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• Algoritms for "fuzzy matching" strings

  - by Alexey Romanov

  By fuzzy matching I don't mean similar strings by Levenshtein distance or something similar, but the way it's used in TextMate/Ido/Icicles: given a list of strings, find those which include all characters in the search string, but possibly with other characters between, preferring the best fit.

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• Calculating length of objects in binary image - algorithm

  - by Jacek

  I need to calculate length of the object in a binary image (maximum distance between the pixels inside the object). As it is a binary image, so we might consider it a 2D array with values 0 (white) and 1 (black). The thing I need is a clever (and preferably simple) algorithm to perform this operation. Keep in mind there are many objects in the…

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• SQL Server 2008 Spatial Clustering

  - by illvm

  I am trying to group points of geospatial data based on density and relative distance. Is there a way that this can be done in SQL Server 2008 using the spatial features or would it be better to translate the data into graph data and use a graph clustering algorithm?

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• How to create a timeline with LaTeX?

  - by Mnementh

  In history-books you often have timeline, where events and periods are marked on a line in the correct relative distance to each other. How is it possible to create something similar in LaTeX?

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• what is the best video processing programing language ?

  - by Anas Al HAmdan

  Hello, i have 4 digital cams, the distance between every cam is 30 CM, i need a software or a programing library that works on c++ or Java, that can take videos from these 4 cams, and put them in one video showing only one image that is gathered from the 4 cams,, any hints would be helpful, Thanks anyway .

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• How to interpolate hue values in HSV colour space?

  - by nick

  Hi, I'm trying to interpolate between two colours in HSV colour space to produce a smooth colour gradient. I'm using a linear interpolation, eg: h = (1 - p) * h1 + p * h2 s = (1 - p) * s1 + p * s2 v = (1 - p) * v1 + p * v2 (where p is the percentage, and h1, h2, s1, s2, v1, v2 are the hue, saturation and value components of the two…

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• Millions of 3D points: How to find the 10 of them closest to a given point?

  - by Kazoom

  A point in 3-d is defined by (x,y,z). Distance d between any two points (X,Y,Z) and (x,y,z) is d= Sqrt[(X-x)^2 + (Y-y)^2 + (Z-z)^2]. Now there are a million entries in a file, each entry is some point in space, in no specific order. Given any point (a,b,c) find the nearest 10 points to it. How would you store the million points and how…

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• millions of 3d points how to 10 closest to origin

  - by Kazoom

  A point in 3-d is defined by (x,y,z). Distance d between any two points (X,Y,Z) and (x,y,z) is d= Sqrt[(X-x)^2 + (Y-y)^2 + (Z-z)^2]. Now there are a million entries in a file, each entry is some point in space, in no specific order. Given any point (a,b,c) find the nearest 10 points to it. How would you store the million points and how…

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• Finding whether two geo-coordinates lie on the same road

  - by Amarsh

  Hi there, Given two geo-coordinates in (latitude,longitude) format, is it possible to find out if they lie on the same road? I want to do this programatically not visually. I can perhaps extract addresses and compare the street name, but since streets can change names over a long distance, this solution doesnt sem to work :( …

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• Scrolling two views together

  - by user315441

  I currently have one Scrollview which contains a table layout and one list in my activity. Now my problem is that I wanted to move both of them(Scrollview and list) together and with proper synchronization... So if scrollview is being scrolled then listview should also scroll with the same distance, and vice versa... Thanks in…

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• What kind of data processing problems would CUDA help with?

  - by Chris McCauley

  Hi, I've worked on many data matching problems and very often they boil down to quickly and in parallel running many implementations of CPU intensive algorithms such as Hamming / Edit distance. Is this the kind of thing that CUDA would be useful for? What kinds of data processing problems have you solved with it? Is there…

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• Calculate the Hilbert value of a point for use in a Hilbert R-Tree?

  - by wrt

  I have an application where a Hilbert R-Tree (wikipedia) (citeseer) would seem to be an appropriate data structure. Specifically, it requires reasonably fast spatial queries over a data set that will experience a lot of updates. However, as far as I can see, none of the descriptions of the algorithms for this data…

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• MapKit Annotations and User location

  - by teddafan

  Hi all, I followed this tutorial to make my first app: http://icodeblog.com/2009/12/21/introduction-to-mapkit-in-iphone-os-3-0/ I would really like to know how to sort the annotations in the Table in order of distance to the user (the nearest annotation is the first one on the table) How is it possible to do that?…

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• load multiple directions in parallel in google map

  - by Maneesh

  My aim is to get distance between many locations thru GDirection object. Since I am using multiple objects, am not able to get distnace. Can someone help me out. Below is the code. for(ct=0;ct<size;ct++) { var gd=new GDirections(); gd.load("from: " + address + " to: " + offaddress[ct]); …

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• No middle-click scrolling in visual studio 2010?

  - by maxp

  Just as I started to assume this feature was ubiquitous(middle-clicking on a page, then scrolling speed/direction is relative to the distance of the pointer on the y-axis). I can't believe this hasn't been implemented into the text editor in vs2010, I used it all the time in 2005 and 2008. Has anyone managed to…

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• angular, try to display object in ng-repeat fails

  - by Simone M

  i'm writing an mobile application in javascript with angularJS and ionicframework (last beta v.11), i create dinamically an object and want to display all objects inside in a ng-repeat. Why nr-repeat don't display anything? This is screen from my object: I use this code for put values in scope: …

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• Does Android platform support SpatiaLite?

  - by Stan

  Is it possible to use SpatiaLite database on Android platform (1.6)? I am trying to program a google buzz-like app which need to take advantage of SpatiaLite functions, like calculating distance between 2 points, etc. Any external library needed? Thanks.

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• Presenting/dismissing modal view controller which contains a table makes the table go down

  - by alexeyndru

  I present/dismiss modal view controller with tableview in it. Each presenting/dismissing causes the table to move down, leaving a gap between the table and top of the view. so each time i present after a dismiss, i see my table going down one row-height distance . keeping the routine, the table…

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• How to calculate point along a curve?

  - by Nicros

  I am writing a custom animation for wpf and as a non math guy I have a couple questions... If I am given two Point3D's, the From and To, and assuming the origin is at 0,0,0 how do I calculate a curve between the two points? And once I have the curve 'plotted' and I know its length (how to do…

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• Help needed regarding CLCorelocation

  - by yogendra singh

  Hello everybody, i am developing a GPS application in which i needs to track the speed of the device/iphone ,i am using the CLCorelocation API's Locate me referral code provided by Apple my problem is that the LocationManager does not updates the current latitude and longitudes thus i am…

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• How to get direction information in iPhone application

  - by Buffernet

  Hi, In my app I use the getdistancefrom method in my app and get a distance between a current location and another set location. I would like to as well find the direction the other set location is in. What would the code look like to make this iPhone sdk call. The output would look…

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• How do I extend mouse space in OpenGL windowed mode

  - by Ben

  How do I extend the distance the mouse can move in an OpenGL window? What I wish to achieve is an fps like interface where the cursor is hidden and camera rotations are not limited by the mouse having to remain inside the window boundaries.

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• Finding partial substrings within a string

  - by Peter Chang

  I have two strings which must be compared for similarity. The algorithm must be designed to find the maximal similarity. In this instance, the ordering matters, but intervening (or missing) characters do not. Edit distance cannot be used in this case for various reasons. The…

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• Ideas for a C/C++ library

  - by Mohit Deshpande

  I thought one of the best ways to familiarise myself with C/C++, is to make a helpful library. I was maybe thinking like a geometry library, like to calculate areas, surface area, etc. It would be useful in game programming. Or maybe an algebra library, like for different…

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• Find the element with the most "neighbors" in a sequence

  - by Bao An

  Assume that we have a sequence S with n elements <x1,x2,...,xn>. A pair of elements xi,xj are considered neighbors if |xi-xj|<d, with d a given distance between two neighbors. So how can find out the element that has most neighbors in the sequence? (A simply way…

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