+++ /dev/null
-/**
- * @license
- * Copyright 2013 David Eberlein (david.eberlein@ch.sauter-bc.com)
- * MIT-licensed (http://opensource.org/licenses/MIT)
- */
-
-/**
- * @fileoverview DataHandler implementation for the custom bars option.
- * @author David Eberlein (david.eberlein@ch.sauter-bc.com)
- */
-
-(function() {
-
-/*global Dygraph:false */
-"use strict";
-
-/**
- * @constructor
- * @extends Dygraph.DataHandlers.BarsHandler
- */
-Dygraph.DataHandlers.CustomBarsHandler = function() {
-};
-
-var CustomBarsHandler = Dygraph.DataHandlers.CustomBarsHandler;
-CustomBarsHandler.prototype = new Dygraph.DataHandlers.BarsHandler();
-
-/** @inheritDoc */
-CustomBarsHandler.prototype.extractSeries = function(rawData, i, options) {
- // TODO(danvk): pre-allocate series here.
- var series = [];
- var x, y, point;
- var logScale = options.get('logscale');
- for ( var j = 0; j < rawData.length; j++) {
- x = rawData[j][0];
- point = rawData[j][i];
- if (logScale && point !== null) {
- // On the log scale, points less than zero do not exist.
- // This will create a gap in the chart.
- if (point[0] <= 0 || point[1] <= 0 || point[2] <= 0) {
- point = null;
- }
- }
- // Extract to the unified data format.
- if (point !== null) {
- y = point[1];
- if (y !== null && !isNaN(y)) {
- series.push([ x, y, [ point[0], point[2] ] ]);
- } else {
- series.push([ x, y, [ y, y ] ]);
- }
- } else {
- series.push([ x, null, [ null, null ] ]);
- }
- }
- return series;
-};
-
-/** @inheritDoc */
-CustomBarsHandler.prototype.rollingAverage =
- function(originalData, rollPeriod, options) {
- rollPeriod = Math.min(rollPeriod, originalData.length);
- var rollingData = [];
- var y, low, high, mid,count, i, extremes;
-
- low = 0;
- mid = 0;
- high = 0;
- count = 0;
- for (i = 0; i < originalData.length; i++) {
- y = originalData[i][1];
- extremes = originalData[i][2];
- rollingData[i] = originalData[i];
-
- if (y !== null && !isNaN(y)) {
- low += extremes[0];
- mid += y;
- high += extremes[1];
- count += 1;
- }
- if (i - rollPeriod >= 0) {
- var prev = originalData[i - rollPeriod];
- if (prev[1] !== null && !isNaN(prev[1])) {
- low -= prev[2][0];
- mid -= prev[1];
- high -= prev[2][1];
- count -= 1;
- }
- }
- if (count) {
- rollingData[i] = [
- originalData[i][0],
- 1.0 * mid / count,
- [ 1.0 * low / count,
- 1.0 * high / count ] ];
- } else {
- rollingData[i] = [ originalData[i][0], null, [ null, null ] ];
- }
- }
-
- return rollingData;
-};
-
-})();