OpenFlutter / K_chart
Licence: bsd-2-clause
Maybe it is the best k chart in Flutter.
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k_chart
Maybe this is the best k chart in Flutter.Support drag,scale,long press,fling.And easy to use.
Getting Started
Install
dependencies:
k_chart: ^0.1.1
or use latest:
k_chart:
git:
url: https://github.com/mafanwei/k_chart
Usage
When you change the data, you must call this:
DataUtil.calculate(datas); //This function has some optional parameters: n is BOLL N-day closing price. k is BOLL param.
use k line chart:
Container(
height: 450,
width: double.infinity,
child: KChartWidget(
datas,// Required,Data must be an ordered list,(history=>now)
isLine: isLine,// Decide whether it is k-line or time-sharing
mainState: _mainState,// Decide what the main view shows
secondaryState: _secondaryState,// Decide what the sub view shows
fixedLength: 2,// Displayed decimal precision
timeFormat: TimeFormat.YEAR_MONTH_DAY,
onLoadMore: (bool a) {},// Called when the data scrolls to the end. When a is true, it means the user is pulled to the end of the right side of the data. When a
// is false, it means the user is pulled to the end of the left side of the data.
maDayList: [5,10,20],// Display of MA,This parameter must be equal to DataUtil.calculate‘s maDayList
bgColor: [Colors.black, Colors.black],// The background color of the chart is gradient
isChinese: true,// Graphic language
volHidden: false,// hide volume
isOnDrag: (isDrag){},// true is on Drag.Don't load data while Draging.
),
),
use depth chart:
DepthChart(_bids, _asks) //Note: Datas must be an ordered list,
if you want change DepthChart color, you can use just like this:
Container(
height: 230,
width: double.infinity,
color: Colors.grey, //background color
child: DepthChart(_bids, _asks,buyPathColor: Colors.blue, sellPathColor: Colors.green),
)
Donate
Buy a cup of coffee for the author.
Other
Maybe there are some bugs in this k chart,or you want new indicators,you can create a pull request.I will happy to accept it and I hope we can make it better.
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