Hello Brian Couple of questions. How are you converting/planning to convert between wgs84 lat long and Fuller's projection? What gps are you currently/thinking about using?
On 7/4/08, Brian Grant <[EMAIL PROTECTED]> wrote: > as a pragmatic exercise allow me to start with a map and end with a > database schema. > > begin with a Fuller projection > (http://en.wikipedia.org/wiki/Fuller_projection) an icosahedral > framework of 20 triangular areas (actually tetrahedra to the center - > but we'll leave that out for now). Each triangular area is designated a > Major Triad. > > Each Major Triad is subdivided ** by the same base as the original > sphere ** into 400 Minor Triads (20^2). If the edge of a Major Triad is > 8,000 km the edges of the Minor Triads are 400 km. Major Triads are > designated with characters A through T; Minor Triads are designated AA > through TT. > > Minor Triads are further subdivided into Trixels (or whatever) again by > the same base creating a recursive triangular mesh capable of defining > unique triangular regions 2.5 m on edge with 13 characters. > > Forgive me as it may be apparent by now that I'm not a geographer. I'm > an application engineer that builds wireless sensor networks and needs a > place to store data based on sensor location - sometimes static - > sometimes mobile. I've got networks in the US, Pacific islands, India > and Europe. This Recursive Triangular Mesh is what I'm using to do it. > > The database schema is nothing more than a wiki with a directory > structure that looks like "D/FH/KP/ET/SA/RO" - addressing a unique area > of less than 3 square meters directly converted from a Lat/Long point. > > My other concern is the precision and accuracy of the location measuring > instrument - how many digits does my GPS provide? It defines the size of > the final Trixel. > > - Brian > > > > > > > _______________________________________________ > Geowanking mailing list > [email protected] > http://lists.burri.to/mailman/listinfo/geowanking > -- Sent from Google Mail for mobile | mobile.google.com Will King +44 (0) 77950 96645 _______________________________________________ Geowanking mailing list [email protected] http://lists.burri.to/mailman/listinfo/geowanking
