From cholmes at openplans.org Wed Aug 9 12:48:11 2006 From: cholmes at openplans.org (Chris Holmes) Date: Wed, 09 Aug 2006 15:48:11 -0400 Subject: [tiling] FOSS4G BOF/sprint? Message-ID: <44DA3BFB.4020903@openplans.org> Hey all, I subscribed to this list a bit ago, as we're playing with some tiling stuff with squid. Sometime, perhaps soon, we may try to do KML 2.1 output, which basically lets you define tiles to stream back to clients. They're nice and let you define it any which way you choose, but I'd prefer to use a standard approach, so that potentially some of the requests (like KMZ ones that just return a 'ground overlay' (raster)) could be cached and used by others. To deal with streaming to Google Earth we're basically going to have to do caching. If others implement the same approach, and we get standard WMS plus a caching wrapper working well, then it may be easier to convince google to support WMS out of the box (or at least that's my hope). Anyways, I was thinking it might be nice to get a BOF at FOSS4g, or even a sprint to actually write some code, to come up with the standard and some nice example code. Would anyone be interested in such a thing? Does anyone know how to set up a BOF at Foss4g? best regards, Chris -- Chris Holmes The Open Planning Project http://topp.openplans.org -------------- next part -------------- A non-text attachment was scrubbed... Name: cholmes.vcf Type: text/x-vcard Size: 269 bytes Desc: not available Url : http://lists.eogeo.org/pipermail/tiling/attachments/20060809/0175b791/attachment.vcf From raj at rajsingh.org Wed Aug 9 22:00:58 2006 From: raj at rajsingh.org (Raj Singh) Date: Thu, 10 Aug 2006 01:00:58 -0400 Subject: [tiling] FOSS4G BOF/sprint? In-Reply-To: <44DA3BFB.4020903@openplans.org> Message-ID: On 8/9/06 3:48 PM, "Chris Holmes" wrote: > Would anyone be interested in such a thing? YES > Does anyone know how to set up a BOF at Foss4g? No --Raj From adoyle at eogeo.org Thu Aug 10 03:37:04 2006 From: adoyle at eogeo.org (Allan Doyle) Date: Thu, 10 Aug 2006 06:37:04 -0400 Subject: [tiling] FOSS4G BOF/sprint? In-Reply-To: References: Message-ID: On Aug 10, 2006, at 01:00, Raj Singh wrote: > On 8/9/06 3:48 PM, "Chris Holmes" wrote: >> Would anyone be interested in such a thing? > YES yes >> Does anyone know how to set up a BOF at Foss4g? > No maybe... I'll talk to the local organizers. Allan > > --Raj > > > _______________________________________________ > tiling mailing list > tiling at lists.eogeo.org > http://lists.eogeo.org/mailman/listinfo/tiling -- Allan Doyle +1.781.433.2695 adoyle at eogeo.org From schuyler at nocat.net Thu Aug 10 18:55:45 2006 From: schuyler at nocat.net (Schuyler Erle) Date: Thu, 10 Aug 2006 18:55:45 -0700 Subject: [tiling] FOSS4G BOF/sprint? In-Reply-To: References:

Message-ID: <20060811015545.GK26883@vishnu.tridity.org> * On 10-Aug-2006 at 3:37AM PDT, Allan Doyle said: > > > On 8/9/06 3:48 PM, "Chris Holmes" wrote: > >> Would anyone be interested in such a thing? > > YES > yes > >> Does anyone know how to set up a BOF at Foss4g? > > No > maybe... I'll talk to the local organizers. I already put in for a BOF on tiling. I haven't heard back but I assume it was accepted. SDE From steven.ottens at geodan.nl Thu Aug 17 08:55:23 2006 From: steven.ottens at geodan.nl (Steven M. Ottens) Date: Thu, 17 Aug 2006 17:55:23 +0200 Subject: [tiling] FOSS4G BOF/sprint? In-Reply-To: <44DA3BFB.4020903@openplans.org> References: <44DA3BFB.4020903@openplans.org> Message-ID: <44E4916B.4010406@geodan.nl> Hi all, I'd be interested in such a thing. I've written tiling support for mapbuilder as part of a performance boost of the edugis project. I will present the need for increased performance and the steps taken to get to there. By the lack of a standard I've looked at openlayers and ka-map and wrote something similar. It would be nice to get together compare the approaches and come up with a standard. Also if no real BOF/sprint can be organised we can maybe use my presentation as a starting point and continue in the pub or so. cheers, Steven Chris Holmes wrote: > Hey all, I subscribed to this list a bit ago, as we're playing with > some tiling stuff with squid. Sometime, perhaps soon, we may try to > do KML 2.1 output, which basically lets you define tiles to stream > back to clients. They're nice and let you define it any which way you > choose, but I'd prefer to use a standard approach, so that potentially > some of the requests (like KMZ ones that just return a 'ground > overlay' (raster)) could be cached and used by others. To deal with > streaming to Google Earth we're basically going to have to do > caching. If others implement the same approach, and we get standard > WMS plus a caching wrapper working well, then it may be easier to > convince google to support WMS out of the box (or at least that's my > hope). > > Anyways, I was thinking it might be nice to get a BOF at FOSS4g, or > even a sprint to actually write some code, to come up with the > standard and some nice example code. Would anyone be interested in > such a thing? Does anyone know how to set up a BOF at Foss4g? > > best regards, > > Chris > > > _______________________________________________ > tiling mailing list > tiling at lists.eogeo.org > http://lists.eogeo.org/mailman/listinfo/tiling > -- Geodan S&R Amsterdam ------------------------------------- Geodan S&R President Kennedylaan 1 1079 MB Amsterdam (NL) ------------------------------------- Tel: +31 (0)20 - 5711 311 Fax: +31 (0)20 - 5711 333 ------------------------------------- E-mail: steven.ottens at geodan.nl Website: www.geodan.nl Disclaimer: www.geodan.nl/disclaimer ------------------------------------- From raj at rajsingh.org Thu Aug 17 09:18:27 2006 From: raj at rajsingh.org (Raj Singh) Date: Thu, 17 Aug 2006 12:18:27 -0400 Subject: [tiling] FOSS4G BOF/sprint? In-Reply-To: <44E4916B.4010406@geodan.nl> Message-ID: Can we get a head start on this prior to FOSS4G? In previous conversations we've identified the need for a global tiling scheme and map scales as primary requirements. Would anyone like to propose such a scheme and/or scales? --Raj On 8/17/06 11:55 AM, "Steven M. Ottens" wrote: > Hi all, > > I'd be interested in such a thing. I've written tiling support for > mapbuilder as part of a performance boost of the edugis project. I will > present the need for increased performance and the steps taken to get to > there. By the lack of a standard I've looked at openlayers and ka-map > and wrote something similar. It would be nice to get together compare > the approaches and come up with a standard. > Also if no real BOF/sprint can be organised we can maybe use my > presentation as a starting point and continue in the pub or so. > > cheers, > Steven > > > Chris Holmes wrote: >> Hey all, I subscribed to this list a bit ago, as we're playing with >> some tiling stuff with squid. Sometime, perhaps soon, we may try to >> do KML 2.1 output, which basically lets you define tiles to stream >> back to clients. They're nice and let you define it any which way you >> choose, but I'd prefer to use a standard approach, so that potentially >> some of the requests (like KMZ ones that just return a 'ground >> overlay' (raster)) could be cached and used by others. To deal with >> streaming to Google Earth we're basically going to have to do >> caching. If others implement the same approach, and we get standard >> WMS plus a caching wrapper working well, then it may be easier to >> convince google to support WMS out of the box (or at least that's my >> hope). >> >> Anyways, I was thinking it might be nice to get a BOF at FOSS4g, or >> even a sprint to actually write some code, to come up with the >> standard and some nice example code. Would anyone be interested in >> such a thing? Does anyone know how to set up a BOF at Foss4g? >> >> best regards, >> >> Chris >> >> >> _______________________________________________ >> tiling mailing list >> tiling at lists.eogeo.org >> http://lists.eogeo.org/mailman/listinfo/tiling >> > From cholmes at openplans.org Sat Aug 19 17:34:44 2006 From: cholmes at openplans.org (Chris Holmes) Date: Sat, 19 Aug 2006 17:34:44 -0700 Subject: [tiling] [OSGeo-Discuss] FOSS4G & Tile WMS In-Reply-To: <44E49327.3040302@minst.net> References: <227046995E29D4118ADF00508B6092460554E018@apollo.nr.adi-limited.com> <44E18387.9020402@refractions.net> <44E49327.3040302@minst.net> Message-ID: <44E7AE24.3050105@openplans.org> Note that the list in question is at: http://lists.eogeo.org/mailman/listinfo/tiling It would be great if we could get openlayers, ka-map, mapbuilder and udig (and anyone else!) to all implement a common tiling scheme, and then serve it up from geoserver, mapserver and mapguide. Would be very cool if we could generalize ka-map's caching code to be generic for any WMS, able to crawl and cache a WMS, or to cache on the fly as clients request. We can use squid in front of geoserver or mapguide, but I think there are some nice advantages to a dedicated caching piece - a client could set it up to spare a server, and we could eventually link to WFS-T to expire the cache when there's been an update in a certain area. If we get a spec going I imagine we could pretty easily get it adopted by OGC, in the same manner as GeoRSS. We can certainly incubate at osgeo/eogeo. Chris Steven M. Ottens wrote: > Hi Jody, all > > I'm holding a technical session of 30min called 'Creating a high > performance webmapping site > ' > (nr 127) where I will discuss the implementation of tiling in the edugis > project, using mapbuilder, mapserver and apache's mod_cache. I hope this > will be a starting point for a WMS-C/tiling discussion. I don't know of > any other conferences about tiling, but I would be interested to visit them. > I hope to visit the ka-map workshop who also has tiling. But I can > imagine the ka-map people like to discuss ka-map and not wms-c/tiling. > Also a discussion around beers is a very good idea ;). > I haven't yet done a proper performance test with the new setup and I'm > not too hopeful that I can manage that before lausanne, but we'll see. > > Regards, > Steven > > ps. I accidently send the same mail from the wrong account, sorry if you > receive it twice > > Jody Garnett wrote: >> Shorter, Cameron wrote: >>> Jody, >>> With regards to tiling for the client, Steven Ottens is currently >>> incorporating tiling into Mapbuilder and has been coordinating to some >>> extent with OpenLayers and Kamap. They have an email list set up - >>> can't >>> remember what it is off the top of my head. >>> >> Indeed discussion about this email list, and the associated link was >> the motivation for the idea. Their >> wiki page seems to revole around questions not decisions. Justin >> wants an easy service to implement >> for his GeoServer presentation, and setting up a uDig rendering >> workflow to make use of it is dead >> easy. The interesting question is where to find the the description >> of the tile breakdowns so requests >> can be made in a manner that may be cached. >> >> So I would rather implement something; and then talk with code and a >> profiler, rather then wade through >> performance tradeoffs via email. If Mr. Ottens has made some >> decisions so much the better, if not we can >> make some and compare notes & performance. >> >> I did think it may be fun to have something to talk shop over at >> FOSS4G and Justin and I have managed to work >> with the other projects mentioned (yet). It would be interesting to >> see if building a standards in code is a good >> way to start things off. >> >> Cheers, >> Jody >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: discuss-unsubscribe at mail.osgeo.org >> For additional commands, e-mail: discuss-help at mail.osgeo.org >> > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: discuss-unsubscribe at mail.osgeo.org > For additional commands, e-mail: discuss-help at mail.osgeo.org > > > !DSPAM:1003,44e493d4170071429667743! > -- Chris Holmes The Open Planning Project http://topp.openplans.org -------------- next part -------------- A non-text attachment was scrubbed... Name: cholmes.vcf Type: text/x-vcard Size: 269 bytes Desc: not available Url : http://lists.eogeo.org/pipermail/tiling/attachments/20060819/4b5daaad/attachment.vcf