[MapProxy] Oversampling existing caches / tms services

[Paul Norman]

I can also confirm that this is an issue on my 1.4.0 setup. I have a layer
that goes to z20 made of caches of TMS sources, but some caches only go to
z19. In regions where those caches are visible, it gets screwed up at z20.

 

From: mapproxy-bounces at lists.osgeo.org
[mailto:mapproxy-bounces at lists.osgeo.org] On Behalf Of Travis Kirstine
Sent: Friday, March 01, 2013 2:35 PM
To: MapProxy at lists.osgeo.org
Subject: [MapProxy] Oversampling existing caches / tms services

 

I'm try to over sample images from a tms and having issues.  The tms is only
cached to zoom level 20 and I would like to serve it out to level 21.  It
appears that mapproxy fails to properly stitch together the images and the
same image is displayed multiple times, see here:
http://www.firstbasesolutions.com/images/mapproxy_oversample.jpg



layers:
  - name: 1237YORK
    title: York Region 2012
    sources: [1237YORK_cache]

caches:
  1237YORK_cache:
    grids: [spherical_mercator] # output cache
    sources: [1237YORK_tms]
    meta_buffer: 0
    meta_size: [1,1]
    format: my_format
    disable_storage: true

sources:
  1237YORK_tms:
    type: tile
    url:
http://localhost:8080/mapcache_wmts/tms/1.0.0/1237YORK_mapcache@gmaps/%(tms_
path)s.xxx
<http://localhost:8080/mapcache_wmts/tms/1.0.0/1237YORK_mapcache@gmaps/%25(t
ms_path)s.xxx> 
    grid: spherical_mercator_20

grids:
  spherical_mercator:
    srs: 'EPSG:3857'
    res_factor: 2
    num_levels: 22 # 0-21
    bbox: [-20037508, -20037508, 20037508, 20037508]
    bbox_srs: 'EPSG:3857'
    tile_size: [256,256]
    origin: sw

  spherical_mercator_20:
    srs: 'EPSG:3857'
    res_factor: 2
    num_levels: 21 # 0-20
    bbox: [-20037508, -20037508, 20037508, 20037508]
    bbox_srs: 'EPSG:3857'
    tile_size: [256,256]
    origin: sw











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