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FlightGear Newsletter January 2012: Difference between revisions
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FlightGear Newsletter January 2012 (view source)
Revision as of 20:15, 22 January 2012
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Thanks to the great folks at GRASS GIS, most notably Markus M., the procedure of cleaning large vector datasets like [[CORINE]] is now a matter | Thanks to the great folks at GRASS GIS, most notably Markus M., the procedure of cleaning large vector datasets like [[CORINE]] is now a matter | ||
of just a few days and runs on a machine with far less than 32 GByte of main | of just a few days and runs on a machine with far less than 32 GByte of main memory! One year ago, cleaning CORINE took about one and a half | ||
months to complete just one single (!) of multiple iterations and you never knew if somebody would reboot the server while the job was still running (which actually happened several times). | months to complete just one single (!) of multiple iterations and you never knew if somebody would reboot the server while the job was still running (which actually happened several times). | ||
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# As soon as the various tools are working in a predictable manner, the driving motivation behind all the effort can be revived, which is to build an infrastructure for re-compiling the respective terrain tiles on a regular, maybe daily schedule after the land cover has been updated in a certain region. | # As soon as the various tools are working in a predictable manner, the driving motivation behind all the effort can be revived, which is to build an infrastructure for re-compiling the respective terrain tiles on a regular, maybe daily schedule after the land cover has been updated in a certain region. | ||
A clean CLC2006 is provided as well, but because that one's still incomplete (and work in progress, actually) CLC2000 is considered more important. CLC2006 | A clean CLC2006 is provided as well, but because that one's still incomplete (and work in progress, actually) CLC2000 is considered more important. CLC2006 focused mainly on the identification and mapping of land cover changes between 2000 and 2006.<ref>[http://sia.eionet.europa.eu/CLC2006 Corine Land Cover 2006, Eionet]</ref> All land cover changes bigger than 5 ha have been mapped. CLC2006 is significantly more up to date in some areas, as can be seen in the image on the right. | ||
=== TerraGear GUI updates === | === TerraGear GUI updates === | ||