[Fix] Optimize layout and bar width of
bar series on
time axis and
value axis. Make the
barMaxWidth has higher priority than
bar series on
time axis and
value axis. #11479 (Wenli Zhang, Shuang Su)
[Fix] Fix gradient on bar leaked to label in SVG Renderer. (Wenli Zhang)
[Feature] Add option
custom series, which prevents the shapes overflow the area of the coordinate system. And support setting
toolbox.dataZoom. Fix #9200, #10224, #10748, #11086.
[Feature] Support “select all” and “reverse select” buttons in
legend.selector for details.
echarts.graphic.getShapeClass. The registered shape classes can be used in
custom series and
[Feature] Support show border style on
legend item. Support setting
legend. Fix #7340.
[Feature] Support expansion animation for data update, support
pie-series.animationTypeUpdate. Fix #11029.
[Feature] Support setting
[Feature] Support using BaiduMap API version 3.0 in bmap by option
[Fix] Fix that the stacked bar exceed zoom limit. Fix #7534, #7672, #7732, #7872, #8069, #8520, #8935, #8955, #9200, #9237, #9847, #10359, #10518, #10972.
[Fix] Fix that sometimes when using “toolbox dataZoom” it can not return to the original state. Fix #11055.
[Fix] Fix the texture pattern rendering in
geo. And Fix that the the shadow of them are different between canvas renderer and SVG renderer. Fix #11055, #5429.
[Fix] Fix that data does not rendered after a
NaN value in candlestick. Fix #11101.
geo.label.formatter does not work. Fix #8489.
[Fix] Fix the hover style incorrect in
custom series. Fix #11103.
[Fix] Fix that tree root node disappears after roaming. Fix #10291, #10986, #10164, #9580, #9256, #9216.
[Fix] Fix that SVG renderer should render normally despite hover layer set. Fix #11054.
[Fix] Add dispose checking for chart instance.
[Feature] Sankey diagram enhancement: Add left/right node align, right in sankey diagram. Support user to specify the depth of the node. Enhance sankey node tooltip formatter. Add depth layout info for each node.
[Feature] Support callback in
series.symbol. Contributed by PR #9664 originally.
[Feature] Enhance Pie chart: Support
minShowLabelAngle. Contributed by PR #8997 originally. Support label rotate in pie chart. Fix #10045.
backgroundColor for connected charts in toolbox.
toolbox.feature.saveAsImage.connectedBackgroundColor can be used to set the background color. Fix #10099.
[Feature] Enhance toolbox: Enable to set text style of toolbox. Support tooltip for toolbox. Fix #10202.
[Feature] Enhance dataZoom: Normalize illegal range setting and get accurate
encode info to callback parameters of formatters. Fix #10248 and Close #10250.
[Feature] Funnel enhancement:
series.label.position support to set
leftBottom. And fix style in funnel text position.
[Fix] Support mouse event in iOS when css transform used. Fix #9434, #8326, #5009, #5921.
[Fix] Use a clearer warning message when initing dom without size. Fix #10478.
[Fix] Fix that the rgba opacity does not work in SVG renderer. Fix #9014
[Fix] Enhance funnel chart label display policy PR #8759
[Fix] Fix the highlight/downplay of pie graphic.
[Fix] Fix the mouse pointer in force graph. Fix #7764, contributed by PR #9134.
[Fix] Fix that
opacity does not work in
series[i]-graph.categories[i]. Fix #8009 and #5969, contributed by PR #9171.
[Fix] Fix that
axisLine.show does not work in the gauge. Fix #9194, contributed by PR #9195.
[Fix] Fix a display error when the first data item is ‘-’ in radar. Fix 8962.
[Fix] Fix polygon rendering bug when the first value is
NaN. Fix #8962, contributed by PR #9162.
[Fix] Fix text truncate bug in treemap when using SVG renderer.
[Fix] Fix that
label.rotate does not work in graph. Fix #9182, contributed by PR #9210.
[Fix] Fix the rich content hiding bug and confine bug in tooltip. Fix ecomfe/echarts-for-weixin#360, ecomfe/echarts-for-weixin#347.
[Fix] Fix that callback function params.color is incorrect in sunburst area. Fix #8952, contributed by PR #9238.
[Fix] Fix that when
axisLabel.interval of a category axis is set as
0, all labels are displayed regardless of overlap. Fix #9589.
[Fix] Fix sub-pixel in markLine. Move subPixelOptimize to zrender. Fix #9598.
[Fix] Fix that when doing clear on click handler error is thrown. Fix #9649.
[Fix] Fix that
false value in data items effect subsequent items in
visualMap. Fix #8799.
downplay API. Support keep highlighted when changing style (e.g.,
hoverLink). Fix the highlight conflict.
[Fix] Fix radar line disappear on hover when there is empty value in data.
[Fix] Fix that geo map panning not working on Edge browser. Fix #9479.
[Fix] Fix map label bugs: Fix map rich label missing when missing data. Fix map label miss to enter formatter when missing data. Fix #9682.
triggerEvent for label of
angleAxis. Fix #9765.
[Fix] Fix that the hover style bugs of graph: Fix that the hover style is disabled by
focusNodeAdjacency in graph. Fix that the line label can not be returned to its original opacity after
[Fix] Lift the axis line arrow over splitLine and tick.
[Fix] Fix that the scrollable legend pager does not work when the target index is illegal. Fix #7568.
[Fix] Exclude padding from tooltip position, since it's included in clientWidth. Contributed by PR #9750.
barWidth calculation when stack on multiple polars. Fix #9626.
[Fix] Loop to find the first non-NaN angle for clipPath in pie.
[Fix] Fix line width in singleAxis. Fix #9965.
[Fix] Fix the label bounding rect calculation error when
rich used (e.g., containLabel: true while axisLabel has rich).
[Fix] Part of emphasis in sunburst do not work. Fix #9563, constributed by PR #9993.
pieselectchanged. Fix #9830.
[Fix] Fix that axis name align does not work. Fix #9901.
[Fix] Fix taht the strange label position when the pie chart series data value is
null. Fix #10088.
[Fix] Do not create an anchor element if you don't need to in
SaveAsImage. Contributed by PR #10132.
[Fix] Fix that
axisLabel dost not display correctly in radar. Fix #9282, contributed by PR #10036.
[Fix] Fix that bar chart is abnormal when
dataZoom is ‘empty’. Fix #9882.
series.label.formatter callback bug. Fix #10248, contributed by PR #10250.
[Fix] Fix that the last axis labels are duplicated. Fix #10304.
[Fix] Fix that setting
solid dose not work. Fix #9704, close #10129.
[Fix] Fix that if some negetive numbers or strings existing in the dimensions array, the corresponding line will not show. Fix #10343.
[Fix] Fix that when
'0' existing in dimentions the chart do not work. Make backward compat when dimention is a number-like string. Fix #9363, contributed by PR #9388.
[Fix] Fix hover style on
textStroke bug in custom series.
[Fix] Fix graph bug when data is number typed. Fix #10485.
[Fix] Fix that
axisPointer label padding does not work. Fix #10569.
dimIndex for callback formatter in radar. Close #10403, #10180, contributed PR #10437.
[Fix] Prevent treamap from using hover layer by default. Fix #10521. Ref #10635.
[Fix] Update pointer when type is none. Fix #10570.
[Fix] Enhance circular layout: based on symbol size and fix overlap when some value are very smaller than the max value. Fix #10462, Close #10615.
[Fix] Support click and tooltip in bar large mode. Fix #10699.
[Fix] Fix that in some case re-
setOption in event handler throws error. See #9649.
[Fix] Fix that geo region problem causes
showTip abnormal. See #9156.
[Fix] Fix that stacked bars are over cartesian in some cases. See #9346.
[Fix] Fix that the centered pie label might has some bias on some angles. See #9657.
[Fix] Fix that Geo map panning is not working on MS Edge browser See #9479.
[Fix] Fix that label dispaly problem in map series. See #9682.
[Fix] Fix that
visualMap: false set on data items makes subsequent items abnormal. See #8799.
axisLabel.interval of a category axis is set as
0, all labels show regardless of overlap. See #9589.
[Fix] Fix grid(cartesian) did not render when both containLabel and axisLabel.rich used.
[Fix] Fix license statement.
[Fix] Fix rich text boundingRect bug.
Fix the problem that bar progressive was blocked.
[Feature] Support non-html tooltip, which enable show tooltip on non-html environment, for example, WeChat Mini App. Use tooltip.renderMode to enable this feature.
[Feature] Support event filtering, which enable listen event triggered by specified component, series, data items. See chart.on for details, where a new parameter
query provided this feature. Support event listening for custom series and graphic component, where specified events from the specified graphic elements can be listened by the
[Feature] Support roam for tree diagram. See series-tree.roam.
[Feature] Enable to set an axis as
-1 in encode for custom series, which indicates that the axis and its corresponding dataZoom do not control any dimension of the series (either calculate axis extent by this series nor scale or filter this series). See Gantt example.
[Feature] Enhance custom series: Added params.actionType, enables some optimize. And addparams.coordSys.zoom for geo coordinate system. Add invisible and ignore to enable show and hide graphic elements in different situation.
[Fix] Fix polar category axis interval bug. See #8791.
[Fix] Do not support set polar center on series. Center should be set on polar.center.
[Fix] Fix bar start position when multiple axes exists. See #8747.
[Fix] Remove clipPath for expansion animation. See #8994.
[Fix] Fix axes overlap when two Y axes are on one X axis. See #8975.
[Feature] Enable candlestick and bar chart rendering and zooming in a large amount of data (200K). Add option series-candlestick.progressiveChunkMode to enhance the effect when progressively rendering. See example candlestick-large.
[Feature] Support keeping-aspect for legend path. #7831
[Feature] Support node dragging for sankey chart. See example sankey-energy.
[Enhance] Category axis enhancement:
[Enhance] In line chart, enhance symbol display strategy when using category axis (see
[Enhance] Support that lift the brushed elements to the top (add option
[Enhance] Enhance sampling performance in progressive mode.
[Enhance] Enhance parallel performance in progressive mode.
[Enhance] Currently do not filter empty data item in data zoom, which makes line chart keeping broken. #7955
[Enhance] Support toolbox.feature merge.
yAxis extent did not update when some of the stacked bar series hide. #8003
[Fix] Currently we fetch name from
dateItem.name firstly in list. #7966
[Fix] Typed array incorrect usage in WeChat app.
option in axis data item did not work. #7954
markArea only displayed the last one. #7902
[Fix] Fixed the WeChat environment imprecise detection.
[Fix] Rounding error in clip symbol for line chart. #7913
[Fix] The default tooltip in candlestick only showed one item. #8149
[Fix] Bar chart start point was incorrect when multiple axes exist. #7412
markArea did not display when using ordinal string. #7849
dataZoom threw error when series was empty. #7666
[Fix] Add compatibility of data exceptions for sankey series. #2867
sunburst chart roll-up element was not removed when chart.setOption called. #8132
[Fix] SVG axisPointer text position bug. #7947
[Fix] Large lines chart render bug in large mode.
[Fix] The last day of a month was not displayed in calendar. #8045
[Fix] Data sampling of line chart caused incorrect extent when data had NaN.
[Fix] Data sampling of line chart worked abnormally when using
legendHoverLink: false did not work appropriately when multiple series had the same name. #8010
[Fix] Some of the graph hover style did not work.
[Fix] Fix axis extent calculation error when using stack.
[+] ECharts has been able to work on WeChat Applet.
[^] Fixed shape clip when line chart is overflow cartesian area.
[^] Fixed that apendData caused series color changed if series name was not specified.
[^] Fixed the textStyle compatibility logic.
[^] Fixed that in some case the scollable legend (
legend.type: 'scroll') caused ghost. See #7502.
[+] Supported to render up to tens millions of data directly. ECharts4 has upgrade to stream architecture, and along with detailed optimization, it has supported to render incrementally loaded data and support progressive rendering.
[+] Published ZRender SVG Rendering Engine as an alternative backend of ECharts besides the existing Canvas Rendering Engine. The choice of rendering engine usually depends on the scenario, for example, benefit from the low memory cost, SVG Rendering Engine is suitable for mobile device, or the case that many ECharts instances exists in a single page, while the Canvas Rendering Engine is suitable for big data rendering or when visual effects required. Canvas Rendering Engine is default rendering engine. See zrender.
[+] Published Sunburst Chart to visualize hierarchical data efficiently with excellent interactions. See [examples] and (excellent) and docs.
[+] Published dataset component to support data based configuration, visual encoding and data sharing in different series.
[+] Supported WAI-ARIA (the Accessible Rich Internet Applications Suite） to help the disabled people to access the data visualization in web.
[+] Since ECharts4, the options
itemStyle has been flattened. The original level of
normal is not needed any more, which make ECharts option more neat. As always, The previous option style in ECharts3 is still be compatible.
[+] Added two color themes, named ‘light’ and ‘dark’. Apply them by
[+] Supported that auto collect legend names when legend.data is not specified.
[+] Supported that auto collect category names when
'category' and axis.data is not specified.
registerMapis null on
3.8.0, the content in
libdirectory is the same as the content in
srcdirectory (both are ES Module), which may not compatible with the old verisons of node and webpack. So rollback to commonJS format in
3.8.0, the source code in
srcconstains global variable
__DEV__(which prints dev helper info for echarts users). To get the declaration of the global variable, users should include
echarts/src/config.jsmanually or make some settings in
rollup(Check custom build tutorial please), which is not backward compatible. So we have removed
__DEV__from the codes in
3.8.2. If dev helper info is required, use codes in
echarts/src/echarts.js(the same as
3.8.0) does not include util methods, which used to be mounted on it. Now util methods are listed in
echarts/src/exportand mounted on
echarts/echarts*.js. But it is not backward compatibility, so we have rollbacked to mount them on
echarts/extension/dataTool, havs been rollbacked to the original approach before
3.8, where it must be included explicitly, and the namespace will be mounted on
[+] Supported SVG Renderer (beta), enable developers to choose SVG or Canvas renderer based on their platfroms and functional requirments.
[+] Source code of echarts has been switched to ES Module, which enabled tree shaking of bundle and reduced size.
[^] Renamed some variables to avoid webpack special variable name. See #6788.
[^] Fixed that brush empty value caused error thrown. See #6892.
dist/echarts/echarts.simple.js do not includ utils, which used to be mounted on
dist/echarts/echarts.js keep including them as before. And developers can custom build to include them.
dataTool: When using
dist/echarts/extension/dataTool.js should be manually included as before, but the namespace
dataTool will not be mounted to
echarts. When using
echarts.dataTool is included automatically by default.
[+] Supported English version build (All default text is in English) in https://github.com/apache/incubator-echarts/tree/master/dist. See #2321.
[^] Fixed area chart when all value is negative. See #6707.
[^] Made the meaning of
'center' consist in axis.nameLocation.
[^] Fixed that calender did not work because of DST (Day Saving Time). See #6543.
[^] Enhanced the “save as image” in IE. See #6279.
[^] Fixed cleaning for “motion blur”. See #6577.
[^] Fixed the compatibility for
markPoint. See #6503.
[^] Add sub-pixel optimize to candlestick.
[^] Fixed that emphasis style was not applied when using graph.focusNodeAdjacency.
[+] Supported Rich Text, which has enabled style configuring to some text snippets or the entire text block, and supported using images in text, and supported alignment or rotation of text block or snippets.
textStyle exist in echarts option everywhere, for example, series-bar.label.normal.textStyle, xAxis.axisLabel.textStyle. It seems that some of them are to deep and verbose. So we removed the level of
textStyle to flatten them. That is, previous
axisLabel.textStyle.fontSize is modified to
v3.7. Of course, the previous style is compatible all the same. Those options are flattened:
[+] Supported minInterval on time axis (that is, axis.type is
'time'), and supported maxInterval on value axis (that is axis.type is
'value'). So that it is enabled to controll the precision of label when data zooming.
[+] Supported that do not use coordinate system in
[^] Fixed that error thrown when using shadow in pie series in some version of IE. See #5777.
[^] Fixed that name can not be obtained in
nameMap was used in map serise and there was no data in some areas. See #5633.
tooltip location incorrect after roamed in bmap extension. See #6211.
[^] Fixed null pointer exception of
axisPointer. See #6121.
[^] Fixed that error occured when height of heatmap was 0. See #6214.
[^] Fixed that when chilren number of group was not fixed, they could not be removed correctly in custom series.
[^] Fixed the error that calling
setOption called. See #6281.
[^] Fixed that bar series displayed abnormal when viewport was narrow and bar series were overlapped (both set
barGap: '-100%'). See #6312.
[^] Fixed precision problems. See #6371.
[+] Supported specifying mouse cursor style by: series-line.cursor, series-bar.cursor, series-pie.cursor, series-scatter.cursor, series-effectScatter.cursor, series-graph.cursor, series-pictorialBar.cursor.
[^] Fixed only the last
markLine was displayed when
series.name was the same. See #5712.
[+] Supported encode, which enable user to specify which dimensions in data are mapped to which axis of coordinate system. Or which dimensions will be displayed in tooltip or label. [Break Change]: The default name of the third dimension in
cartesian2d is changed from
'z' is used in visualMap.dimension, please modify it to
[+] Supported dataZoom.moveOnMouseMove and dataZoom.zoomOnMouseWheel, which enables that triggering dataZoom only by mouse wheel while holding ‘ctrl’/‘alt’/‘shift’. Moreover, supported preventDefaultMouseMove, See #5769.
[+] Supported using image in dataZoom.handleIcon setting.
[^] Fixed boundary problems on world map.
[^] Fixed problems caused by default properties on
Object. See #5576.
[^] Enhanced interaction of
[^] Fixed the problem when tooltip updating.
clipPathsupport for liquidfill.
labelis set as
[^] Fixed the problem when both
height are set. See #5440.
[^] Made the sorting of treemap stable when values were the same.
[^] Fixed that roam and brush conflicted when components overlaped.
[^] Enlarged area of parallel axis name when it rotates.
[^] Improved the performance of zrender up to
[+] Supported useUTC, which enables display
tooltip in local time or UTC. Related default setttings are modified:
tooltip display local time by default, and
data recognize time string as local time if timezone not specified. See the time part in series.data. Fixed the problem that when
'time' tick is determined by UTC and can not align with daytime. Fixed #5396 and #5393.
[+] Supported funnel.sort, which enables sorting funnel by index or customized function.
[^] Fixed float error of
axisTick. See #5041.
[^] Fixed that
axisTick did not display when value was too small. See #5386.
[+] Published echarts statistics tools echarts-stat
[+] Enhanced axis pointer See examples: link, mobile (touch device) 1, mobile (touch device) 2, analysis, multiple Y axes, multiple X axes. Supported and enhanced #5040, #5039, #5102, #5262, #4905, #4921, #5091.
[+] Enhanced method
echarts.util.parseDate, which have supported parsing different formats of data expression to UTC time. See time in series.data
[^] Enhanced processing of geoJSON.
[^] Fixed function name of “disConnect”. See #5208.
[^] Remove incorrect warning specifying
width,height when initialize echart. See #4569.
Fixed the initialization of series-treemap.data is incorrect in one case.
Enhanced the behavior of brush on category axis.
[+] A specified geo coordinate system has been able to be used in map series. (In the past map series could only creat an inner exclusive geo coodinate system). Thus, map series can be used to control color of a geo component. Moreover, a geo coordinate system can be shared among map series and other series, like scatter series. See series-map.geoIndex.
[+] Added series-pie.animationType, which enables more animation effects.
[+] Callback function have been supported in animationDuration, which enables different animation duration of data items.
[+] category axis has been changed to show all categories by default, in spite of whether there is data in categories. In the past, categories in the end that has no data will not be displayed.
[+] When using singleAxis,
series.data has supported one-dimension array, like
[11, 23, 44].
[+] Exposed throttle util method:
[+] When using visualMap to control a series, it has supported that some data items escape from the control by visualMap, but use its series visual settings (color, symbol, ...). See the paragraph of
Configure mapping in visualMap.
[^] Enhanced the effect of grid (cartesian) when on data displayed.
[^] Added parameter
dataIndex in showTip event.
[^] Fixed vulnerability about XSS in tooltip. See #4769.
[^] Fixed series-radar render error in a case that no data exists.
[+] Add graphic in option, enable graphic configuration in option. See examples: http://echarts.baidu.com/gallery/editor.html?c=line-y-category, http://echarts.baidu.com/gallery/editor.html?c=line-draggable and http://echarts.baidu.com/gallery/editor.html?c=map-province.
[+] Add tooltip.confine, which can confine tooltip within contianer of echarts instance. It helps a lot in small screen, or in the situation that outer dom is set to be
[^] Fix that erroneously forbiden default pan behavior in touch device. See #4393.
[^] Fix symbol mapping in visualMap.
[^] Fix tooltip may not show bug when first series have null data.
echarts.extendSeriesModel error. See #4397.
【+】add in radar chart, see https://ecomfe.github.io/echarts-doc/public/en/option.html#series-radar
[^] fix the only one configuration for ‘‘none’’ bug in markLine symbol. See #2733
[^]optimization of vertically centered multiple yext lines.
[^] emphasis configuration item of label in data item as pie chart is normal value by dafualt.
[^] when introdcued on need, line chart, pie chart and scatter chart introduce grid component by dafault to avoid problems in#2758.
[^] fix floating point precision bug in dataZoom component. Fix #2757
[^] unselected legend chart is grey. See #2615
[^] fix dataZoom position failure bug in media query of 3.1.1. Fix #2710
[^] fix firefox's incapability of triggering wheel events bug in 3.1.1 中. Fix #2730
[^] IE8 optimization.
[^] change to webpack to build code.
【+】provide theme download,see details in http://echarts.baidu.com/download-theme.html
the bug that update data can not be shown in setOption` after emptying line chart data in v3.1.1.
[^] fix possiblity of reporting
id duplicates error in
setOption(chart.getOption()) . Fix #2635
[^] allow to customize toolbox toobar. See details in toolbox.feature
[^] scale optimization of
'time' type axis in large-span time range.
[^] fix no show of label formatter return to 0.Fix #2659
[^] fix markPoint label display error in charts with vertical axis as category axis.Fix #2641
[^] optimize dataZoom, fix dynamic data update problem in dataZoom chart. Fix #2667
[^] percentage is 0 rather than NaN when all pie chart data are zero. Fix #2690
[^] title alignment optimization.
[^] support display of tooltip when charts update. Fix #2478
axisTick.length supports percentage.
[^] optimization of line animation feature.
[^] optimization of category axis feature of large data amount .
[^] fix error reporting bug of markPoint and markLine in IE8.
[^] fix error reporting bug under
'use strict'model. Fix #2643
【+】newly add npm channel to obtain echarts, see details in webpack + echarts tutorial
[^] fix abnormal indynamic markPoint and markLine . Fix #2522
[^] fix parameter error in axis interval callback. Fix #2470
[^] fix failure in customizing lineStyle of every edge in graph. Fix #2558
[^] saveAsImage supports IE9+ and FireFox in toolbox.
[^] support cylindrical corner configuration. #2550
[^] fix error in dataZoom location configuration item. Fix #2619
[^] fix possible
id duplicate error when fix
setOption for too many times.Fix #2452
[^] candlestick and boxplot chart support markPoint and markLine.Fix #2566
[^] fix reset error in toolbox after use
setOption in non-merge model.Fix #2596
[^] scatter chart and markPoint support configurating
emphasis. Fix #2596
[^] Treemap supports
roam configuration item.
[^] axis of time type support time data of string format.
[^] fix switch problem in Line and area charts. Fix #2625
[^] location optimization of multiple series of bar chart markPoint. Fix #2623
[^] fix error reporting in init when theme is string and has dataZoom component. Fix #2619
[^] legend and toolbox support setting height and width and wrap automatically through width and height.Fix #2621
[^] fix incapability to trigger mouse events on computers with touch screen like Surface and so on. Fix #2569
[^] fix highlight failture in scatter chart.
[^] optimize tooltip linkage. Fix #2445
[^] dataZoom of inside type support zoomLock.
[^] add error alert of non-exist map type.
[^] optimize legend switch animation of line chart.
[^] fix problem about Legends cannot be added dynamically. Fix #2457
[^] fix timeline's incapability to configutate show.
[^] fix 0 data shown as undefined in tooltip .Fix #2463
[^] fix incorrect display of dataZoom zoom graphic. Fix #2462
[^] fix the problem of axis
max as string, PR #2481
[^] fix average value, maximum value and minimum vaule label and the incapability to show correct value of tooltip. Fix #2393
[^] fix drawing incorrectness when bar chart has bigger width than height, Fix #2343
[^] fix the function problem of legend
show configuration item. Fix #2371
[^] map type can choose data attribute.
[^] fix average mark and mark calculation errors, Fix #2367
[^] animation optimization when line chart change from
'-' no data to data.
[^] mouse wheel zoom direction change to ommonly used one.
[^] data area zoom tool in toolbar support specified axis, see detail intoolbox document
[^] fix no data error on timeline, scale change from
[-1, 1] to
[0, 1] when data value axis has no data.
[^] fix drawing error of axis splitArea.
[^] fix multiple chart example linkage problem. Fix #2391
[^] fix the problem that color on legend cannot display correctly with pie chart color being callback function. Fix #2372
[^] fix mouse hover errors when pie chart data is 0.
[^] when all pie chart data are 0, secotrs changed to uniform distribution.
[^] fix errors in background seeting under IE 8.
[^] fix incorrect release event in tooltip component dispose.