I can compute horizontal and vertical points, but I cant figure out how to compute distance using diagonal points. Can someone help me with this. here's the code for my horizontal and vertical measuring: private float ComputeDistance(float point1, float point2) { float sol1 = point1 - point2; float sol2 = (float)Math.A...
Hello, I guess you have all tried "Google Places" in Maps. This is a list of POI close to you. I really would like to do the same feature in my application with a list of GPS coordinates, but that seem really complicated. Making the listview with the distance and the little arrow is very easy, but I cannot understand how to update thi...
hi , in my application i am collecting latitude and longitude when user dialed call or receive call at that time i am calling one function with NSTimer with delay of 15sec , and again i am collecting latitude and longitude. the problem is that while i am calculating distance between them it give minimum distance 0.87 miles or 1 mil...
Hi! I have been using advance on some iterators, but I am afraid of a possible leapfrog above end(). I would like to make sure my iterators stay between the bounds, I thought of the distance but it seems it does not return what I would be expecting (non-positive values when iterators overpass end()). How would you make sure there is no ...
How to Join Tables with Distance Calculation I am trying to join two tables together. First is a calendar of events with lat/lng sorted by distance. I also need to get the business information from the directory. This one works without joining the tables: $query = "SELECT calendar.id,calendar.coupon,( 3959 * acos( cos( radians($la...
Hello, I have a collection of stores with a geospacial index on the location propery. What I am trying to do is given the user's latitude, latitude and a search radius (mi), I want to return the list of stores that are within those parameters. I saw the following example on the MongoDB documentation (http://www.mongodb.org/display/DOC...
dear all I am using Jena please help me. i need to compute distances between classes from a specific class. how can i calculate Distance(number of links) between two resources in an ontology,please? thanks ...
I'm not sure what mathematical concept this is to support my question. ^^ Let's say we have PointA as the reference. The problem is to find the points around PointA within a given radius (Using coordinates). My approach would be to compute the distance of every point (Pythagorean) and then compare with the given radius. I'm sure that th...
not necessarly u need to travel once ...
If so, please explain how. Re: what is distance -- "The distance between two strings is defined as the minimal number of edits required to convert one into the other." For example, xyz to XYZ would take 3 edits, so the string xYZ is closer to XYZ and xyz. If the pattern is [0-9]{3} or for instance 123, then a23 would be closer to the ...
This is more of a challenge question than something I urgently need, so don't spend all day on it guys. I built a dating site (long gone) back in 2000 or so, and one of the challenges was calculating the distance between users so we could present your "matches" within an X mile radius. To just state the problem, given the following dat...
I have a long list of origins and destinations in Excel, using webquery I can fill in the cities and postal code to give a webquery like: http://maps.googleapis.com/maps/api/directions/xml?origin=Scoresby&destination=Melborne&sensor=false This returns me a long XML file, but all I need is just the distance. Is there a way to ex...
I have to query a database of thousands of entries and order this by the distance from a specified point. The issue is that each entry has a latitude and longitude and I would need to retrieve each entry to calculate its distance. With a large database, I don't want to retrieve each row, this may take some time. Is there any way to bui...
Given only the set of coordinates, is there a way to find the scale factor being used? It will then be used to compute the distances between the coordinates. Let's consider this: On a map scale: (This is the only given) pointA(33.511615, -86.778809) pointB(34.398558, -87.669116) On a real world scale: Distance between the 2 poi...
Hey, Is there an existing Java library to represent common weights and measures? I would like something which allows you to create objects which represent weight and distances in different units and let you compare them. It wouldn't be too hard to implement myself, but in this case I don't want to re-invent the wheel, since this wheel i...