[gdal-dev] ERROR 1: Does not appear to be a USGS DEM file

[Fernando Aristizabal - NOAA Affiliate]

GDAL does not seem to recognize some FEMA generated Lidar datasets that are
presented in USGS DEM (.dem) file formats. The files open fine in ArcGIS.

Running:
$ gdalinfo fema06-140cm_2995441b.dem
ERROR 1: Does not appear to be a USGS DEM file
gdalinfo failed - unable to open 'fema06-140cm_2995441b.dem'.

The files can be viewed at:
https://data.tnris.org/collection/8ea19b45-7a66-4e95-9833-f9e89611d106

but a direct download link for one of the archives (~20MB) is:
https://s3.amazonaws.com/data.tnris.org/8ea19b45-7a66-4e95-9833-f9e89611d106/resources/fema06-140cm-coastal_2995441_dem.zip

Opening the ASCII files doesn't seem to reveal anything very far off but
maybe the headers are off a bit.

Thanks for the help


-- 
Best,

Fernando Aristizabal
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