not working class

Hello,
I downloaded and run your phpclass but - receive this error:


Warning: Division by zero in ../concave-hull.php on line 226

Warning: Division by zero in ../concave-hull.php on line 248

Hello,
Can you try again please? It's just a warning not a functional error. Anyway I make php to ignore all errors. Thank you!

Very interesting class, which I would like to get working for me!

How would I go about using it to build an array of points of the concavehull itself? I've tried a few things, but nothing has worked so far. When mapping the hull, the lines zig-zag instead of surrounding the provided points.

Any advice you have would be greatly appreciated.

You can also contact me.

Thanks for your reply!

Perhaps this class is not well suited to latitude / longitude?

Your included example (example 3), does not appear to produce an image that could be considered useful. and its that very example I am most interested in returning an array of point for.

Interesting. Perhaps the co-ordinates is not interesting? Interesting that you are working on my example #3? Not sure what it's not working? Can you elaborate? Where it's not working? By the way you can look here a working version:http://www.phpdevpad.de/geofence/.

Thanks again for your reply!

When I run your example #3, the image produced looks like this:

drive.google.com/file/d/0B2o_34PKlX ...

I viewed your webpage and it seems to run well there. I am trying to represent a MUCH smaller geographical location than a country.

Ideally I would like to be able to return an array of coordinates which represent the hull, but I can see no way of doing that as the input array is resorted.

Yes, it works. I won a prize! Not sure why I must defend myself? Can you post it? Usually geo-coordinates are angles and the map is 2d. In my script there is mapWidth and mapHeight. Maybe you can play with it?

Sir you misunderstand me. I am not asking you to defend yourself at all. I was asking for your help. Sorry if it was unclear. I will find another solution.

Congratulations on your prize.

Hmm, I see. There was an error. The projected map wasn't stored or saved and give to the function. I fixed it, cam you try again? Jusst in case here is the fix:

foreach ($set as $key => $arr)
{
list($lon,$lat) = $arr;
$tx = ($lon - $mapLonLeft) * ($newWidth/$mapLonDelta)*$mapRatioW;
$f = sin($lat*M_PI/180);
$ty = ($mapHeightD-(($worldMapWidth/2 * log((1+$f)/(1-$f)))-$mapOffsetY));
$proj[]=array($tx,$ty);
}

$hull=new hull();
$hull->main($proj,$mapWidth,$mapHeightD);