On Mon, 19 Apr 2010, Dylan Beaudette wrote:
how about NULL ?
Dylan, NULL means unknown, and 'less than 1' or 'below detection limits' means it cannot be measured with the instruments used. There's a big difference. NULL can result from the measurement not being taken or the analysis not being conducted. Thanks, Rich _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
