Path: newssvr20.news.prodigy.com!newsmst01.news.prodigy.com!prodigy.com!newsfeed.cwix.com!news.maxwell.syr.edu!postnews1.google.com!not-for-mail From: ayeo@acm.org (Arthur Yeo) Newsgroups: comp.databases.theory Subject: Re: Special query type for Spatial DB Date: 27 Jan 2004 10:51:53 -0800 Organization: http://groups.google.com Lines: 10 Message-ID: References: <1103_1074129738@news.mw.cray.com> NNTP-Posting-Host: 136.162.67.251 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Trace: posting.google.com 1075229513 20542 127.0.0.1 (27 Jan 2004 18:51:53 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Tue, 27 Jan 2004 18:51:53 +0000 (UTC) Xref: newssvr20.news.prodigy.com comp.databases.theory:23702 "Mikito Harakiri" wrote in message news:... > Your question has many interpretation. What is the universe of discourse? Is The other issue is that the universe of discourse may be more ordered/evenly-spaced out than what we were talking about; e.g. honeycomb cells or nuclear-reactor uranium rods. So, I guess density map will not reveal much since they are all evenly spaced; unless, we use a different property to create the density map, such as free honeycomb cells (i.e. not occupied by eggs or larvae.)