html/scripts/highchart/modules/heatmap.src.js
function (value, point) {
		var pos,
			stops = this.stops,
			from,
			to,
			color,
			dataClasses = this.dataClasses,
			dataClass,
			i;

		if (dataClasses) {
			i = dataClasses.length;
			while (i--) {
				dataClass = dataClasses[i];
				from = dataClass.from;
				to = dataClass.to;
				if ((from === UNDEFINED || value >= from) && (to === UNDEFINED || value <= to)) {
					color = dataClass.color;
					if (point) {
						point.dataClass = i;
					}
					break;
				}	
			}

		} else {

			if (this.isLog) {
				value = this.val2lin(value);
			}
			pos = 1 - ((this.max - value) / ((this.max - this.min) || 1));
			i = stops.length;
			while (i--) {
				if (pos > stops[i][0]) {
					break;
				}
			}
			from = stops[i] || stops[i + 1];
			to = stops[i + 1] || from;

			// The position within the gradient
			pos = 1 - (to[0] - pos) / ((to[0] - from[0]) || 1);

			color = this.tweenColors(
				from.color, 
				to.color,
				pos
			);
		}
		return color;
	}
function (value, point) {
		var pos,
			stops = this.stops,
			from,
			to,
			color,
			dataClasses = this.dataClasses,
			dataClass,
			i;

		if (dataClasses) {
			i = dataClasses.length;
			while (i--) {
				dataClass = dataClasses[i];
				from = dataClass.from;
				to = dataClass.to;
				if ((from === UNDEFINED || value >= from) && (to === UNDEFINED || value <= to)) {
					color = dataClass.color;
					if (point) {
						point.dataClass = i;
					}
					break;
				}	
			}

		} else {

			if (this.isLog) {
				value = this.val2lin(value);
			}
			pos = 1 - ((this.max - value) / ((this.max - this.min) || 1));
			i = stops.length;
			while (i--) {
				if (pos > stops[i][0]) {
					break;
				}
			}
			from = stops[i] || stops[i + 1];
			to = stops[i + 1] || from;

			// The position within the gradient
			pos = 1 - (to[0] - pos) / ((to[0] - from[0]) || 1);

			color = this.tweenColors(
				from.color, 
				to.color,
				pos
			);
		}
		return color;
	}
function ( value , point ) { var pos , stops = this . stops , from , to , color , dataClasses = this . dataClasses , dataClass , i ; if ( dataClasses ) { i = dataClasses . length ; while ( i -- ) { dataClass = dataClasses [ i ] ; from = dataClass . from ; to = dataClass . to ; if ( ( from === UNDEFINED || value >= from ) && ( to === UNDEFINED || value <= to ) ) { color = dataClass . color ; if ( point ) { point . dataClass = i ; } break ; } } } else { if ( this . isLog ) { value = this . val2lin ( value ) ; } pos = 1 - ( ( this . max - value ) / ( ( this . max - this . min ) || 1 ) ) ; i = stops . length ; while ( i -- ) { if ( pos > stops [ i ] [ 0 ] ) { break ; } } from = stops [ i ] || stops [ i + 1 ] ; to = stops [ i + 1 ] || from ; // The position within the gradient pos = 1 - ( to [ 0 ] - pos ) / ( ( to [ 0 ] - from [ 0 ] ) || 1 ) ; color = this . tweenColors ( from . color , to . color , pos ) ; } return color ; }
Translate from a value to a color
Translate from a value to a color