Add classic topomap NGI 2000

[jbelien]

From @StevenClays (#4):

Is it possible to add the topomap (2000) to the historical maps?
https://topomapviewer.ngi.be/?l=nl&x=629911.03&y=660643.61&zoom=8&baseLayer=top10r

[jbelien]

Hello @StevenClays,
The link you sent (NGI Topo10) seems only to be compatible with EPSG:3812 and EPSG:31370.
We need it to be compatible with EPSG:3857 to be added to our historical maps.

I looked on IGN/NGI website and couldn't find it.
If you find it (anywhere), please provide the link.
Thanks !

[StevenClays]

No possibilities for conversion then? @mstuyts?

[mstuyts]

For the NGI Topo10 layer, I have only found tiles in EPSG:3812. @jbelien, what's the url for tiles in EPSG:31370? I don't think the tiles can be converted to EPSG:3857, because they are prerendered. I looked into using MapProxy to reproject the tiles, because I use that to reproject WMS services. But I haven't found a way to that for tile map layers like the NGI Topo10 one.

I haven't been able to view these tiles outside the NGI TopoMapViewer. I don't know if it's possible in Leaflet to set the CRS of tile layer that's not a WMS source.

All other levels Topo25, Topo50, Topo100, Topo250 and Topo300 are available via WMS: https://wms.ngi.be/inspire/topomaps/service and they have EPSG:3857 and they can be added to Leaflet.

Another related detailed NGI layer is CartoWeb and that's available via WMTS: https://www.ngi.be/cartoweb/1.0.0/WMTSCapabilities.xml that also has EPSG:3857 available.

[StevenClays]

To explain: topographic maps of the 1990'ies-2000'ies are actually historical maps. So it would be nice to add them. Topo25 & Topo50 would allready be great!

[joostschouppe]

Added in osmbe/play@97a6be3
Remains to be seen if it actually works :)

[mstuyts]

For some reason, tiles are missing for some areas.

I checked the same service in QGIS, there it shows the same issue, so I guess the wms service has an issue.

[joostschouppe]

Yes, we noticed as well! I happen to have met someone from NGI at the Trefdag and mentioned it. He contacted the right colleagues
Now it would also be nice to make a smarter implementation that shows different maps at different zoomlevels.

[joostschouppe]

So... the service is NOT the 2000 version as I understood but rather the most current one! The holes are because there is no update yet! Everything you see is from 2016 and more recent, the empty areas should be filled in by 2022. So we should remove this version; the search for a 2000 version is still on...

[joostschouppe]

Any news on this? Any of you found the NGI 2000 link somewhere?

[mstuyts]

I recently talked to someone from NGI about this and the NGI 2000 still is not available as webservice. That NGI person also would like that layer to be available and I told him that would make a lot of people happy.

[StevenClays]

Cool, let's make a lot of people happy again, NGI person!