geography

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Cities to Metropolitan areas

I have a database of cities (in both the US and the rest of the world). The database entries are simple text strings.[详细]

2022-12-27 21:54 分类：问答
Grouping geographical shapes

I am using Dundas Maps and attempting to draw a map of the world where countries are grouped into regions that are specific to a business implementation.[详细]

2022-12-26 22:09 分类：问答
What's a reasonable number of rows and tables to be able to join in MySQL?

I have one table that maps locations to postal codes. For example, New York State has about 2000 postal codes. I have another table that maps mail to the postal codes it was sent to, but this table ha[详细]

2022-12-25 06:18 分类：问答
What is the correct way to implement a massive hierarchical, geographical search for news?

The company I work for is in the business of sending press releases. We want to make it possible for interest开发者_运维问答ed parties to search for press releases based on a number of criteria, the m[详细]

2022-12-24 23:15 分类：问答
Determine if a POINT is between two other POINTs on a LINESTRING (SQL Server 2008 Geography)

I have a SQL Server 2008 GEOGRAPHY data type in my dat开发者_如何转开发abase containing a LINESTRING. The LINESTRING describes a potentially curvy road.[详细]

2022-12-18 02:49 分类：问答
Moving a Point along a Path in SQL Server 2008

I have a geography field stored in my database, holding a linestring path. I want to move a point n meters along this linestring, and return the destination.[详细]

2022-12-16 17:51 分类：问答
Building a geo focused app: what should I know?

I am looking forward to build an application that relies heavily on geographic data. The application will use HTML5\'s ability to get GPS data and will do computations such as finding the nearest str[详细]

2022-12-16 09:33 分类：问答
Query to return the rows that are within a certain geographic distance to a given row (using sql server 2008)

I have a table with multiple records, each contains a field called \"coords\". This field has been updated with a geography point.[详细]

2022-12-16 01:06 分类：问答
How to calculate area which was compose with mulit- Coordinates?

as topic, the Coordinates value (Latitude and Longitude) is known , these Coordinates will compose as polygonal area , my question is how to calculate the area of the polygo开发者_StackOverflownal tha[详细]

2022-12-15 19:31 分类：问答
Linq & unsupported data types (Geography)

So, Linq does not support the Geography data type, which throws a major spanner in the works in the lovely \'drag table onto the Linq design surface\' develop开发者_如何学Cemnt model.[详细]

2022-12-13 17:32 分类：问答