Sponsor Frequently Asked HyMap Questions
Q: The ATREM vapor files don't have georeferencing info - I have to copy it
from the corresponding geo file. Can this be done at your end on the remaining CDs?
Q: My UNIX machine doesn't like the filenames on the CD - I have to read them on a PC then FTP to UNIX. On my CD writer, there was a flag that could be set to write in a format that's cross-platform compatible. Can you do this on the remaining CDs?
A: The default format for HyMap CDs is "Joliet", which is a PC format. We can provide data to UNIX users on 8mm tape on request. If you absolutely can not work with the CDs we send you and have to have the data on CD, please contact AIG directly to make alternate arrangements.
Q: Could you tell me what datum you used for the georef files (I am currently assuming WGS84)?
A: Though we required WGS84 for the aircraft navigation, the default output projection/datum for ENVI (that most commonly used on US maps) is UTM/NAD27 and that is what we used. the projection information is in the ENVI header of the _geo file. Once you've produced results and made the correction to the flightline data using the _glt file and the provided geocorrection function, the projection can be easily converted.
Additional Help or Information about the HyMap Groupshoot data contact:
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