RE: BP restructuring: Metadata section CRS

Hi,

I would like to open more of a discussion about the CRS section here.  It feels to me that it needs a great deal of work to be of much use to the audience - at least how I envision the audience.  As it stands, I think it is mostly uninformative at best.  It should at least educate about web Mercator and WGS 84 and what the difference is between them, should it not?

My own perspective is that projections are a very useful tool in the belt of a web developer / designer, but few really know that it is available.  Some do, such as data journalists, Michael Corey and Mike Bostock (of D3.js and topojson fame).   Here is a link to a map projection guidance doc by Michael Corey that contains a great deal of useful material on the subject - https://source.opennews.org/en-US/learning/choosing-right-map-projection/.  While I am not suggesting that we go into as much detail as he does, I think the approach, perhaps in a more abbreviated form is useful.  (As a side note, D3.js, the crème of data visualisation tools on the web IMHO, has some projection support.)

I would like for some to take a look at the above link and comment on whether this approach is something we may want to adopt.  If so I will offer to do at least a first cut.

Cheers,
Byron

From: Linda van den Brink [mailto:l.vandenbrink@geonovum.nl]
Sent: Wednesday, 27 July 2016 12:47 a.m.
To: SDW WG (public-sdw-wg@w3.org)
Subject: BP restructuring: Metadata section

Hi all,

Finally, some progress. I've begun restructuring the Best Practices document based on the structure of the DWBP (same grouping and ordering of BPs). I shuffled all the BPs around to the best of my ability based on discussions we had in various places. I may have missed some insights because I find it difficult to keep track of all the mailing list discussions sometimes, so comments are more than welcome.  I've not started merging/consolidating BPs yet, but will do if appropriate. I'm working on them one by one, now.

http://w3c.github.io/sdw/bp/

In particular, I welcome more detailed comments on the section in the BP on spatial metadata. http://w3c.github.io/sdw/bp/#bp-metadata

I've got three BPs in that section at the moment.

The first one is about spatial coverage and other spatial descriptive metadata. Getting there, but needs examples at least.

The second is about CRS - there have been comments on this in the past as well as recent discussion, which I've tried to capture without making the section overly long or complex. Please review!

The third is on making the entities within a spatial dataset indexable (it was SDWBP25 in the FPWD). Even though this is not really a spatial but a general issue I've retained it for now, because it's useful information and not detailed in DWBP. And even though it's not clearly about metadata (at least not on dataset level), this section seems the best fit for it. Also, this BP needs examples and can probably be improved.

Your thoughts are appreciated!

Linda


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