| javascript Programming Glossary: math.sinWhat does = +_ mean in JavaScript http://stackoverflow.com/questions/15129137/what-does-mean-in-javascript  function _ if arguments.length return r r _ dx r 2 Math.sin Math.PI 3 dy r 1.5 return hexbin   javascript operators   share.. 
 Resizing an image in an HTML5 canvas http://stackoverflow.com/questions/2303690/resizing-an-image-in-an-html5-canvas  Math.PI if Math.abs x 1e 16 return 1 var xx x lobes return Math.sin x Math.sin xx x xx elem canvas element img image element sx.. Math.abs x 1e 16 return 1 var xx x lobes return Math.sin x Math.sin xx x xx elem canvas element img image element sx scaled width.. 
 How to calculate the latlng of a point a certain distance away from another? http://stackoverflow.com/questions/2637023/how-to-calculate-the-latlng-of-a-point-a-certain-distance-away-from-another  this.lat .toRad lon1 this.lng .toRad var lat2 Math.asin Math.sin lat1 Math.cos dist  Math.cos lat1 Math.sin dist Math.cos brng.. lat2 Math.asin Math.sin lat1 Math.cos dist  Math.cos lat1 Math.sin dist Math.cos brng var lon2 lon1 Math.atan2 Math.sin brng Math.sin.. lat1 Math.sin dist Math.cos brng var lon2 lon1 Math.atan2 Math.sin brng Math.sin dist   Math.cos lat1   Math.cos dist Math.sin.. 
 Baking transforms into SVG Path Element commands http://stackoverflow.com/questions/5149301/baking-transforms-into-svg-path-element-commands  Math.PI 180 deg rad rot a_offsetrot s parseFloat Math.sin rot c parseFloat Math.cos rot build ellipse representation matrix.. 
 toRad() javascript function throwing error http://stackoverflow.com/questions/5260423/torad-javascript-function-throwing-error  functions in radians var dLon lon2 lon1 .toRad var a Math.sin dLat 2 Math.sin dLat 2 Math.cos lat1.toRad Math.cos lat2.toRad.. in radians var dLon lon2 lon1 .toRad var a Math.sin dLat 2 Math.sin dLat 2 Math.cos lat1.toRad Math.cos lat2.toRad Math.sin dLon.. 2 Math.sin dLat 2 Math.cos lat1.toRad Math.cos lat2.toRad Math.sin dLon 2 Math.sin dLon 2 var c 2 Math.atan2 Math.sqrt a Math.sqrt.. 
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