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PHP Concave Hull: Find a concave shape that contains a set of points

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Picture of Chi  Hoang
Name: Chi Hoang <e-mail contact>
Packages: 12 Browse all classes by Chi  Hoang Browse all classes by
Country: Germany Germany - PHP jobs in Germany
Age: 29
All time rank: 104471 in Germany Germany
Week rank: 710 Up23 in Germany Germany Up
Innovation award
Innovation award
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This class can find a concave shape that contains a set of points known as the concave hull.

It takes a set of points in a two dimensional plane and uses the concave hull algorithm to calculate the coordinates of the edges of a shape that contains all the points in the set.

Another class can render the points and the concave hull shape as an image file in the PNG format.

  Classes of Chi Hoang  >  PHP Concave Hull  >  Download Download .zip .tar.gz  >  Support forum Support forum (1)  >  Blog Blog  >  RSS 1.0 feed RSS 2.0 feed Latest changes  
Name: PHP Concave Hull
Base name: concave-hull
Description: Find a concave shape that contains a set of points
Version: 0.1
PHP version: 3.0
License: Free for non-commercial use
All time users: 177 users
All time rank: 7170
Week users: 0 users
Week rank: 1109 Equal
 
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Group folder image Algorithms Numerical and statistical algorithms View top rated classes
Group folder image Graphics Colors, images, charts and picture formats View top rated classes

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example output
File Role Description
Accessible without login Image file hullexample.png Screen example output
Accessible without login Image file screenshot.png Screen screenshot


  Innovation Award  
PHP Programming Innovation award nominee
September 2013
Number 8
Sometimes a set of points are part of a concave shape.

This class can compute the edges of a concave shape that includes a given set of points.

Manuel Lemos

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Plain text file concave-hull.php Class class file
Accessible without login Plain text file example.php Example example
Accessible without login Plain text file star.dat Data example data

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