Determining if a set of coordinates are within the same area

Posted by Dat on Stack Overflow See other posts from Stack Overflow or by Dat
Published on 2010-06-02T17:15:23Z Indexed on 2010/06/02 17:24 UTC
Read the original article Hit count: 172

Filed under:

c#

|

coordinates

|

cluster

When I say coordinates I mean latitude and longitude coordinates of earth. I want to determine if a set of coordinates are within the same area (my cutoff is 200 miles). I've been googling "cluster alorithm" but I'm uncertain which would work best for me.

Thanks

© Stack Overflow or respective owner

Related posts about c#

.NET WebRequest.PreAuthenticate not quite what it sounds like

as seen on West-Wind - Search for 'West-Wind'
I’ve run into the problem a few times now: How to pre-authenticate .NET WebRequest calls doing an HTTP call to the server – essentially send authentication credentials on the very first request instead of waiting for a server challenge first? At first glance this sound like it should be easy:… >>> More
HttpWebRequest and Ignoring SSL Certificate Errors

as seen on West-Wind - Search for 'West-Wind'
Man I can't believe this. I'm still mucking around with OFX servers and it drives me absolutely crazy how some these servers are just so unbelievably misconfigured. I've recently hit three different 3 major brokerages which fail HTTP validation with bad or corrupt certificates at least according to… >>> More
The dynamic Type in C# Simplifies COM Member Access from Visual FoxPro

as seen on West-Wind - Search for 'West-Wind'
I’ve written quite a bit about Visual FoxPro interoperating with .NET in the past both for ASP.NET interacting with Visual FoxPro COM objects as well as Visual FoxPro calling into .NET code via COM Interop. COM Interop with Visual FoxPro has a number of problems but one of them at least got a lot… >>> More
Dynamic Type to do away with Reflection

as seen on West-Wind - Search for 'West-Wind'
The dynamic type in C# 4.0 is a welcome addition to the language. One thing I’ve been doing a lot with it is to remove explicit Reflection code that’s often necessary when you ‘dynamically’ need to walk and object hierarchy. In the past I’ve had a number of ReflectionUtils that used string based expressions… >>> More
Finding a Relative Path in .NET

as seen on West-Wind - Search for 'West-Wind'
Here’s a nice and simple path utility that I’ve needed in a number of applications: I need to find a relative path based on a base path. So if I’m working in a folder called c:\temp\templates\ and I want to find a relative path for c:\temp\templates\subdir\test.txt I want to receive back subdir\test… >>> More

Related posts about coordinates

Minecraft Style Chunk building problem

as seen on Game Development - Search for 'Game Development'
I'm having some problems with speed in my chunk engine. I timed it out, and in its current state it takes a total ~5 seconds per chunk to fill each face's list. I have a check to see if each face of a block is visible and if it is not visible, it skips it and moves on. I'm using a dictionary (unordered… >>> More
Matlab: convert global coordinates to figure coordinates

as seen on Stack Overflow - Search for 'Stack Overflow'
If I get coordinates via coords = get(0,'PointerLocation'); How can I convert them into points gotten via ginput? i.e, I would like to get the same values from coords = get(0,'PointerLocation'); coords=someConversion(coords); As I would have gotten by calling coords=ginput(1); And clicking… >>> More
Hexagonal Grid Coordinates To Pixel Coordinates

as seen on Stack Overflow - Search for 'Stack Overflow'
I am working with a hexagonal grid. I have chosen to use this coordinate system because it is quite elegant. This question talks about generating the coordinates themselves, and is quite useful. My issue now is in converting these coordinates to and from actual pixel coordinates. I am looking for… >>> More
Transform OpenGL coordinates to lower UIView coordinates

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am new to OpenGL over iPhone. I am developing an iPhone app similar to a barcode reader but with an extra OpenGL layer. The bottommost layer is UIImagePickerController, then I use UIView on top and draw a rectangle at certain co-ordinates on the iphone screen. So far everything is OK. Then… >>> More
Can get coordinates from iPhone simulator, but can't get coordinates from iPhone device

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi everyone, I've run into something of a mysterious bug (to me). I have some code to pick out the user's current location on the iPhone SDK. It works fine on the iPhone simulator, but when I try to run it on the actual device, I get a weird error. Here is the code (I am using ASIFormDataRequest… >>> More