by orthogonal, I mean the contemptible Cartesian grid of lat/lon. as our sensor motes are mobile (as are some of our reader motes), we need to track their location.
the pyxis stuff looks interesting if complex. but these triangular meshs are so simple... I agree that a free, easy-to-use conversion app might be the first move to set new standards. - brian -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Greg Yetman Sent: Thursday, June 14, 2007 8:02 PM To: [email protected] Subject: Re: New coding schemes -was [Geowanking] Open Street View On 6/14/07, Mike Liebhold <[EMAIL PROTECTED]> wrote: FWIW: there are two other groups working with related codes: pyxis in australia has a scheme for spatial codes: see: http://www.pyxisinnovation.com/pyxwiki/index.php?title=How_PYXIS_Works I was going to chime in and mention Pyxis, you beat me to it. I will point out that Pyxis is in Canada (Ottawa) but hey, who can keep all of those Commonwealth countries straight anyway. The debate over lat/long vs. global discrete grids has been raging for a while; I don't think that much will change unless a killer software app comes along that makes life easier for global analysis. I can work around the problems with area calculations and the poles. I guess that advocates would point out that I have to work around these problems as the problem. On 6/14/07, brian grant <[EMAIL PROTECTED]> wrote: I want to capture everything as well but store data such that sensor location is defined by its area not an orthogonal point on a sphere - and that is the problem looking for a solution - for sensors, photos and lots of other attributes. One thing I don't get--why is an orthogonal area (I assume that you mean a polygon around a point, not a point with no extent) on a sphere a problem? For the small areas of influence that a sensor measures isn't the local topography and/or built environment much more important than any curvature in the earth's surface? Greg _______________________________________________ Geowanking mailing list [email protected] http://lists.burri.to/mailman/listinfo/geowanking
