Need projections better suited for world mapsm

2 posts, 0 answers
  1. VikramAdith
    VikramAdith avatar
    1 posts
    Member since:
    Apr 2011

    Posted 19 Apr 2011 Link to this post

    Hi, we are developing a dashboard showing a map of the world, and the available Mercator projections do not look appropriate. I guess the BNG projection cannot be used for a world map either.

    Is there any way to use a different projection system such as Robinson to get a better looking world map? A projection class for Robinson (or any other suitable projection), or even instructions to help us code such a class would be helpful.
  2. Andrey
    Andrey avatar
    1681 posts

    Posted 21 Apr 2011 Link to this post

    Hello VikramAdith,

    Currently the map control allows to display shape files for the following projections:
    - The Mercator projection EPSG:4326 (default) that refers to WGS84 as (latitude, longitude) pair coordinates in degrees
    - The OSGB-1936 projection which is also known as EPSG:27700
    - The EPSG:900913 projection which is also known as EPSG:3857 and Pseudo-Mercator projection that refers to WGS84 as (latitude, longitude) pair coordinates in meters

    But note that the OSGB-1936 and EPSG:900913 can be used with empty provider only.

    The real imagery services (Bing Maps and Open Street Maps) which are supported by map control provide tile images for Mercator projection only.
    The map control allows you to use your own custom projections. You should implement the ISpatialReference interface for creating it. But if you would like to use real world map (not from shape file or from kml), then you must have a map imagery service which is able to return tiles according to this projection. Also it will require creating the custom map provider which will use tiles from this imagery service for showing a map.

    Best wishes,
    Andrey Murzov
    the Telerik team

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