Hi Patrick, Interesting. It seems like there is a precedent already in the Local Lucene and Local SOLR packages that define "CartesianTier" as lingua franca.
Like I said in an earlier email it depends on who you talk to regarding the preference of what to call these Tiles/Grids/Tiers, etc., and that seems to be further evidenced by your research. I for one don¹t really have a preference but precedent matters to me and if Tiers have been used to date then there should be strong consideration to use that nomenclature and +1 from me. Cheers, Chris On 12/28/09 9:25 PM, "patrick o'leary" <pj...@pjaol.com> wrote: > So trying no to drag this out, the most frequent generic term used in GIS > software is SRID > http://en.wikipedia.org/wiki/SRID > > Again this provides just a basic nomenclature for the high level element, > somewhat the blackbird of objects rather than the defining the magpie (sorry > for the CS 101 reference) > > But it should show that every implementation is unique in some format. > Perhaps as unique as CartesianTier's ( sorry Ted ! ) > > > > On Mon, Dec 28, 2009 at 5:26 PM, patrick o'leary <pj...@pjaol.com> wrote: > >> Hmm, depends, tiles indicate to me a direct correlation between the id and >> a map tile, which will depend upon using the right projection >> with the cartesian plotter >> >> >> On Mon, Dec 28, 2009 at 2:56 PM, Grant Ingersoll <gsing...@apache.org>wrote: >> >>> >>> On Dec 28, 2009, at 4:19 PM, patrick o'leary wrote: >>> >>>> Hmm, but when you say grid, to me that's just a bunch of regularly >>> spaced >>>> lines.. >>> >>> Yeah, I hear you. I chose spatial tiles for the Solr patch, but spatial >>> grid would work too. Or map tiles/map grids. That anchors it into the >>> spatial world, since we're calling Lucene's spatial contrib/spatial and >>> Solr's Solr Spatial. >>> >>>> >>>> On Mon, Dec 28, 2009 at 1:16 PM, Grant Ingersoll <gsing...@apache.org >>>> wrote: >>>> >>>>> >>>>> On Dec 28, 2009, at 3:51 PM, patrick o'leary wrote: >>>>> >>>>>> So Grant here's the deal behind the name. >>>>>> Cartesian because it's a simple x.y coordinate system >>>>>> Tier because there are multiple tiers, levels of resolution. >>>>>> >>>>>> If you look at it closer: >>>>>> - To programmers there's a quadtree implementation >>>>>> - To web users who use maps these are grids / tiles. >>>>>> - To GIS experts this is a form of multi-resolution raster-ing. >>>>>> - To astrophysicists these are tiers. >>>>>> - To the MS folks I've talked to they have quad something or other. >>>>>> - To math folks Cartesian levels makes sense. >>>>>> >>>>>> Can't make all the people happy all the time, >>>>> >>>>> Right, but as far as I can tell (and I've only done, say an hour of >>>>> research), I can't find anyone who calls them Cartesian Tiers other >>> than us. >>>>> >>>>> Personally, I think web users are the largest group (after all, aren't >>> we >>>>> all web users?) out there and therefore will be the most familiar with >>>>> either grid or tile. FWIW, I have tentatively called the Solr >>> FieldType to >>>>> support this "SpatialTileField" as in it represents a tile in the >>> spatial >>>>> sense. I'd be fine with SpatialGridField as well (GridField seems a >>> bit too >>>>> generic). >>> >>> >>> >> > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Chris Mattmann, Ph.D. Senior Computer Scientist NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA Office: 171-266B, Mailstop: 171-246 Email: chris.mattm...@jpl.nasa.gov WWW: http://sunset.usc.edu/~mattmann/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Adjunct Assistant Professor, Computer Science Department University of Southern California, Los Angeles, CA 90089 USA ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
