This tag calculates the distance in miles, "as the crow flies", between two sets of coordinates. Used in combination with [tsp_getcosts] and [tsp_gettour], can be used to generate a "next-closest tour" to solve basic TSP problems.
Parameters
-startLat
decimal, required
Latitude of starting point.
-startLong
decimal, required
Longitude of starting point.
-endLat
decimal, required
Latitude of ending point.
-endLong
decimal, required
Longitude of ending point.
Sample Usage
// test data
var('cities') = array(
'Location A' = array(-82.521102,37.484227),
'Location B' = array(-84.622564,37.059857),
'Location C' = array(-84.622668,37.059893),
'Location D' = array(-82.642757,38.480449),
'Location E' = array(-84.600683,37.031884),
'Location F' = array(-85.062656,36.982708),
'Location G' = array(-84.623724,37.055167),
'Location H' = array(-84.622564,37.059857),
'Location I' = array(-84.072400,37.107600),
'Location J' = array(-84.335426,36.841322)
);
// distance example
'Distance between ' + $cities->get(1)->first + ' and ' + $cities->get(10)->first + ': ';
tsp_getdistance(
-startLat=$cities->get(1)->second->get(2),
-startLong=$cities->get(1)->second->get(1),
-endLat=$cities->get(10)->second->get(2),
-endLong=$cities->get(10)->second->get(1),
);
' miles<br><br>\n';
Source Code
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including the complete documentation and sample usage shown
on this page. Place the downloaded ".inc" file in your
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tag immediately.
