| 1 | /** |
| 2 | * @license |
| 3 | * Copyright 2013 David Eberlein (david.eberlein@ch.sauter-bc.com) |
| 4 | * MIT-licensed (http://opensource.org/licenses/MIT) |
| 5 | */ |
| 6 | |
| 7 | /** |
| 8 | * @fileoverview DataHandler base implementation for the "bar" |
| 9 | * data formats. This implementation must be extended and the |
| 10 | * extractSeries and rollingAverage must be implemented. |
| 11 | * @author David Eberlein (david.eberlein@ch.sauter-bc.com) |
| 12 | */ |
| 13 | |
| 14 | (function() { |
| 15 | |
| 16 | /*global Dygraph:false */ |
| 17 | /*global DygraphLayout:false */ |
| 18 | "use strict"; |
| 19 | |
| 20 | Dygraph.DataHandlers.BarsHandler = Dygraph.DataHandler(); |
| 21 | var BarsHandler = Dygraph.DataHandlers.BarsHandler; |
| 22 | |
| 23 | // errorBars |
| 24 | BarsHandler.prototype.extractSeries = function(rawData, i, options) { |
| 25 | // Not implemented here must be extended |
| 26 | }; |
| 27 | |
| 28 | BarsHandler.prototype.rollingAverage = |
| 29 | function(originalData, rollPeriod, options) { |
| 30 | // Not implemented here, must be extended. |
| 31 | }; |
| 32 | |
| 33 | BarsHandler.prototype.onPointsCreated_ = function(series, points) { |
| 34 | for (var i = 0; i < series.length; ++i) { |
| 35 | var item = series[i]; |
| 36 | var point = points[i]; |
| 37 | point.y_top = NaN; |
| 38 | point.y_bottom = NaN; |
| 39 | point.yval_minus = DygraphLayout.parseFloat_(item[2][0]); |
| 40 | point.yval_plus = DygraphLayout.parseFloat_(item[2][1]); |
| 41 | } |
| 42 | }; |
| 43 | |
| 44 | BarsHandler.prototype.getExtremeYValues = function(series, dateWindow, options) { |
| 45 | var minY = null, maxY = null, y; |
| 46 | |
| 47 | var firstIdx = 0; |
| 48 | var lastIdx = series.length - 1; |
| 49 | |
| 50 | for ( var j = firstIdx; j <= lastIdx; j++) { |
| 51 | y = series[j][1]; |
| 52 | if (y === null || isNaN(y)) continue; |
| 53 | |
| 54 | var low = series[j][2][0]; |
| 55 | var high = series[j][2][1]; |
| 56 | |
| 57 | if (low > y) low = y; // this can happen with custom bars, |
| 58 | if (high < y) high = y; // e.g. in tests/custom-bars.html |
| 59 | |
| 60 | if (maxY === null || high > maxY) maxY = high; |
| 61 | if (minY === null || low < minY) minY = low; |
| 62 | } |
| 63 | |
| 64 | return [ minY, maxY ]; |
| 65 | }; |
| 66 | |
| 67 | BarsHandler.prototype.onLineEvaluated = function(points, axis, logscale) { |
| 68 | var point; |
| 69 | for (var j = 0; j < points.length; j++) { |
| 70 | // Copy over the error terms |
| 71 | point = points[j]; |
| 72 | point.y_top = DygraphLayout._calcYNormal(axis, point.yval_minus, logscale); |
| 73 | point.y_bottom = DygraphLayout._calcYNormal(axis, point.yval_plus, logscale); |
| 74 | } |
| 75 | }; |
| 76 | |
| 77 | })(); |