Distance and Geospatial Boosting

[Dieder Timmerman]

Hi,

I have a question about spacial possibilities. I can get scored results by a given spatial radius. That means that someone that is closer to my given geo-location will have an higher rank in the result list. I have however other searchterm conditions in my query too and given some of them a boost. Is it possible to boost the spatial search too and how do I do this in C#? Can I also return the distances from the given location?

I can query for a given spatial radius. 

eg.   query = query.WithinRadiusOf(spatialFieldname, distance, (double)lat, (double)lon);

When I declare this in the index

public class MyIndex : AbstractIndexCreationTask<ResultClass>

    {

        public MyIndex()

        {

            Map = ResultClass => from result in ResultClass

                                select new

                                {

                                    Id ,                                  

                                    Coordinates = SpatialGenerate("Coordinates", Convert.ToDouble(Latitude), Convert.ToDouble(Longitude) )

                                };

But how can I boost?

How can I report the user the distances? For example I wanna know the distance of the nearest supermarkets near my house.

Thanks in advance.

[Oren Eini (Ayende Rahien)]

You can explicitly specify sort order for a query using spatial. In that case, you can sort by a property and then by distance (OrderByDistance())

The distances aren't exposed, but since you have the actual data in the results, you can compute that client side.

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Oren Eini l CEO l Mobile: + 972-52-548-6969

Office: +972-4-622-7811 l Fax: +972-153-4-622-7811

 

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