spatial-index

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How can I specify this SQL Index Hint on my SQL Server 2008 query?

I\'m not sure where/how I specify this SQL Spatial Index hint on my query :- SELECT Whatever FROM Table1 a[详细]

2023-01-24 21:19 分类：问答
Any spatial index support in the standard PostgreSQL installation?

I\'m new to PostgreSQL. For the default install of PostgreSQL (no extension like PostGIS), if t开发者_运维技巧here\'s geographic fields defined in my table, then what kinds of index does PostgreSQL[详细]

2023-01-11 05:04 分类：问答
What does SQL Server do for spatial data outside the bounding box of the index?

I read an article that says: The (x-min,y-min) and (x-max,y-max) coordinates determine the placement and dimensions of the bounding box.[详细]

2023-01-11 04:53 分类：问答
Why are my spatial searches slower in SQL Server than PostGIS?

I\'m working on moving some spatial searching capabilities from Postgres with PostGIS to SQL Server and I\'m seeing some pretty terrible performance, even with indexes.[详细]

2023-01-11 02:34 分类：问答
How to implement Spatial(Geo-Location) searching in Grails?

I am working on Grails 1.3.2 with MySql. I need to store the latitude and longitude of certain locations in the database and then on the basis of the user\'s current location, I need to return the ite[详细]

2023-01-07 03:25 分类：问答
Spatial lucene simple query doesn't work?

does anyone have any experiences using the lucene\'s spatial search component (lucene 3.0)? I tried a very simple example but could not get the search to return anything, see below for all the codes[详细]

2022-12-19 20:24 分类：问答
What is an infinite scaleless quadtree called?

2D spatial indexing question: What do you call a data structure that is essentially an infinite* quadtree whose nodes contain neither absolute coordinates nor absolute scales -- in which the coordina[详细]

2022-12-19 04:33 分类：问答
Is there any documented free R-Tree implementation for .NET?

I found some open source R-Tree implementations in开发者_StackOverflow C#, but none with documentation nor signs of being used by someone else than the developer.The NetTopologySuite is a JTS port to[详细]

2022-12-16 13:51 分类：问答
Best Performance-Critical Algorithm for Solving Nearest Neighbor

We have a list of x,y pairs. Every pair represents a point on a 2D space. I want to find the closest point from this list, to a specific point xq,yq. What is the best performance-critical algorithm fo[详细]

2022-12-10 04:34 分类：问答