using the free GDAL tool? http://www.gdal.org/gdaldem.html It can run in windows using OSGEO4W and can ouput .img files. For Imagine 8 it goes something like... From Spatial Modeler: This model is found in the file <.IMAGINE_HOME.>/etc/models/Slope_percent.gmd. From Image Interpreter: Select Topographic Analysis... | Slope.... ...


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Answer for others so confused people as I am: To know how to deal with downloaded raw Landsat data - what else in pre-processing do I need? Firstly check their processing level in_MTL.txt file (included in downloaded Landsat image: http://landsat.usgs.gov/Landsat_Processing_Details.php) Processing level = DATA_TYPE L1T - terrain corrected processing. ...


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There is a new, 30 meters resolution SRTM DTM coming out. As stated on the NASA JPL official page, The next release is planned for later in 2014, and it is expected to include all of South America plus North America south of the United States. It is incomplete, for now, it has only limited coverage. You can read an article about SRTM coverages here ...


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GDAL's ENVI driver can be used to write headerless binary data files. The default data interleave is band sequential (BSQ), but BIP or BIL interleave options can be specified as a creation option. For example, to convert a GeoTIFF file foo.tif to a headerless file foo.bin: gdal_translate -of ENVI foo.tif foo.bin The ASCII file foo.bin.hdr will also be ...


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In terms of commercial software, FME can do this using PointCloudFilter transformer: The syntax required in the 'expression' input is unique to FME, but easy to learn. Here is a video demonstrating how to use PointCloudFilter expressions. In general, FME would probably not process point clouds as fast as a dedicated LiDAR software, but it could ...


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I just finished writing a script to accomplish this task using the free and open-source GIS Whitebox Geospatial Analysis Tools (download here), for which I am the lead developer. The source code of the script can be found here. Although the script is not yet part of the current official Whitebox release (v. 3.2.1) you can get an early version of it by ...



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