WMTS enhancement: custom projections

[vanuan]

This WMTS has custom projection: ​http://213.227.232.41:6080/arcgis/rest/services/Aerofoto/MapServer/WMTS/1.0.0/WMTSCapabilities.xml

It looks like EPSG:4326

XMin: -10000.070003500176
YMin: -17000.000000000004
XMax: 8000.000000000004
YMax: 17000.070003500176
Spatial Reference: PROJCS["New_Projected_Coordinate_System",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTIONTransverse_Mercator,PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

​http://213.227.232.41:6080/arcgis/rest/services/Aerofoto/MapServer?f=jsapi

Unfortunately, JOSM doesn't seam to recognize extents and doesn't produce proper tiles.

Here are some expected results:

Coords: 46.5405729,30.7477846

​http://213.227.232.41:6080/arcgis/rest/services/Aerofoto/MapServer/WMTS/tile/1.0.0/Aerofoto/default/default028mm/1/2951/1660
​http://213.227.232.41:6080/arcgis/rest/services/Aerofoto/MapServer/WMTS/tile/1.0.0/Aerofoto/default/default028mm/2/14756/8303
​http://213.227.232.41:6080/arcgis/rest/services/Aerofoto/MapServer/WMTS/tile/1.0.0/Aerofoto/default/default028mm/3/29513/16606
​http://213.227.232.41:6080/arcgis/rest/services/Aerofoto/MapServer/WMTS/tile/1.0.0/Aerofoto/default/default028mm/4/73784/41516
​http://213.227.232.41:6080/arcgis/rest/services/Aerofoto/MapServer/WMTS/tile/1.0.0/Aerofoto/default/default028mm/5/147567/83033
​http://213.227.232.41:6080/arcgis/rest/services/Aerofoto/MapServer/WMTS/tile/1.0.0/Aerofoto/default/default028mm/6/295135/166066

[bastiK]

The xml document you linked states crs="urn:ogc:def:crs:EPSG::0". This looks like a typo / missing configuration. Are you requesting that JOSM should somehow magically guess what is meant?

[vanuan]

I'm requesting that the user should be able to guess and override.

[vanuan]

default028mm

[wiktorn]

You can guess the projection and provide custom projection with proj4 compatibile string in JOSM settings.

[vanuan]

So, the "does not support projection" is only a warning? JOSM would still try to load tiles?

[wiktorn]

It tries to load the tiles, if:

• the tile indexes based on custom projection are not negative
• the tile indexes based on custom projection are not exceeding MatrixWidth/MatrixHeight in getCapabilities document

You can avoid getting this warning, if you will provide following string in your projection definition:
+wmssrs=EPSG:0

But you still need to find proper parameters for this projection. I tried to convert the WKT that you provided to proj4 string, but it didn't gave proper results at location that you mentioned.

+proj=josm:smerc +datum=WGS84 +lat_0=0 +lon_0=0 +k=1 +x_0=0 +y_0=0 +ellps=WGS84 +units=m +no_defs +wmssrs=EPSG:0 +bounds=-180,-85.05112877980659,180,85.05112877980659

[Don-vip]

Server is not responding anymore.

[anonymous]

Work around:

• Save capabilities document to local storage.
• Edit capabilities document to mention the correct epsg
• In JOSM, point to edited capabilities document with ​file:///<location on local storage>