Geo nearest neighbor solution needed for Linq

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Can this be done in linq?
Its a very useful, needle haystack geo problem that people need!
Any leads appreciated!
Jim

VB

Structure place
    Public lat As Double
End Structure

Dim a(0), b(0) As place
    a(0).lat = 35
    b(0).lat = 35.1

    select * from a join b where abs(a.lat-b.lat)< 0.1

Posted 23-Oct-13 6:40am

cellurl

Updated 23-Oct-13 6:42am

v3

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**Zoltán Zörgő** · Answer 1 · 2013-10-23T06:49:00

Solution 1

You possibly could with devart extensions: http://forums.devart.com/viewtopic.php?f=30&t=27561[^]

Posted 23-Oct-13 6:49am

Zoltán Zörgő

Comments

cellurl 23-Oct-13 13:03pm

I assume you mean I can solve it in mysql? I really want to do it in linq. Thanks

Zoltán Zörgő 23-Oct-13 13:12pm

The link is about MySQL and Linq, but Linq to EF over MySQL. Check it out.
But the basic idea is that in linq to any sql the engine needs to map the function you use to a function existing in that sql implementation. So everything depends on your linq provider.