geospatial

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Sorting MongoDB GeoNear results by something other than distance?

I\'m developing a PHP application in which we need to retrieve results within a certain boundary, but ordered by the create date of the results, not the distance. I figured MongoDB\'s geoNear command[详细]

2023-02-21 19:22 分类：问答
Query near vs. within

Using MongoDB I\'m querying homes that are within 25 miles of a lat/long. My first attempt to do this used the near command, like so:[详细]

2023-02-21 02:04 分类：问答
Bing maps graph matching

I\'m currently working with Bing maps and I am wondering if there\'s some bui开发者_运维知识库lt in graph matching function. What I want to achieve is, to be able to connect two or more points with li[详细]

2023-02-20 21:57 分类：问答
delphi read xml element

I\'m new to XML and we need to do GeoCoding with the new Bing Spatial Data API. I\'ve managed to开发者_如何学Python get a result back from them in xml format. How would I read specific elements in the[详细]

2023-02-20 13:00 分类：问答
PHP Select a random lon/lat within a certain radius

Let\'s say I have this lon/lat: 33.33333,22.222开发者_如何学运维22 How can I randomly select another lon/lat within an X miles/km radius?[详细]

2023-02-20 02:35 分类：问答
Drawing anonymous circles in Google Maps

I\'m trying to draw a google maps that has multiple Circle overlays, however I do not want to reveal the correct center of the radius.[详细]

2023-02-20 02:16 分类：问答
Using MongoDB's Geospacial index with 3d data

I have a set of documents each of which contain a point in 3-space stored in a MongoDB collection.MongoDB currently has Geospatial Indexes only for 2-space.Is there a way of lev开发者_JAVA百科eraging[详细]

2023-02-20 00:40 分类：问答
Finding the points around a given radius of a specified point (haversine formula q)

I have a small problem, I was just testing the use of the haversine formula for my project In the project I specify a point and I want to find all of the points within a given radius of the point tha[详细]

2023-02-19 22:11 分类：问答
SQLServer Spatial query is returning error An expression of non-boolean type specified in a context where a condition is expected, near ')'

I am trying to learn how to do radius search on records using the new SqlServer 2008 managed spacial type and methods (geography) for doing geospatial calculations.I am following the samples on this w[详细]

2023-02-19 21:54 分类：问答
translate geolocation coordinates

I\'m trying to translate latitude and longitude coordinates into coordinates of my own defined map. For instance:[详细]

2023-02-18 09:45 分类：问答