Read WMTS source with Maproxy

Question

I am trying to consume city of Paris WMTS source with EPSG:2154 and convert that to iD compatible (OpenStreetMap compatible) tile server (WMS or TMS).

The map is visible here et here is an example of tile.

I cannot get it working. I have already followed this guide https://lists.osgeo.org/pipermail/mapproxy/2013-August/001674.html

Can someone check this out and say what I am doing wrong.

The WMTS GetCapacibilities is available here.

mapproxy.yaml:

services:
  tms:
  wmts:
  wms:
  demo:

layers:
  - name: planches_igc2
    title: Plan de l'Inspection Générale des Carrières de la ville de Paris
    sources: [planches_igc2]


caches:
  planches_igc2:
    grids: [utm32n] 
    sources: [planches_igc_wmts]


sources:
  planches_igc_wmts:
    type: tile
    url: https://capgeo2.paris.fr/public/rest/services/IGC/IGC_Atlas_carrieres_image/MapServer/WMTS/tile/1.0.0/IGC_IGC_Atlas_carrieres_image/default/default028mm/%(z)s/%(x)s/%(y)s.png
    grid: utm32n

grids:
    webmercator:
        base: GLOBAL_WEBMERCATOR
    utm32n:
      origin: 'nw'
      srs: 'EPSG:2154'
      bbox_srs: 'EPSG:2154'
      tile_size: [256,256]
      bbox: "637827.9419,6849420.6548000015,670590.5560000017, 6874797.487399999"
      res: [
           #  res            level     scale @90.7 DPI
            305.7480111760, #  0     1091957.18277137
            152.8740055880, #  1      545978.59138569
             76.4370027940, #  2      272989.29569284
             38.2185013970, #  3      136494.64784642
             19.1092506985, #  4       68247.32392321
              9.5546253492, #  5       34123.66196161
              4.7773126746, #  6       17061.83098080
              2.3886563373, #  7        8530.91549040
              1.1943281687, #  8        4265.45774520
              0.5971640843, #  9        2132.72887260
              0.2985820422, # 10        1066.36443630
              0.1492910211, # 11         533.18221815
              0.0746455105, # 12         266.59110908
      ]
  



globals:

Your source URL is definitely wrong, you need to replace x,y to %(y)s/%(x)s. Do you have the original Link to the WebMap system, where the layer is available? I cannot find the layer in capgeo.sig.paris.fr/Apps/ParisPLU. My guess is that the service needs an additional HTTP Referrer Header. For testing purpose, you need to fetch one image with CURL without HTTP referrer header. — christoph, Commented May 5 at 9:45

christoph · Accepted Answer · 2024-05-05 20:46:46Z

It looks like the WMTS service is disabled for this ArcGIS layer, but there is always a plan "B". You can use the ArcGIS Rest Export operation instead (https://developers.arcgis.com/rest/services-reference/enterprise/export-map.htm). There is no need to add a HTTP referrer header as I suggested in the comment.

And here's the complete MapProxy service configuration file (paris.yaml):

services:
  demo:
  kml:
  tms:
    # needs no arguments
  wmts:
    restful: true
    restful_template:
        '/{Layer}/{TileMatrixSet}/tile/{TileMatrix}/{TileRow}/{TileCol}'
  wms:
    srs: ['EPSG:3857','EPSG:2154']
    bbox_srs: ['EPSG:3857','EPSG:2154']
    image_formats: ['image/png; mode=24bit', 'image/jpeg', 'image/png','image/tiff']
    max_output_pixels: [1000000,1000000]

    #md:
      # metadata used in capabilities documents
      #title: MapProxy WMS Proxy

layers:
  - name: planches_igc2
    title: Plan de l'Inspection Générale des Carrières de la ville de Paris
    sources: [planches_igc2]


caches:
  planches_igc2:
    grids: [webmercator] 
    sources: [planches_igc_wmts]
    format: image/png
    #link_single_color_images: true
    #cache:
    #  type: geopackage
    #  filename: planches_igc.gpkg
    #  table_name: planches_igc_tiles

sources:
  planches_igc_wmts:
    type: tile
    url: https://capgeo2.paris.fr/public/rest/services/IGC/IGC_Atlas_carrieres_image/MapServer/export?bbox=%(bbox)s&bboxSR=3857&size=256,256&imageSR=3857&format=png&dpi=96&transparent=true&f=image
    #url: https://capgeo2.paris.fr/public/rest/services/IGC/IGC_Atlas_carrieres_image/MapServer/export?bbox=%(bbox)s&bboxSR=2154&size=256,256&imageSR=2154&format=png&dpi=96&transparent=true&f=image
    #url: https://capgeo2.paris.fr/public/rest/services/IGC/IGC_Atlas_carrieres_image/MapServer/WMTS/tile/1.0.0/IGC_IGC_Atlas_carrieres_image/default/default028mm/%(z)s/%(y)s/%(x)s.png
    grid: webmercator
    transparent: true
    on_error:
      204:
        response: transparent
        cache: False
      other:
        response: transparent
        cache: False
        
grids:
    webmercator:
        base: GLOBAL_WEBMERCATOR
        res: [305.748113140558,152.874056570411,76.4370282850732,38.2185141425366,19.1092570712683,9.55462853563415,4.77731426794937,2.38865713397468,1.19432856685505]
    
    utm32n:
      origin: 'nw'
      srs: 'EPSG:2154'
      bbox: [637827.9419,6849420.6548000015,670590.5560000017, 6874797.487399999]
      bbox_srs: 'EPSG:2154'
      tile_size: [256,256]
      res: [
           #  res            level     scale @90.7 DPI
            305.7480111760, #  0     1091957.18277137
            152.8740055880, #  1      545978.59138569
             76.4370027940, #  2      272989.29569284
             38.2185013970, #  3      136494.64784642
             19.1092506985, #  4       68247.32392321
              9.5546253492, #  5       34123.66196161
              4.7773126746, #  6       17061.83098080
              2.3886563373, #  7        8530.91549040
              1.1943281687, #  8        4265.45774520
              0.5971640843, #  9        2132.72887260
              0.2985820422, # 10        1066.36443630
              0.1492910211, # 11         533.18221815
              0.0746455105, # 12         266.59110908
      ]


globals:
  http:
    ssl_no_cert_checks: True
    client_timeout: 10000

  #srs:
  #  proj_data_dir: '.'

  # # cache options
  #cache:
    # where to store the cached images
  #  base_dir: './paris_cache'
    # where to store lockfiles
    #lock_dir: './world_cache/locks'
    #tile_lock_dir: './world_cache/tile_locks'
    #meta_size: [2,2]
    #bulk_meta_tiles: true
    #concurrent_tile_creators: 2
  #   # request x*y tiles in one step
  #   meta_size: [4, 4]
  #   # add a buffer on all sides (in pixel) when requesting
  #   # new images
  #   meta_buffer: 80

  # image/transformation options
  image:
    #resampling_method: nearest
    #resampling_method: bilinear
    resampling_method: bicubic
    jpeg_quality: 95
  #     # stretch cached images by this factor before
  #     # using the next level
  #     stretch_factor: 1.15
  #     # shrink cached images up to this factor before
  #     # returning an empty image (for the first level)
  #     max_shrink_factor: 4.0
    paletted: false
      
  #tiles:
  #  expires_hours: 24

I loaded the MapProxy WMS service into QGIS (see picture above).

Thanks you for your reply. Unfortunately, the export operation provides only "empty" tiles : i.imgur.com/JcF0qof.png The excepted tiles are that ones: arcgis.com/apps/instant/media/… — divulgacheur, Commented May 5 at 20:15
I changed the Yaml file to use WebMercator instead of EPSG:2154 and removed the GeoPackage cache. The WMS layer is shown in QGIS as you can see in the picture. — christoph, Commented May 5 at 20:48
@divulgacheur you are absolutely right... now I understand what you mean. This following link shows a tile you want to get: capgeo2.paris.fr/public/rest/services/IGC/… Unfortunately, with export operation you only get the data frames... but I guess it must be possible to get the images as well. — christoph, Commented May 5 at 21:06
@christoph, you might be interested in this more or less related thread: gis.stackexchange.com/questions/484431/…. — zabop, Commented Aug 2 at 21:25
@divulgacheur maybe this Leaflet config helps: gist.github.com/torjusti/ce61d1733616ea63853245b17d9b4bd6 — christoph, Commented Aug 3 at 7:58

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