IRC log of sdwbp on 2016-05-18

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logging to http://www.w3.org/2016/05/18-sdwbp-irc
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RRSAgent, make logs world
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Zakim, this will be SDW
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ok, trackbot
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Meeting: Spatial Data on the Web Working Group Teleconference
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Date: 18 May 2016
14:01:59 [phila]
present+ phila
14:02:13 [phila]
present+ BartvanLeeuwen, ByronCinNZ, ClausStadler, Linda
14:02:21 [ByronCinNZ]
present+ ByronCinNZ
14:03:02 [ClausStadler]
present+ ClausStadler
14:04:16 [phila]
regrets+ Jeremy, Payam, Scott, Clemens, Josh, Kerry, Bill, Ed, Matt
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scribe: phila
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scribeNick: phila
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present+ Nicky
14:05:22 [phila]
chair: Linda
14:05:48 [phila]
agenda: https://www.w3.org/2015/spatial/wiki/Meetings:BP-Telecon20160518
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14:06:44 [Linda]
ByronCinNZ, Nicky, can you join the webex?
14:07:15 [phila]
-> www.w3.org/TR/2016/WD-dwbp-20160519/ DWBP 'Last Call'
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14:10:25 [phila]
PRPOPSED: Accept last week's minutes https://www.w3.org/2016/05/04-sdwbp-minutes
14:10:34 [phila]
PROPOSED: Accept last week's minutes https://www.w3.org/2016/05/04-sdwbp-minutes
14:10:40 [phila]
+1
14:10:42 [Linda]
+1
14:10:56 [ClausStadler]
+0 (unfortunately missed it because i confused the time)
14:11:00 [BartvanLeeuwen]
+0 not there
14:11:23 [phila]
RESOLUTION: Accept last week's minutes https://www.w3.org/2016/05/04-sdwbp-minutes
14:11:34 [AndreaPerego]
present+ AndreaPerego
14:11:39 [Linda]
https://www.w3.org/2015/spatial/wiki/Patent_Call
14:11:41 [phila]
-> https://www.w3.org/2015/spatial/wiki/Patent_Call Patent Call
14:12:22 [phila]
Topic: Progress of BP Narrative
14:12:41 [phila]
Linda: Lots of regrets for this week
14:13:18 [phila]
... AS I think we know, we're working on a narrative to use as the main structure of the doc. Narrative is about a flood event and the emergency response to it
14:14:00 [phila]
-> https://www.w3.org/2015/spatial/wiki/BP_Narrative_2 Narrative
14:14:23 [phila]
Linda: Jeremy divided the narrative into 9 sub items and assigned an owner to each section.
14:15:27 [phila]
Linda: First item is listed without an owner in the agenda but Jon Blower & co at Reading Uni are going to cover that for us.
14:15:42 [BartvanLeeuwen]
q+
14:15:57 [phila]
Linda: Have you had a chance to look at it, Bart?
14:15:58 [phila]
ack b
14:16:21 [phila]
BartvanLeeuwen: A quick remark - I wasn't on the call when this was mentioned before is about terminology.
14:16:29 [phila]
... I have problem with the work inundentation
14:16:37 [phila]
phila: (it just means flood)
14:17:17 [phila]
Linda: It should be clear from the last minutes that we decided that we wanted to make it clearer. Avoid too specific terminology. It just hasn't been done yet.
14:17:48 [phila]
BartvanLeeuwen: OK, I remember we had the discussion
14:18:04 [phila]
phila: It's not an exact synonym, but it's probably OK
14:18:08 [phila]
Linda: OK, let's say flood.
14:18:37 [phila]
BartvanLeeuwen: Nicky is here to help take weight off my back but we're both in a project for the Dutch Fire Department and the Road and water authority
14:18:48 [phila]
... Talking about exchanging data on flooding
14:19:03 [phila]
... ALl the stuff that is in this narrative is what we talk about with them.
14:19:27 [phila]
... As ever, a lot of discussion with them is so far mostly about process but that's always the case.
14:19:43 [phila]
... We're hoping for more discussion about what is happening in the wild. We certainly mentioned this WG
14:20:23 [phila]
Topic: Item 3 Publish flood inundation forecast data as vector dataset and identify the administrative areas (?) that each inundation area is predicted to impact
14:20:48 [phila]
Linda: This is where a Web developer decides to use some data. He will convert a coverage to a feature dataset
14:20:59 [phila]
... That sounds like a lot to ask of a Web developer
14:21:09 [phila]
... and then publish this data as a set of features with persistent URIs etc.
14:21:21 [phila]
... Identify the admin areas that touch the flooded areas.
14:21:39 [phila]
... I decided to try and provide some content for this part of the narrative but I can't provide everything that Jeremy wrwote.
14:21:57 [phila]
... I have the Geonovum testbed where interesting stuff has been going on.
14:22:26 [phila]
Linda: What I said was that those flooded areas are new features and the developer will need to mint their own IDs
14:22:52 [phila]
... Next step is relate each flooded area to an admin area. He'll do this offline with a GIS tool.
14:23:11 [phila]
... Not interesting here to talk about how that's done. But he creates links from the flooded areas to admin.
14:23:19 [phila]
... I gavce a JSOn example of that.
14:23:40 [phila]
Linda: There are more parts of the task that Jeremy descibes that I don't have any content for.
14:23:45 [phila]
RRSAgent, draft minutes
14:23:45 [RRSAgent]
I have made the request to generate http://www.w3.org/2016/05/18-sdwbp-minutes.html phila
14:24:03 [phila]
Linda: Need to think about data compactness and performance
14:24:23 [phila]
... Again had some Geonovum test bed info I could use. Algorithms for reducing hte number of points in a geomoetry.
14:24:47 [phila]
Linda: Last thing to do is to include provenance data so we know which ervsion of the dataset was used.
14:24:58 [phila]
... Dunno about that so I didn't provide that info for the narrative.
14:25:16 [phila]
... I tell you this as an example of how you can provide content for one of those narrative items.
14:25:44 [phila]
... It doesn't mean that an owner has to know everything. Just put in what you can and work with others to complete it. That's the part I have left to do.
14:25:50 [phila]
... But I already have some examples in there.
14:26:01 [phila]
phila: How long did it take?
14:26:05 [phila]
Linda: About 2 hours
14:26:36 [phila]
Linda: if we get more content like this in the other narrative items then that's going to help.
14:26:40 [BartvanLeeuwen]
q+
14:26:59 [phila]
... What we need most is examples... How you can do things like simplify geometries
14:26:59 [phila]
ack b
14:27:06 [phila]
BartvanLeeuwen: I see you;re using stuff from the testbed
14:27:23 [phila]
... The project was obviously set up to get insights to see how things can be done, but is that a BP?
14:27:52 [phila]
BartvanLeeuwen: This whole geonovum test bed tried various things to see how we could solve problems but there's no production environment around it.
14:28:23 [phila]
... I'm not against that as I'm facing some of those problems myself, but on the plenary call I'd like to hear what people think.
14:30:26 [phila]
phila: makes the case for *some* fiction, to support the real world intended outcomes
14:30:57 [phila]
BartvanLeeuwen: There aren't any BPs yet, so we have no real world info to draw on.
14:31:08 [phila]
... We'd find lots of ways of solving the problem.
14:32:18 [phila]
BartvanLeeuwen: So in an example, we say that you need to have a URI for your features. Then show how you might do it, not how you must do it.
14:33:15 [phila]
Linda: For the simplifying geometries, we would say that you shoujld provide simplified geometries and then we can offer one or more examples
14:33:20 [phila]
phila: Sounds right to me
14:34:05 [phila]
Linda: AndreaPerego your name is on item 4
14:34:11 [phila]
... Anything to report?
14:34:30 [phila]
AndreaPerego: I was thinking about how I can contribute. It's not clear to me which level of detail we should aim for.
14:35:01 [phila]
... I said I'd take care of the metadata part. So I want to work out how I can apply this to the narrative.
14:35:21 [phila]
... I'm not sure I can address all the relevant metadata issues just sticking to the narrative.
14:35:26 [phila]
Linda: Can you give an example?
14:36:00 [phila]
AndreaPerego: We have this data, we have to make it discoverable, so the related BPs about publishing metadata, but also about the format we want to use for the publications.
14:36:09 [phila]
... Using schema.org, perhaps.
14:36:37 [phila]
AndreaPerego: There are some open issues on how to specify the precise geometry, bouncding box, CRS, spatial resolution etc.
14:36:49 [phila]
... Is it fine if I can just address some of the BPs
14:37:16 [phila]
Linda: I think that would be a good way to go. That's what I did. I couldn't provide complete content for item 3, so I filled in what I could.
14:37:29 [phila]
... The next step is to add more, perhaps someone else can do that.
14:37:42 [phila]
AndreaPerego: OK, I'll try and do my draft by next week.
14:38:19 [phila]
AndreaPerego: One thing that might be relevant to scope broadening, might be to share metadata via multiple platforms so that people from other communities can find it.
14:38:32 [phila]
AndreaPerego: Are we bound to the boundaries?
14:38:43 [phila]
Linda: I think you're free to broaden it...
14:38:59 [phila]
... I think if you publish the metadata so it's usable in different platform, that improves discovery
14:39:09 [phila]
... SO you're touching on GeoDCAT I guess?
14:39:28 [phila]
AndreaPerego: You have spatial metadata in ISO19115 but you want to make it available in RDF too.
14:39:36 [phila]
q+ to ytalk about the workshop
14:39:54 [phila]
Linda: And you mentioned the Data Quality Vocab to talk about spatial resolution
14:40:08 [phila]
AndreaPerego: Is spatial resolution a use case for the DQV?
14:40:34 [phila]
BartvanLeeuwen: What do you mean exactly?
14:40:51 [phila]
AndreaPerego: The map has 1km or 1m resolution, 1:1000 and so on
14:41:01 [phila]
... That's a differnet level of generalisation
14:41:40 [phila]
BartvanLeeuwen: That's rlevant. If you;re looking at a flood map, it matters if it's at 50 m or 100m resolution
14:41:45 [phila]
-> https://www.w3.org/TR/2016/WD-vocab-dqv-20160519/ DQV
14:43:10 [phila]
phila: Talks about the DQV and hwo it should be possible to express spatial resolution using it.
14:43:25 [phila]
AndreaPerego: I'll try and do my bit by next week's plenary call
14:43:56 [phila]
q-
14:44:11 [phila]
Linda: I won't go into other areas as the owners aren't here today.
14:44:20 [phila]
Topic: Steps for completing the narratuve
14:44:29 [phila]
s.narratuve/narrative/
14:44:33 [phila]
s/narratuve/narrative/
14:45:00 [phila]
Linda: Jeremy wants us to reference sources of data. That speaks to Bart's question about what needs to be real world
14:45:12 [phila]
Linda: Maybe we shouldn't be too strict about that.
14:45:39 [phila]
phila: wonders where Linda is reading this from?
14:46:04 [phila]
Linda: from the agenda https://www.w3.org/2015/spatial/wiki/Meetings:BP-Telecon20160518#Main_agenda
14:46:17 [phila]
Completing the narrative
14:46:17 [phila]
(i) reference source implementations "in the wild"
14:46:17 [phila]
(ii) convert the implementation pattern to discuss the relevant aspect of the flooding scenario;
14:46:17 [phila]
(iii) create a full worked example; publish to GitHub?
14:46:17 [phila]
(iv) grab code snippets for the Best Practice document
14:46:40 [phila]
Linda: from this list, I think the first item we havea discussed and we should bring it up in the full group.
14:47:04 [phila]
... The other parts, esp 3 and 4 ... full worked examples might be simple for some and a hurdle for others.
14:47:12 [phila]
... Not everyone can publish a full example
14:47:31 [BartvanLeeuwen]
q+
14:48:11 [phila]
phila: Examples can be published on w3.org with the doc
14:48:14 [phila]
ack b
14:49:01 [phila]
BartvanLeeuwen: Asked about time line
14:49:16 [phila]
phila: Suggested that an extension to July 2017 seems likely.
14:49:30 [phila]
BartvanLeeuwen: Nicky nad I will have a product within that time
14:49:40 [phila]
... The demo needs to be finished in September this year
14:50:09 [phila]
... SO by summer next year that's well within time
14:50:27 [phila]
Linda: That would be good. It also means that as a WG we don't need to create a full example
14:51:57 [phila]
phila: Dips a toe into problem of seeming to support one solution
14:52:07 [phila]
BartvanLeeuwen: It's a demo that will be oppen source etc. by the fire department
14:52:11 [phila]
phila: Sounds good.
14:52:17 [phila]
RRSAgent, draft minutes
14:52:17 [RRSAgent]
I have made the request to generate http://www.w3.org/2016/05/18-sdwbp-minutes.html phila
14:52:27 [BartvanLeeuwen]
+1
14:52:40 [AndreaPerego]
Thanks, and bye.
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