I noticed that capability within JTS. I have been thinking about parallel arrays keeping the information. For each coordinate within the linestring, there's an associated time at which the entity was at that coordinate. I can store all the times in an attribute in a SimpleFeature of type List<Date>. This is inline with how KML deals with tracks in the extension namespace. However, I don't think geotools serializes a SimpleFeature to KML in a way that uses the extension namespace. Is there a way to plug in to the serialization mechanism that can generate KML Tracks or MultiTracks?
On Fri, Oct 24, 2014 at 9:41 PM, Jody Garnett <jody.garn...@gmail.com> wrote: > You can create custom Coordinate implementations, and coordinate sequence > implementations that allow the use of metadata for each location in your > track. > > Out of the box JTS Coordiante does x,y,z - you can see we have a few > implementations that focus on representing only xy as a coordinate sequence > backed by an array. You can actually go the other direction and create a > Coordinate that maintains additional "measures" (although this is not very > common). JTS will politely leave that information alone, but can cary it > around it the data structure for you. > > You can see a few functions for linear referencing, you would want to > create a similar approach for accessing your metadata. > > Perhaps try asking on the JTS list for additional tips and tricks? > -- > Jody Garnett > > On October 17, 2014 at 6:01:37 AM, Anthony F (afc...@gmail.com) wrote: > > Hi all, > > I have been digging around in geotools looking to see if it supports > tracks and have so far come up empty handed. I'm looking for advice and > best practices on how to work with tracks. Basically, I want to store a > LineString so that I can do proper geospatial queries on the geometry. > Each point in the LineString has meta-data associated with it. I've > thought about storing parallel arrays of the attributes associated with > each way point. I have found the kml extension namespace which supports > Tracks and MultiTracks but I don't know how to work with it within > geotools. I have also found dynamicFeatures within the GML namespace but > I'm not sure how that gets parsed by geotools. If anyone has any code > samples they can point me to, I'd appreciate it. > > Thanks, > Anthony > ------------------------------------------------------------------------------ > > Comprehensive Server Monitoring with Site24x7. > Monitor 10 servers for $9/Month. > Get alerted through email, SMS, voice calls or mobile push notifications. > Take corrective actions from your mobile device. > http://p.sf.net/sfu/Zoho_______________________________________________ > GeoTools-GT2-Users mailing list > GeoTools-GT2-Users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users > >
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