This is the code I am using
/**
* Calculates distance between Latitude/Longitude points using haversine formula.
*
* @param lat1 latitude of first point (Required)
* @param lon1 longitude of first point (Required)
* @param lat2 latitude of second point (Required)
* @param lon2 longitude of second point (Required)
* @param units Units for return value. Default is miles. (Optional)
* @return Returns numeric distance between the two points. Units varies,
default is miles.
* @author Henry Ho (henryho...@gmail.com)
* @version 0, January 8, 2013
*/
function getDistance(lat1, lon1, lat2, lon2, units = 'miles')
{
// earth's radius. Default is miles.
var radius = 3959;
if (arguments.units EQ 'kilometers' )
radius = 6371;
else if (arguments.units EQ 'feet')
radius = 20903520;
var toRad = pi() / 180;
var dLat = (lat2-lat1) * toRad;
var dLon = (lon2-lon1) * toRad;
var a = sin(dLat/2)^2 + cos(lat1 * toRad) * cos(lat2 * toRad) *
sin(dLon/2)^2;
var c = 2 * createObject("java","java.lang.Math").atan2(sqr(a),
sqr(1-a));
return radius * c;
}
Its wrapped inside a cfloop as I need to validate code received into our portal
from mobile devices against data stored in the database hence the need to look
around the data records from the query as often there will be more than 1
records to test against
NB: TrackingCentral is now a registered product & services provider for the
National Disability Insurance Scheme, under the category of Assisted Technology
Regards
Claude Raiola
Director
TrackingCentral Pty. Ltd
Free Call 1300 255 990
From: cfaussie@googlegroups.com [mailto:cfaussie@googlegroups.com] On Behalf Of
Charlie Arehart
Sent: Thursday, 26 March 2015 1:26 PM
To: cfaussie@googlegroups.com
Subject: RE: [cfaussie] Help With Dynamic Naming A CfScript Function
Right, but why do you need the name of the function to be dynamic? Why isn’t it
enough that you pass in args within the loop (and declare the function outside
of it)?
/charlie
From: cfaussie@googlegroups.com <mailto:cfaussie@googlegroups.com>
[mailto:cfaussie@googlegroups.com] On Behalf Of rai...@ozemail.com.au
<mailto:rai...@ozemail.com.au>
Sent: Wednesday, March 25, 2015 11:14 PM
To: cfaussie@googlegroups.com <mailto:cfaussie@googlegroups.com>
Subject: RE: [cfaussie] Help With Dynamic Naming A CfScript Function
I am calculating distance between 2 sets of lon / lat and the information is
dynamic so I need to capture the values of the dynamic data and compare them to
the values stored in a database table of which there may been to be several
records tested against the values in the dynamic data
Eg 1 set of co ordinate received from a device in the field data is received by
the listener and needs to be tested against co ordinates recorded in the
database table of which there may be several records needing to be tested
against hence the need for the loop
Regards
Claude Raiola
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