FYI, interesting paper about void filling in SRTM datasets:
Filling SRTM Voids: The Delta Surface Fill Method (Adobe PDF 1.5Mb)
Greg Grohman, George Kroenung, and John Strebeck
availabe at: http://www.asprs.org/publications/pers/2006journal/march/
Cheers
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Carlos Henrique Grohmann - Guano
Geologist M.Sc - Doctorate Student at IGc-USP - Brazil
Linux User #89721 - carlos dot grohmann at gmail dot com
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“Good morning, doctors. I have taken the liberty of removing Windows 95 from my hard drive.”
–The winning entry in a “What were HAL’s first words” contest judged by 2001: A SPACE ODYSSEY creator Arthur C. Clarke