Re: [OSGeo-Discuss] any spatial databases for high performance geo-computing
Hi Shuai, Everyone It's worth a look at a few projects @ LocationTech too. There's a nice community growing around these. GeoTrellis http://www.locationtech.org/projects/technology.geotrellis, Apache v2 License, Intro Article http://www.eclipse.org/community/eclipse_newsletter/2014/march/article4.php, Video http://youtu.be/aS8BAmu9daU, Discussion list https://www.locationtech.org/mailman/listinfo/geotrellis-dev GeoMesa http://www.locationtech.org/projects/technology.geomesa, Apache v2 License, Intro Article http://www.eclipse.org/community/eclipse_newsletter/2014/march/article3.php, Video http://youtu.be/JsQiOuGGWds, Discussion list https://www.locationtech.org/mailman/listinfo/geomesa-users GeoJinni http://www.locationtech.org/proposals/geojinni (formerly Spatial Hadoop), Video http://www.youtube.com/watch?v=A3Q2XlGvYcUfeature=share, discussion list coming soon Glad to help connect anyone who might be interested. Kind regards, Andrew On 19/05/14 18:04, Zhang, Shuai wrote: Hi All, sorry for asking, but what do you think is a good choice of spatial database for high performance geo-computing? In some high performance computing scenarios, data size tends to be huge, and a bunch of computer clusters work together with high throughput and tense computation. sometimes we use parallel filesystems like lustre, gfs, hdfs to handle specific problems but what if a spatial database? I explored some of postgresql cluster solutions, such as streaming replication, pgpool, slony and so on. I think most of them are designed for failover, and they might not be able to stand up with the huge data size and high performance demands. the case is quite alike in oracle and db2 spatial, i think. so any suggestions for projects aiming to build a distributed and parallel spatial database running on a cluster? Thanks, shuai ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] High level guidance/info requested
I have written healthcare software that merges medical records with GPS data. It is for use in developing countries, where Internet access is less than dependable. When the Internet is available, I send the medical data to the cloud, where I can map disease patterns and scan it for instances of contagious diseases. Usually in real-time. The software was designed to work off-line (and it does), but when off-line, right now, maps are not available to the application. Clearly I need to cache tiles for off-line use. There seem to be a number of options available. However, the world of mapping is new to me and my ignorance profound. The environment I am working in, is Apache, postgres, and PHP. But I only have an installer working for Windows. I've come across tilecache and mapserver. Are there other that I should look at? Any advice would be appreciated. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/High-level-guidance-info-requested-tp5141962.html Sent from the OSGeo Discuss mailing list archive at Nabble.com. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] Fwd: FOSS4G-Europe 2014 – Early Bird Registration extended to May 30
--- It’s been a busy few weeks as things start to come together for FOSS4G Europe 2014 – but now, admittedly with some delay, we have managed the challenge of compiling an exciting program, to be published over the next days. To give everyone time to have a look at the schedule before booking, we’ve extended the Early Bird registration deadline to May 30, 2014. In the meantime, many thanks to all who submitted abstracts – it has been a challenge to select the best of all excellent submissions passed in the last weeks. Altogether, the conference received about 78 abstracts in the general and 16 for the academic track. Every abstract has been carefully evaluated by the program committee to obtain a fair ranking. On the whole there has been a very satisfying presence of topics relating to the relevant Open-Source- tools like GeoServer, MapServer, Zoo, rasdaman, Grass, and several more. As well OGC-standards like WMS, WMS, WCS, WCPS, WPS, and SOS have the attention of the community. All in all the bandwidth of proposals shows a good representation of the general trends in the geospatial world. In addition the Local Organizing Committee has secured facilities to run additional workshops and a code sprint during the conference. A lot of registrations form Europe and beyond have poured in already, so make sure you are part of the crowd in this visionary European geo happening. Sign in now! http://www.foss4g-e.org/ --- Heike Hoenig Science Journalist; PR - Media - Communication --- ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] High level guidance/info requested
On 05/22/2014 09:20 AM, roghellman wrote: I have written healthcare software that merges medical records with GPS data. It is for use in developing countries, where Internet access is less than dependable. When the Internet is available, I send the medical data to the cloud, where I can map disease patterns and scan it for instances of contagious diseases. Usually in real-time. The software was designed to work off-line (and it does), but when off-line, right now, maps are not available to the application. Clearly I need to cache tiles for off-line use. There seem to be a number of options available. However, the world of mapping is new to me and my ignorance profound. The environment I am working in, is Apache, postgres, and PHP. But I only have an installer working for Windows. I've come across tilecache and mapserver. Are there other that I should look at? Any advice would be appreciated. Off-line mobile or desktop? Application or Browser based? A lot of people use a format called MBTiles to store offline caches of tiles locally. Generally with OpenStreetMap tiles this is quite an acceptable use. GDAL/OGR can read mbtiles along with other tools for use in an application you make. For Google maps they have very specific methods of caching locally using their api (might be mobile device only). Hope that gives you some direction to start looking. Thanks, Alex ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
