/*	Copyright (c) 2004-2006, The Dojo Foundation	All Rights Reserved.	Licensed under the Academic Free License version 2.1 or above OR the	modified BSD license. For more information on Dojo licensing, see:		http://dojotoolkit.org/community/licensing.shtml*/dojo.provide("dojo.charting.Series");dojo.require("dojo.lang.common");dojo.require("dojo.charting.Plotters");dojo.charting.Series = function (kwArgs) {	var args = kwArgs || {length:1};	this.dataSource = args.dataSource || null;	this.bindings = {};	this.color = args.color;	this.label = args.label;	if (args.bindings) {		for (var p in args.bindings) {			this.addBinding(p, args.bindings[p]);		}	}};dojo.extend(dojo.charting.Series, {bind:function (src, bindings) {	this.dataSource = src;	this.bindings = bindings;}, addBinding:function (name, binding) {	this.bindings[name] = binding;}, evaluate:function (kwArgs) {	var ret = [];	var a = this.dataSource.getData();	var l = a.length;	var start = 0;	var end = l;	if (kwArgs) {		if (kwArgs.between) {			for (var i = 0; i < l; i++) {				var fld = this.dataSource.getField(a[i], kwArgs.between.field);				if (fld >= kwArgs.between.low && fld <= kwArgs.between.high) {					var o = {src:a[i], series:this};					for (var p in this.bindings) {						o[p] = this.dataSource.getField(a[i], this.bindings[p]);					}					ret.push(o);				}			}		} else {			if (kwArgs.from || kwArgs.length) {				if (kwArgs.from) {					start = Math.max(kwArgs.from, 0);					if (kwArgs.to) {						end = Math.min(kwArgs.to, end);					}				} else {					if (kwArgs.length < 0) {						start = Math.max((end + length), 0);					} else {						end = Math.min((start + length), end);					}				}				for (var i = start; i < end; i++) {					var o = {src:a[i], series:this};					for (var p in this.bindings) {						o[p] = this.dataSource.getField(a[i], this.bindings[p]);					}					ret.push(o);				}			}		}	} else {		for (var i = start; i < end; i++) {			var o = {src:a[i], series:this};			for (var p in this.bindings) {				o[p] = this.dataSource.getField(a[i], this.bindings[p]);			}			ret.push(o);		}	}	if (ret.length > 0 && typeof (ret[0].x) != "undefined") {		ret.sort(function (a, b) {			if (a.x > b.x) {				return 1;			}			if (a.x < b.x) {				return -1;			}			return 0;		});	}	return ret;}, trends:{createRange:function (values, len) {	var idx = values.length - 1;	var length = (len || values.length);	return {"index":idx, "length":length, "start":Math.max(idx - length, 0)};}, mean:function (values, len) {	var range = this.createRange(values, len);	if (range.index < 0) {		return 0;	}	var total = 0;	var count = 0;	for (var i = range.index; i >= range.start; i--) {		total += values[i].y;		count++;	}	total /= Math.max(count, 1);	return total;}, variance:function (values, len) {	var range = this.createRange(values, len);	if (range.index < 0) {		return 0;	}	var total = 0;	var square = 0;	var count = 0;	for (var i = range.index; i >= range.start; i--) {		total += values[i].y;		square += Math.pow(values[i].y, 2);		count++;	}	return (square / count) - Math.pow(total / count, 2);}, standardDeviation:function (values, len) {	return Math.sqrt(this.getVariance(values, len));}, max:function (values, len) {	var range = this.createRange(values, len);	if (range.index < 0) {		return 0;	}	var max = Number.MIN_VALUE;	for (var i = range.index; i >= range.start; i--) {		max = Math.max(values[i].y, max);	}	return max;}, min:function (values, len) {	var range = this.createRange(values, len);	if (range.index < 0) {		return 0;	}	var min = Number.MAX_VALUE;	for (var i = range.index; i >= range.start; i--) {		min = Math.min(values[i].y, min);	}	return min;}, median:function (values, len) {	var range = this.createRange(values, len);	if (range.index < 0) {		return 0;	}	var a = [];	for (var i = range.index; i >= range.start; i--) {		var b = false;		for (var j = 0; j < a.length; j++) {			if (values[i].y == a[j]) {				b = true;				break;			}		}		if (!b) {			a.push(values[i].y);		}	}	a.sort();	if (a.length > 0) {		return a[Math.ceil(a.length / 2)];	}	return 0;}, mode:function (values, len) {	var range = this.createRange(values, len);	if (range.index < 0) {		return 0;	}	var o = {};	var ret = 0;	var median = Number.MIN_VALUE;	for (var i = range.index; i >= range.start; i--) {		if (!o[values[i].y]) {			o[values[i].y] = 1;		} else {			o[values[i].y]++;		}	}	for (var p in o) {		if (median < o[p]) {			median = o[p];			ret = p;		}	}	return ret;}}});