From general-return-1906-apmail-lucene-general-archive=lucene.apache.org@lucene.apache.org Mon Dec 28 21:19:52 2009 Return-Path: Delivered-To: apmail-lucene-general-archive@www.apache.org Received: (qmail 25525 invoked from network); 28 Dec 2009 21:19:51 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 28 Dec 2009 21:19:51 -0000 Received: (qmail 82897 invoked by uid 500); 28 Dec 2009 21:19:51 -0000 Delivered-To: apmail-lucene-general-archive@lucene.apache.org Received: (qmail 82821 invoked by uid 500); 28 Dec 2009 21:19:51 -0000 Mailing-List: contact general-help@lucene.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: general@lucene.apache.org Delivered-To: mailing list general@lucene.apache.org Received: (qmail 82807 invoked by uid 99); 28 Dec 2009 21:19:51 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 28 Dec 2009 21:19:51 +0000 X-ASF-Spam-Status: No, hits=2.2 required=10.0 tests=HTML_MESSAGE X-Spam-Check-By: apache.org Received-SPF: unknown (nike.apache.org: error in processing during lookup of pjaol@pjaol.com) Received: from [209.85.223.195] (HELO mail-iw0-f195.google.com) (209.85.223.195) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 28 Dec 2009 21:19:42 +0000 Received: by iwn33 with SMTP id 33so207957iwn.29 for ; Mon, 28 Dec 2009 13:19:21 -0800 (PST) MIME-Version: 1.0 Received: by 10.231.168.10 with SMTP id s10mr1313531iby.49.1262035161605; Mon, 28 Dec 2009 13:19:21 -0800 (PST) In-Reply-To: <8528E547-3E7A-4B44-A18E-55923ECC10C7@apache.org> References: <1e33aedb0912281251r62dcda60p342a95865152838f@mail.gmail.com> <8528E547-3E7A-4B44-A18E-55923ECC10C7@apache.org> Date: Mon, 28 Dec 2009 13:19:21 -0800 Message-ID: <1e33aedb0912281319o5634a8f7n90934ee56891a7ae@mail.gmail.com> Subject: Re: [spatial] Cartesian "Tiers" nomenclature From: "patrick o'leary" To: general@lucene.apache.org Content-Type: multipart/alternative; boundary=001636c9351d80657e047bd075ad X-Virus-Checked: Checked by ClamAV on apache.org --001636c9351d80657e047bd075ad Content-Type: text/plain; charset=ISO-8859-1 Hmm, but when you say grid, to me that's just a bunch of regularly spaced lines.. On Mon, Dec 28, 2009 at 1:16 PM, Grant Ingersoll 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). --001636c9351d80657e047bd075ad--