S52 tileprovider

[manimaul]

I'm interested in creating an opensource S-57 "tileprovider" for the Osmdroid Android map library ( http://code.google.com/p/osmdroid/ ). Do you think S52 would be suitable and/or do you have any input advice here before I dive into this? Thanks very much.

Will Kamp --mxmariner.com

[sduclos]

Hi Will,

Somebody asked me the same a few month ago. It was not OSM specific but the goal seem the same.

The idea was to use S52 in a tile server (mapserver).

I think that the call S52_dumpS57IDPixels() in my libS52 (see S52.h) would be the way to go. This call can dump the framebuffer to a .PNG file.

But I haven't try myself to hook that to a tile server.

Have fun!

Sylvain.

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From: Will Kamp notifications@github.com To: sduclos/S52 S52@noreply.github.com Sent: Monday, March 25, 2013 6:32:37 PM Subject: [S52] S52 tileprovider (#3)

I'm interested in creating an opensource S-57 "tileprovider" for the Osmdroid Android map library ( http://code.google.com/p/osmdroid/ ).  Do you think S52 would be suitable and/or do you have any input advice here before I dive into this?  Thanks very much. Will Kamp --mxmariner.com — Reply to this email directly or view it on GitHub.

[Skippern]

I am looking for S52enc 2 maptiles, preferably standard .png tiles for Leaflet, but can also look at Mapbox vector tiles format or MBTiles. Basically, I have lots of data in ENC and iENC formats that I would like to have displayed as web map tiles.

[sduclos]

@Skippern I am late

Maybe GDAL 2.3 new MBTiles driver for vector datasets can help you. MVT: Mapbox Vector Tiles - GDAL

[Skippern]

No problem @sduclos

Currently GDAL 2.3 is not available as stable/tested on neither of the systems I use (Ubuntu 16.04 GDAL 2.2.2+dfsg-1~xenial, MacPort_Darwin GDAL 2.2.4)

As I currently are prevented from running experimental builds of GDAL, I will not be able to test this right away.

Further I have not been successful in using GDAL/Ogr to read/convert S52 data, so I would need a pre-processor of some sort.

An interesting option could be a tileserver rendering .png or MVT on the fly.

[sduclos]

For reference I updated the .PNG of a screenshot of S-64 GB4X0000 [1]. This ENC is denser then regular ENC for testing purpose. This .PNG is 1280x1024 pixels and take somewhere ~20ms to render on a commodity GPU. So a tiling server of a .PNG seem reasonable for light load.

[1] https://raw.githubusercontent.com/sduclos/S52/master/test/ref_dump/GB4X0000.png

[mlthlschr]

@Skippern have you tried anything in that direction? I am also thinking about something like that. If you have experiences, would be great if you could share them. This might save some time and stress