13:00:38 RRSAgent has joined #sdwcov 13:00:38 logging to http://www.w3.org/2016/05/04-sdwcov-irc 13:00:40 RRSAgent, make logs world 13:00:40 Zakim has joined #sdwcov 13:00:42 Zakim, this will be SDW 13:00:42 ok, trackbot 13:00:43 Meeting: Spatial Data on the Web Working Group Teleconference 13:00:43 Date: 04 May 2016 13:00:50 zakim, code? 13:00:50 I have been told this is SDW 13:01:49 Thanks phila 13:01:51 present+ ScottSimmons 13:02:01 present+ billroberts 13:02:02 present+ Maik 13:02:11 regrets+ jonblower 13:02:16 regrets+ eparsons 13:02:32 present+ Duo 13:02:42 zakim, this is https://mit.webex.com/mit/e.php?MTID=m9db0a515da84c0ca0de9ad69db3435bb 642 889 345, pw is sdw 13:02:42 got it, phila 13:02:51 zakim, save this description 13:02:51 this conference description has been saved, phila 13:02:55 zakim, code? 13:02:55 I have been told this is https://mit.webex.com/mit/e.php?MTID=m9db0a515da84c0ca0de9ad69db3435bb 642 889 345, pw is sdw 13:04:48 sam has joined #sdwcov 13:05:22 Kerry__ has joined #sdwcov 13:06:22 scribe: kerry 13:06:32 chair: billroberts 13:06:34 https://www.w3.org/2015/spatial/wiki/Meetings:Coverage-Telecon20160504 13:06:42 scribenick: kerry 13:06:55 https://www.w3.org/2016/04/20-sdwcov-minutes 13:07:10 proposed: approve minutes https://www.w3.org/2016/04/20-sdwcov-minutes 13:07:17 +1 13:07:20 +1 13:07:22 +1 13:07:28 +1 13:07:34 resolved: accept minutes https://www.w3.org/2016/04/20-sdwcov-minutes 13:07:41 https://www.w3.org/2015/spatial/wiki/Patent_Call 13:07:50 patent call 13:08:35 https://www.w3.org/2015/spatial/wiki/Coverage_Solution_Criteria 13:08:55 topic: brief recap of previous meeting 13:09:23 bill: billroberts discussed criteria and also updates wiki page 13:09:41 billroberts: also had presentation from ANU team 13:10:05 ... suggest w have update from ANU and Maik at Reading today, then plan what to do next 13:10:10 s/w/we/ 13:10:35 ... invite sam or Duo to speak 13:11:01 Duo: not much to say -- getting protoype working but not quite ready to show off 13:11:24 ...we have some data in a live application but not quite uasable or interactive yet -- will take another week or 2 13:11:52 billroberts: anything stood out as challenging or othereise of interest to us? 13:12:06 Duo: just getting things to run and work together 13:12:37 .... how to create sparql queries that are efficient enough for coverage data -- we have identified this as significant 13:13:13 billroberts: spaql on large data or woth complicated joins is more than an art than a science and can be implementation dependent 13:13:20 s/woth/with/ 13:13:32 ...some trial and erro for how to best write the query 13:13:39 s/erro/error/ 13:13:44 which sparql? 13:14:06 billroberts: duo: jena and fuseki 13:14:22 billroberts: jena list is very helpful 13:14:42 ... please let me know when you have something to show and we will schedule it 13:15:24 billroberts: how is coveragejson going? 13:15:42 maik:spoke at egu, got good feedback 13:16:05 .. completely different to what exists now -- at first confused by then positive 13:16:11 s/by/but/ 13:16:40 http://json-ld.org/playground/#startTab=tab-compacted&json-ld=https%3A%2F%2Fgist.githubusercontent.com%2Fneothemachine%2F6c7a337c82575efc08bbf43b234c9b01%2Fraw%2F6981d315eef329439696d3f802642b86b0ce56ba%2Fgrid-example.covjson&context=%7B%7D 13:16:42 maik: been looking at what exactly json-ld means for coveragejson 13:17:09 ... this is a coveragejson doc with json-ld context 13:17:19 ...some perople were asking about this 13:17:31 s/perope/people/ 13:18:01 ...also how to express quesantity types, fractions, etc, pls see our issues page and cookbook we are writing 13:18:11 RRSAgent, draft minutes 13:18:11 I have made the request to generate http://www.w3.org/2016/05/04-sdwcov-minutes.html phila 13:18:28 https://github.com/Reading-eScience-Centre/coveragejson/issues/63 13:18:35 RRSAgent, make logs public 13:18:39 present+ phila 13:18:41 RRSAgent, make logs public 13:18:51 RRSAgent, draft minutes 13:18:51 I have made the request to generate http://www.w3.org/2016/05/04-sdwcov-minutes.html phila 13:18:53 billroberts: rdf datacube has dealt with these questions too and might help here 13:19:15 Maik: here is what we are looking at for rgb bands. 13:19:17 present+ Kerry 13:19:25 regrets+ Jeremy 13:19:41 https://github.com/neothemachine/xndarray 13:19:44 ...am writing a javascript library for arrays called (missed it) 13:20:26 ... more lightweight than others for mutidimensional data, expecially for coveragejson multidimensional range objects 13:20:33 (library called xndarray) 13:20:34 ...will have coordinates some time 13:20:53 ...that's it... 13:21:29 billroberts: collaboration with beijing re CEO-ld -- have you heard anything? 13:22:03 Maik: they have implemented coveragejson from scratch with geotiff and landsat 13:22:24 ... see how to efficiently have an api for big amounts of statellite images 13:22:38 billroberts: uses a geotiff to ccoveragejson converter 13:23:06 billroberts: how do we take our scoping work and use it? 13:23:33 .... we should aim towards producing a spec 13:23:51 ...as well we also need a primer to esxplain what we are trying to achieve 13:24:31 s...can use these solution criteria 13:24:47 ...but need to go further on exploringdetails on what that would be 13:25:24 q+ 13:26:05 ...thinking to continue both tracks as at present and at some point we compare these solutions to criteria and make a proposed solution 13:26:23 ... also need to test alongside existing technology such as wcs 13:26:43 ... to demonstrate we have something to offer 13:27:13 q+ to answer Duo's question 13:27:17 ack k 13:27:59 ack me 13:27:59 phila, you wanted to answer Duo's question 13:28:56 phila: an implementation for a spec needs 2 independent implementations of every feature of the sepc, so it's a high bar! 13:29:07 ... needs to be as good as html or css... 13:29:37 ...if ANU does na REading does and they both implement everything, but we really would like a third too 13:29:51 .... and a common test suite is needed too, and exmaples 13:30:22 ... if we are going for something as solid as that then we need all this 13:30:52 billroberts: then we also need to be canvassing for people outside this meeting for implementations too 13:31:35 phila: If we say 'who wnats to do cool map overlays" etc we can get a huge amount of interest if we do this right 13:32:28 billroberts: amybe swrl too 13:32:54 phila: swrl as a commercial player is a plus -- working with the universities here 13:33:16 billroberts: we could do this if it works for our use cases 13:33:47 ....evidence of commercial application is extra power it seems 13:33:56 phila: yes. shows it has value 13:34:13 s/swrl/SWIRRL/g 13:34:39 billroberts: is a spec that works towards a rec plus a primer as a technical note ok? 13:34:50 phila: that is one way, but not the only way. 13:35:24 phila: matbe unlike ssn, the test suite may be important itself as supplmentary material 13:35:33 ... also whatever OGC needs 13:35:50 q? 13:36:12 billroberts: so... how do we get to that point/ 13:36:31 q+ 13:36:51 q+ 13:37:01 billroberts: will cjheck over which BPs need we need to take into account 13:37:21 ..we may need to move requiremnt to formal testable form 13:37:27 q+ 13:39:08 -> https://www.w3.org/TR/activitystreams-core/ Activity Streams 13:40:33 kerry: suggest looking at WCS too for an idea 13:40:34 q? 13:40:45 ack kerry 13:41:10 Duo: testing framework -- who would develop this suite? 13:41:31 Build the suite as you go, then rationalise into a doc 13:41:32 ... we'd like to strt building ad testing against this asap 13:41:47 q? 13:41:48 billroberts: agrees... we will need volunteers 13:41:53 ack Duo 13:42:17 ScottSimmons: we can use ogc teamengine for test development as it will need one for spec anyway 13:42:27 ack s 13:42:46 ...ogc does note require multiple implementations but the test suite is very important 13:43:18 ...this staurday there might be a decision that will affect the standard tier wrt reference implementations 13:43:27 billroberts: "abstract test suite" 13:43:47 ScottSimmons: set out in words that exaplins what a physical test suite would look lie 13:43:59 s/lie/like/ 13:44:23 [scott looks for an abstract test suite to share] 13:44:41 look at Annex A in http://docs.opengeospatial.org/is/14-100r2/14-100r2.html 13:45:28 billroberts: so we need our requirements formalised, a test suite, and in the meantime example implementations to carry on. then we can evaluate implementations against the requirements 13:45:56 ... implementations will also help us to understand appropriateness for requirements 13:45:59 q+ 13:46:11 ack k 13:48:17 phila: requirements are always important becuase they help you develop the test suite -- as an anchor-- but alsway leave out or cover up stuff 13:48:33 ...suc has huge assumptions 13:48:41 ...we have a good UCR 13:49:03 ..does not say "the Web has to exist' as it is assumed 13:49:20 ...but just doing what the requirements says can be silly 13:49:56 we have one verty advanced and one rapidly developing group, plus commercial interst, plus chinese group so we have time to work on this 13:50:32 ..if we can develop some of that test data too and get in place by (northern) summer break we'd be cooking with gas 13:50:58 ...i would be happy to say then that we are making progress, but if we get to september still messing around, im not so sure.. 13:51:39 billroberts: all good. 13:52:08 billroberts: will take first attempt at requirements 13:52:10 q+ 13:52:44 ack k 13:53:06 Kerry__: Don't forget that the WG's UCR already exists :-) http://www.w3.org/sdw-ucr/ 13:53:28 billroberts: any other questions? 13:53:30 s/sdw-ucr/TR\/sdw-ucr/ 13:53:51 Maik: how concrete or abstract would they be? 13:54:05 ... itsounds like they have to be abstract 13:54:25 billroberts: needs to be concrete while expressing what, not how 13:54:34 ...requirements doc, not design doc 13:54:52 ...not excessively prejudging the soluti0ons 13:55:07 ...will try writing something 13:55:32 RRSAgent, draft minutes 13:55:32 I have made the request to generate http://www.w3.org/2016/05/04-sdwcov-minutes.html phila 13:56:02 billroberts: close meeting 13:56:11 thanks kerry! 13:56:13 rrsagent, make logs public 13:56:17 thanks everyone 13:56:19 rrsagent, draft minutes 13:56:19 I have made the request to generate http://www.w3.org/2016/05/04-sdwcov-minutes.html Kerry__ 13:59:36 eparsons has joined #sdwcov 14:03:46 jtandy has joined #sdwcov