Base Maps - Tiling Scheme/Spatial Reference Issues

Permanently deleted user

20. November 2015 21:53

Is there any plan to allow base maps with different tiling schemes to be used in the same site? Or is there already some way to handle this that i'm not aware of?  I'd like to be able to use the ESRI world topo base map in addition to my own ortho base maps but I get an error when I try to add it. I can't change all our base maps to match ESRI's tiling scheme/spatial reference.

 

_img_ alt="User-added image" src="https://latitudegeo--c.na53.content.force.com/servlet/rtaImage?eid=90660000000XaH0&feoid=Body&refid=0EM60000000XqcI" _/_img_

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  Frank Martin

  4. März 2016 19:10

  +1

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  Ryan Cooney

  4. März 2016 20:20

  Tiles are pre-generated images so there is no practical way for the web browser to project them into a different spatial reference on the fly the way you can with a dynamic map service.

   

  If you want an Esri provided basemap in a different spatial reference you would need to generate the tiles from the source data yourself and then host the service. Esri does make a lot of preconfigured data available. It would be worth looking at http://www.esri.com/data/data-maps to see if they provide the source materials for the services you are after. The data probably wouldn’t be as up to date as the live services.

   

  --Ryan

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  Frank Martin

  4. März 2016 20:57

  Thanks Ryan.  We've been trying to change the esri cache tiling scheme for our imagery to include two addtional scale levels, 1:564 and 1:282.  We've update the cache tiling scheme by adding the the two levels, exported the tiling scheme to xml.  We then published a map service using the new tiling scheme.  The service works as a basemap; however, when we try to add other basemaps that use the esri cache tiling sceme, but don't have the addtional two level, i get the error message that the tiling scheme of the map service is not compatible with the map. Seems like they should be the same.  Not sure what I'm missing.  Any help would be greatly appreciated.

   

  Frank

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  Ryan Cooney

  4. März 2016 21:53

  Hi Frank,

   

  Manager will show this warning if the base service and the one you are adding do not contain any tile levels of detail that have the same resolution values.

   

  If you are able to provide public URLs to the services you are trying to work with we can give them a try here.

   

  --Ryan

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  Frank Martin

  5. März 2016 16:44

  Hi Ryan,

   

  Here are the URLs:

   

  https://gis.wilco.org/arcgis/rest/services/imagery/aerial2015/MapServer  and https://maps.wilco.org/arcgis/rest/services/TestSPmapcache2016/MapServer

   

  Thanks,

   

  Frank

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  Ryan Cooney

  5. März 2016 20:22

  Hi Frank,

   

  Since the spatial references of these two services don't match the tiles are incompatible.

   

  If the spatial references agree it is possible to have a service with extra levels of detail.

   

  --Ryan

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  Frank Martin

  7. März 2016 18:34

  Thanks Ryan.  So, that's only true with base map services, right?.   I can add an operational layer that is in web mercator to the base map (TestSPmapcache2016) that is in state plane with no problems.  

   

  Thanks,

   

  Frank

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  Ryan Cooney

  7. März 2016 20:09

  Hi Frank,

   

  That is correct. Although technically the difference is between tiled vs dynamic services. Tiled services cannot be projected on the fly. Dynamic services can be. In practice your tiled services are basemaps and your dynamic services are your operational layers.

   

  --Ryan

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  Frank Martin

  9. März 2016 14:40

  Hi Ryan,

   

  Ok.  Things are starting to make sense now.  This explanation is a great!  I really appreciate your help in understanding how the basemaps and operational layers are being projected.

   

  Thanks again,

   

  Frank 

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