sunpointed/mpflutterchart

MPAndroidChart Flutter version

mpflutterchart's Issues

how to call onMoveUpdate in controller

hi
how to call onMoveUpdate?
i need get x,y in chart after change Scroll
pls help me

onMoveUpdate afte long press

onMoveUpdate afte long press not working in OtherChartCombined

Line chart gradient fill

In MPAndroidChart it is possible to draw gradient fill in line charts, would you please add this feature too?

how to filter autoScaleMinMaxEnabled in ChartCombined

i need filter autoScaleMinMaxEnabled only for CandleDataSet inside ChartCombined

thank you

如何使用？好像没在https://pub.dev/找到

看起来很不错，flutter中如何使用？在pub.dev仓库中没找到。用https://github.com/SunPointed/mp_flutter_chart.git好像也不对。

add onScrollListener

please add onScrollListener for Controller

LineChart can't hide grid lines

Hello,
I have a problem with hiding grid lines. Here is my widget. Could you help me with this?

_controller.xAxis.enabled=false;
_controller.axisLeft.enabled=false;
_controller.axisRight.enabled=false;
_controller.xAxis.drawGridLines=false;
_controller.axisLeft.drawGridLines=false;
_controller.axisRight.drawGridLines=false;

`
class DynamicLineChart extends StatefulWidget {
List _chartEntryList;
DynamicLineChartConfiguration _configuration;

DynamicLineChart(this._chartEntryList,this._configuration);

@OverRide
State createState() =>_DynamicLineChartState();
}

class _DynamicLineChartState extends State {
LineChartController _controller;

DynamicLineChartConfiguration get _configuration=>widget._configuration;
List get _chartEntryList=>widget._chartEntryList;

@OverRide
void initState() {
var desc = Description()..enabled = false;
_controller = LineChartController(
noDataText: _configuration.noDataText,
drawGridBackground: _configuration.drawGridBackgroud,
dragXEnabled: true,
dragYEnabled: true,
scaleXEnabled: true,
scaleYEnabled: true,
selectionListener: _configuration.selectionListener,
pinchZoomEnabled: true,
drawBorders: true,
backgroundColor: Colors.white,
customViewPortEnabled: true,
description: desc);
_controller.doneBeforePainterInit();
_controller.data = LineData();
super.initState();
}

@OverRide
Widget build(BuildContext context) {
_setEntryList(_chartEntryList);
return LineChart(_controller);
}

void _setEntryList(List values) {
if(values==null || values.length==0) return;
LineDataSet set = new LineDataSet(values, "TODO -> Total: ${values.length}");
set.setLineWidth(_configuration.lineWidth);
set.setCircleRadius(_configuration.circleRadius);
set.setColor1(_configuration.lineColor);
set.setCircleColor(_configuration.circleColor);
set.setHighLightColor(_configuration.highLightColor);
set.setValueTextSize(_configuration.valueTextSize);
set.setValueTextColor(_configuration.valueTextColor);
set.setMode(_configuration.mode);
_controller.data.clearValues();
_controller.data.addDataSet(set);
_controller.setVisibleXRangeMaximum(_configuration.visibleXRangeMaximum);
_controller.moveViewTo(_controller.data.getEntryCount().toDouble(), 0, AxisDependency.LEFT);
_controller.autoScaleMinMaxEnabled=false;
_controller.xAxis.enabled=false;
_controller.axisLeft.enabled=false;
_controller.axisRight.enabled=false;
_controller.xAxis.drawGridLines=false;
_controller.axisLeft.drawGridLines=false;
_controller.axisRight.drawGridLines=false;
_controller.axisLeft.gridColor=Colors.white;
}
}
`

还是柱状图点击显示问题

问题如issues30
我用的是分支localPosition-support这个版本，不是新版，这个版本是因为我用的flutter版本为1.5.4，所以前几个月前让你帮忙弄的分支。
这个版本有解决方法吗？

发现一个问题：如果数据列表中有多个BarEntry的y值是相同的如图1，会出现图2的现象，即有多条相同的横线，请问这种情况如何处理，谢谢

图1：
图2：

[BUGS] setVisibleYRangeMaximum not working

i have max y=1000;

controller.setVisibleYRangeMaximum(100, AxisDependency.LEFT);

not working in Combined Chart

I want set x axis label, like type of '00:00'

LongPress events?

Please consider adding onLongPressStart, onLongPressMoveUpdate, and onLongPressEnd events to OnTouchEventListener.

Because I want to implement like this:
On simple drag => move the chart
On long press drag => move the highlight marker

Gradient in the line from linechart

How can I made a gradient for the line in linechart? (not the fill) in Android is with the paint and shader but I dont know how to set the same in flutter, thanks!

0.1.2版本引入后报错

引用0.1.2包，导入相关类，运行项目，成功。
把项目关闭，idea关闭后再打开，运行工程，结果出现下面这个错误。
把0.1.2注释后，运行项目，成功。
这现象出现过几次，但不确定是否属于我个人的问题。
开发工具：idea。
系统：mac 10.15.2
[✓] Flutter (Channel stable, v1.12.13+hotfix.5, on Mac OS X 10.15.2 19C57, locale zh-Hans-CN)

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
[✓] Xcode - develop for iOS and macOS (Xcode 11.3)
[✓] Android Studio (version 3.5)
[✓] IntelliJ IDEA Ultimate Edition (version 2017.2)
[✓] IntelliJ IDEA Community Edition (version 2019.3.1)
[✓] VS Code (version 1.41.1)
[✓] Connected device (1 available)

• No issues found!

错误信息：

Error output from Xcode build:
↳
** BUILD FAILED **

Xcode's output:
↳
In file included from /Users/kazeik/Documents/flutter/.pub-cache/hosted/pub.flutter-io.cn/fluttertoast-3.1.3/ios/Classes/FluttertoastPlugin.m:2:
/Users/kazeik/Documents/flutter/.pub-cache/hosted/pub.flutter-io.cn/fluttertoast-3.1.3/ios/Classes/UIView+Toast.h:328:19: warning: empty paragraph passed to '@param' command [-Wdocumentation]
@param sharedStyle
~~~~~~~~~~~~~~~~~^
/Users/kazeik/Documents/flutter/.pub-cache/hosted/pub.flutter-io.cn/fluttertoast-3.1.3/ios/Classes/UIView+Toast.h:343:25: warning: empty paragraph passed to '@param' command [-Wdocumentation]
@param allowTapToDismiss
~~~~~~~~~~~~~~~~~~~~~~~^
/Users/kazeik/Documents/flutter/.pub-cache/hosted/pub.flutter-io.cn/fluttertoast-3.1.3/ios/Classes/UIView+Toast.h:343:9: warning: parameter 'allowTapToDismiss' not found in the function declaration [-Wdocumentation]
@param allowTapToDismiss
^~~~~~~~~~~~~~~~~
/Users/kazeik/Documents/flutter/.pub-cache/hosted/pub.flutter-io.cn/fluttertoast-3.1.3/ios/Classes/UIView+Toast.h:343:9: note: did you mean 'tapToDismissEnabled'?
@param allowTapToDismiss
^~~~~~~~~~~~~~~~~
tapToDismissEnabled
/Users/kazeik/Documents/flutter/.pub-cache/hosted/pub.flutter-io.cn/fluttertoast-3.1.3/ios/Classes/UIView+Toast.h:362:20: warning: empty paragraph passed to '@param' command [-Wdocumentation]
@param queueEnabled
~~~~~~~~~~~~~~~~~~^
/Users/kazeik/Documents/flutter/.pub-cache/hosted/pub.flutter-io.cn/fluttertoast-3.1.3/ios/Classes/FluttertoastPlugin.m:19:23: warning: unused variable 'viewController' [-Wunused-variable]
UIViewController *viewController =
^
/Users/kazeik/Documents/flutter/.pub-cache/hosted/pub.flutter-io.cn/fluttertoast-3.1.3/ios/Classes/FluttertoastPlugin.m:70:21: warning: unused variable 'topPadding' [-Wunused-variable]
CGFloat topPadding = window.safeAreaInsets.top;
^
/Users/kazeik/Documents/flutter/.pub-cache/hosted/pub.flutter-io.cn/fluttertoast-3.1.3/ios/Classes/FluttertoastPlugin.m:71:21: warning: unused variable 'bottomPadding' [-Wunused-variable]
CGFloat bottomPadding = window.safeAreaInsets.bottom;
^
/Users/kazeik/Documents/flutter/.pub-cache/hosted/pub.flutter-io.cn/fluttertoast-3.1.3/ios/Classes/FluttertoastPlugin.m:48:19: warning: unused variable 'size' [-Wunused-variable]
NSNumber *size = call.arguments[@"size"];
^
8 warnings generated.
/Users/kazeik/Documents/flutter/.pub-cache/hosted/pub.flutter-io.cn/image_gallery_saver-1.2.2/ios/Classes/ImageGallerySaverPlugin.m:2:9: fatal error: 'image_gallery_saver/image_gallery_saver-Swift.h' file not found
#import <image_gallery_saver/image_gallery_saver-Swift.h>
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
note: Using new build system
note: Planning build
note: Constructing build description
warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 4.3, but the range of supported deployment target versions is 8.0 to 13.2.99. (in target 'FMDB' from project 'Pods')

LineDataSet right to left

If we drag the line from right to left before our chart in OtherChartCombinedState ends, our line will be hidden

VIDEO
https://streamable.com/6dbta

TextPainter.paint called when text geometry was not yet calculated.

Hello everyone , I now create line chart. sorry that I am not strong English. I have some problem which I don't know why my console call "TextPainter.paint called when text geometry was not yet calculated." while i was tapping the chart ,the marker view didn't show also. Does anyone know what to do for fixing?
This is my Code.

class CreateTest{

CreateTest();
Widget returnLineChart() {
var desc = Description()..enabled = false;
var dataPoint = List();
List dataSets = List();
dataPoint.add(Entry(x: 1, y: 2));
dataPoint.add(Entry(x: 2, y: 3));
dataPoint.add(Entry(x: 3, y: 4));
dataPoint.add(Entry(x: 4, y: 5));
dataPoint.add(Entry(x: 5, y: 6));
dataPoint.add(Entry(x: 6, y: 7));
dataPoint.add(Entry(x: 7, y: 8));
dataPoint.add(Entry(x: 8, y: 9));
dataPoint.add(Entry(x: 9, y: 1));
LineDataSet set1;
set1 = LineDataSet(dataPoint, "DataSet 1");
set1.setDrawIcons(false);
set1.enableDashedLine(10, 5, 0);
set1.setColor1(ColorUtils.BLACK);
set1.setCircleColor(ColorUtils.BLACK);
set1.setHighLightColor(ColorUtils.PURPLE);
set1.setLineWidth(1);
set1.setCircleRadius(3);
set1.setDrawCircleHole(false);
set1.setFormLineWidth(1);
set1.setFormLineDashEffect(DashPathEffect(10, 5, 0));
set1.setFormSize(15);
set1.setValueTextSize(9);
set1.enableDashedHighlightLine(10, 5, 0);
set1.setDrawFilled(true);
set1.setFillColor(ColorUtils.FADE_RED_END);
dataSets.add(set1);
var controller = LineChartController(
axisLeftSettingFunction: (axisLeft, controller) {
axisLeft
..drawLimitLineBehindData = true
..enableGridDashedLine(10, 10, 0)
..enableAxisLineDashedLine(5, 5, 0)
..setAxisMaximum(10)
..setAxisMinimum(1);
},
axisRightSettingFunction: (axisRight, controller) {
axisRight.enabled = (false);
},
legendSettingFunction: (legend, controller) {
legend.shape = (LegendForm.LINE);
},
xAxisSettingFunction: (xAxis, controller) {
xAxis
..drawLimitLineBehindData = true
..enableAxisLineDashedLine(5, 5, 0)
..enableGridDashedLine(10, 10, 0);
},
drawGridBackground: false,
backgroundColor: ColorUtils.WHITE,
dragXEnabled: true,
dragYEnabled: true,
scaleXEnabled: true,
scaleYEnabled: true,
pinchZoomEnabled: true,
description: desc);
controller.setViewPortOffsets(16, 16, 16, 16);
controller.data = LineData.fromList(dataSets);
return LineChart(controller);
}

}

Sync the zooming and scrolling of two charts?

I'm trying to implement two charts with same number of data entries: one line chart and one bar chart.

And if one chart is zoomed and scrolled, the other chart is zoomed and scrolled to the same date range as well.

For example:

Is it possible?

how to call chart Scroll Change in MPFlutterChart

How to Call Event Scroll Change in Chart?

zoom in/out multituch

problem to zoom in and out multi touch

HorizontalBarChart Exception

Open the HorizontalBarChart in the example causes an error.

Run build apk

Launching lib/main.dart on SM G965N in debug mode...
Running Gradle task 'assembleDebug'...
E/flutter (25850): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: Stack Overflow
E/flutter (25850): #0 new TextStyle (dart:ui/text.dart:607:3)
E/flutter (25850): #1 TextSpan.build (package:flutter/src/painting/text_span.dart:485:26342)
E/flutter (25850): #2 TextPainter.layout (package:flutter/src/painting/text_painter.dart:544:13)
E/flutter (25850): #3 Legend.getMaximumEntryWidth (package:mp_chart/mp/core/legend/legend.dart:275:50)
E/flutter (25850): #4 Legend.calculateDimensions (package:mp_chart/mp/core/legend/legend.dart:358:21)
E/flutter (25850): #5 LegendRenderer.computeLegend (package:mp_chart/mp/core/render/legend_renderer.dart:180:13)
E/flutter (25850): #6 HorizontalBarChartPainter.calculateOffsets (package:mp_chart/mp/painter/horizontal_bar_chart_painter.dart:147:40)
E/flutter (25850): #7 BarLineChartBasePainter.autoScale (package:mp_chart/mp/painter/bar_line_chart_painter.dart:362:5)
E/flutter (25850): #8 BarLineChartBasePainter.compute (package:mp_chart/mp/painter/bar_line_chart_painter.dart:477:7)
E/flutter (25850): #9 HorizontalBarChartPainter.calculateOffsets (package:mp_chart/mp/painter/horizontal_bar_chart_painter.dart:150:5)
E/flutter (25850): #10 BarLineChartBasePainter.autoScale (package:mp_chart/mp/painter/bar_line_chart_painter.dart:362:5)
E/flutter (25850): #11 BarLineChartBasePainter.compute (package:mp_chart/mp/painter/bar_line_chart_painter.dart:477:7)
E/flutter (25850): #12 HorizontalBarChartPainter.calculateOffsets (package:mp_chart/mp/painter/horizontal_bar_chart_painter.dart:150:5)
E/flutter (25850): #13 BarLineChartBasePainter.autoScale (package:mp_chart/mp/painter/bar_line_chart_painter.dart:362:5)
E/flutter (25850): #14 BarLineChartBasePainter.compute (package:mp_chart/mp/painter/bar_line_chart_painter.dart:477:7)
E/flutter (25850): #15 HorizontalBarChartPainter.calculateOffsets (package:mp_chart/mp/painter/horizontal_bar_chart_painter.dart:150:5)
E/flutter (25850): #16 BarLineChartBasePainter.autoScale (package:mp_chart/mp/painter/bar_line_chart_painter.dart:362:5)
E/flutter (25850): #17 BarLineChartBasePainter.compute (package:mp_chart/mp/painter/bar_line_chart_painter.dart:477:7)
E/flutter (25850): #18 HorizontalBarChartPainter.calculateOffsets (package:mp_chart/mp/painter/horizontal_bar_chart_painter.dart:150:5)
E/flutter (25850): #19 BarLineChartBasePainter.autoScale (package:mp_chart/mp/painter/bar_line_chart_painter.dart:362:5)
E/flutter (25850): #20 BarLineChartBasePainter.compute (package:mp_chart/mp/painter/bar_line_chart_painter.dart:477:7)
E/flutter (25850): #21 HorizontalBarChartPainter.calculateOffsets (package:mp_chart/mp/painter/horizontal_bar_chart_painter.dart:150:5)
E/flutter (25850): #22 BarLineChartBasePainter.autoScale (package:mp_chart/mp/painter/bar_line_chart_painter.dart:362:5)
E/flutter (25850): #23 BarLineChartBasePainter.compute (package:mp_chart/mp/painter/bar_line_chart_painter.dart:477:7)
E/flutter (25850): #24 HorizontalBarChartPainter.calculateOffsets (package:mp_chart/mp/painter/horizontal_bar_chart_painter.dart:150:5)
E/flutter (25850): #25 BarLineChartBasePainter.autoScale (package:mp_chart/mp/painter/bar_line_chart_painter.dart:362:5)
E/flutter (25850): #26 BarLineChartBasePainter.compute (package:mp_chart/mp/painter/bar_line_chart_painter.dart:477:7)
E/flutter (25850): #27 HorizontalBarChartPainter.calculateOffsets (package:mp_chart/mp/painter/horizontal_bar_chart_painter.dart:150:5)
E/flutter (25850): #28 BarLineChartBasePainter.autoScale (package:mp_chart/mp/painter/bar_line_chart_painter.dart:362:5)
E/flutter (25850): #29 BarLineChartBasePainter.compute (package:mp_chart/mp/painter/bar_line_chart_painter.dart:477:7)
E/flutter (25850): #30 HorizontalBarChartPainter.calculateOffsets (package:mp_chart/mp/painter/horizontal_bar_chart_painter.dart:150:5)
E/flutter (25850): #31 BarLineChartBasePainter.autoScale (package:mp_chart/mp/painter/bar_line_chart_painter.dart:362:5)
E/flutter (25850): #32 BarLineChartBasePainter.compute (package:mp_chart/mp/painter/bar_line_chart_painter.dart:477:7)
E/flutter (25850): #33 HorizontalBarChartPainter.calculateOffsets (package:mp_chart/mp/painter/horizontal_bar_chart_painter.dart:150:5)
E/flutter (25850): #34 BarLineChartBasePainter.autoScale (package:mp_chart/mp/painter/bar_line_chart_painter.dart:362:5)
E/flutter (25850): #35 BarLineChartBasePainter.compute (package:mp_chart/mp/painter/bar_line_chart_painter.dart:477:7)
E/flutter (25850): #36 HorizontalBarChartPainter.calculateOffsets (package:mp_chart/mp/painter/horizontal_bar_chart_painter.dart:150:5)
E/flutter (25850): #37 BarLineChartBasePainter.autoScale (package:mp_chart
✓ Built build/app/outputs/apk/debug/app-debug.apk.
Installing build/app/outputs/apk/app.apk...
Syncing files to device SM G965N...

Click 'Horizontal' or 'Stacked 2'

════════ Exception caught by rendering library ═════════════════════════════════════════════════════
The following StackOverflowError was thrown during paint():
Stack Overflow

The relevant error-causing widget was:
HorizontalBarChart file:///my_path/MPFlutterChart-master/mp_chart/example/lib/demo/bar_chart/horizontal.dart:207:20
When the exception was thrown, this was the stack:
#0 new TextStyle (dart:ui/text.dart:607:3)
#1 TextSpan.build (package:flutter/src/painting/text_span.dart:485:26342)
#2 TextPainter.layout (package:flutter/src/painting/text_painter.dart:544:13)
#3 Legend.getMaximumEntryWidth (package:mp_chart/mp/core/legend/legend.dart:275:50)
#4 Legend.calculateDimensions (package:mp_chart/mp/core/legend/legend.dart:358:21)
...
The following RenderObject was being processed when the exception was fired: RenderCustomPaint#8324c
... parentData: (can use size)
... constraints: BoxConstraints(w=600.9, h=733.4)
... size: Size(600.9, 733.4)
RenderObject: RenderCustomPaint#8324c
parentData: (can use size)
constraints: BoxConstraints(w=600.9, h=733.4)
size: Size(600.9, 733.4)
════════════════════════════════════════════════════════════════════════════════════════════════════

════════ (2) Exception caught by rendering library ═════════════════════════════════════════════════
Stack Overflow
The relevant error-causing widget was:
HorizontalBarChart file:///my_path/MPFlutterChart-master/mp_chart/example/lib/demo/bar_chart/horizontal.dart:207:20
════════════════════════════════════════════════════════════════════════════════════════════════════

LineActionState 找不到这个类

LineActionState 在0.1.2中找不到这个类。
另外图表区域不支持左右平行滑动吗？

animation on new entry in line chart

Is it possible to animate the drawing line in line-chart when a new entry is added? if so how can I achieve that?

LineChart中，x轴是否支持字符串类型？

在LineChart图中，例子中数据是通过List values = List();values.add(Entry(x: i.toDouble(), y: val)); 进行数据填充，Entry中，x与y都是double类型，如果x轴要显示字符串，为“1月”、“2月”、“3月”或是时间如“00:00:10”、"00:00:15"之类的，要如何处理？

LineChart中，如果y轴最小值为0，最大值为100，每20一标识，这样画gridLine就有5格，能否每格设置不同颜色？

LineChart中，如果y轴最小值为0，最大值为100，每20一标识，这样画gridLine就有5格，能否每格设置不同背景颜色？如0-20这一格背景设为红色，20-40这一格背景设为蓝色？

OnDrawListener is not working?

I implemented a OnDrawListener like this:

class _DrawListener implements OnDrawListener {
  void onEntryAdded(Entry entry) {
    print('entry added');
  }
  void onEntryMoved(Entry entry) {
    print('entry moved');
  }
  void onDrawFinished(DataSet<Entry> dataSet) {
    print('draw finished');
  }
}

Then set it to my CombinedChartController:

_controller = CombinedChartController(
  // ... other properties
  drawListener: _DrawListener(),
);

Seems the callbacks never get executed.

Update Realtime continuous random/sensor data

It would be nice to update the realtime graph plot example for this library.

The limit label y position is not correct

When we set label position to LimitLabelPosition.LEFT_CENTER and LimitLabelPosition.RIGHT_CENTER, the y position is not aligned center.

I have created a pull request #43 to fix this issue.

Before:

After:

Issue backgroundColor and highLightPerTapEnabled

If the background color is set and highlight per tag is enabled, the highlighting sets the pie chart to the background color.

flutter版本用1.5.4出现错误。

运行测试例子，flutter版本用1.5.4，出现错误，如下：
Error: The method 'groupBars' isn't defined for the class 'BarChart'.
Error: The getter 'localPosition' isn't defined for the class 'PointerDownEvent'.
Error: The getter 'localPosition' isn't defined for the class 'TapDownDetails'.等等。
请问能否支持flutter1.5.4版本？

mpAndroidChart通过lineChart.moveViewToX方法移动view到最新数据，mp_flutter_chart要如何实现？

在lineChart中，动态加点，view右移图表到最新数据。在mpAndroidChart中，可以通过lineChart.moveViewToX方法移动，如下
data.addEntry(new Entry(x, y), 0);
data.notifyDataChanged();
lineChart.notifyDataSetChanged();
lineChart.setVisibleXRangeMaximum(60);
lineChart.moveViewToX(data.getEntryCount());
在mp_flutter_chart中没找到lineChart.moveViewToX的方法，请问要如何实现？

OnTouchEventListener gives wrong x and y values

If the valueType of an OnTouchEventListener is set to CHART, the x and y value in events should be the chart value of the touch point, right?

But it is not. Not I have to use valueType LOCAL then controller.getValuesByTouchPoint() to get the value I tapped.

柱状图点击显示问题

目前，点击柱状图的某个柱，顶部会显示标签，内容为x轴值,y轴值， 如"1，3.12"、“2，4.1” ，1为x轴，3.12为y轴值，请问如何设置成只显示y轴值，如"3.12"，不显示x轴的值？

Limit line label background color?

Hi, I would like to set a background color for the label of limit line like:

Is it possible with this library?

Fix spelling mistakes

It should be limit line but not limite line, I have created #52 to fix this issue. Thanks.

update lib

hi
Please update the lib version

y-axis overflow

I have noticed that in some datasets, the y-axis would overflow. You can see it overlapped with the content above:

I have created a minimal repository to reproduce the issue:
https://github.com/crizant/mp_chart_issue

Any help is appreciated. Thanks!

moveViewToY not found

i can't find moveViewToY in chart

Change zoom level

Hi! Thanks for this library!
How can I change zoom level from code? I was reading that is changing viewport, but i cant.
Thank you!

support keyboard and mouse

Please add support keyboard and mouse for
move
zoom
and ...
Thanks

[Bug] posation y in chart

position y in ChartCombined chart not correct
double y=controller.getValuesByTouchPoint(controller.viewPortHandler.contentRight(),controller.viewPortHandler.contentBottom(), AxisDependency.RIGHT).y

How to make the radar-chart position to top by own?

Problem

I tried almost of the setter in RadarChartControllerとfix the chart position but dosn`t effect.
There is any way to specified the chart position?
and erase the title-label.

What I tried

RadarChartController(
  ...
  legendSettingFunction: (legend, controller) {
    legend
      ...
      ..yOffset = (0);
  }
  ...
}

Use yOffset can specified the position, but cant move until the top.
I think this is caused by the title-label of the radar-chart.
Does anyone know how to solve this problem?

项目有引入path_provider包，版本为^1.1.0，请问这个包是否可去掉，或是降低版本到0.5.0?

mp_chart项目有引入path_provider包，版本为^1.1.0，请问这个包是否可去掉，或是降低版本到0.5.0?
因为我旧的项目是引入0.5.0，有其他第三方插件也是依赖path_provider0.5.0版本，所以如果升级到1.1.0以上，就有问题。

barcharts crash on zoom with a lot of data

thanks for this great library port!

When a set a lot of data in barcharts and apply zoom in/out the app stop with the error below. im using the demo app in my iOS device iPhone 7.

stack trace in xcode:
2019-09-30 23:41:26.337733-0300 Runner[1930:141345] flutter: Another exception was thrown: Unsupported operation: Result of truncating division is Infinity or NaN

Info background color?

Currently the "No chart data available" screen is white in background.
Would you please apply the value of backgroundColor to it, or add an option infoBackgroundColor, so that we can customize the style of it?

How to change background color of the CandlestickChart from white to black?

[bug] problem in autoScale

i create to custom autoScale for combind follow Candle data

https://streamable.com/wfqkw

  @override
  void onMoveUpdate(double x, double y) {
    double xmin=controller.getValuesByTouchPoint(controller.viewPortHandler.contentLeft(),controller.viewPortHandler.contentBottom(), AxisDependency.RIGHT).x;
    double xmax=controller.getValuesByTouchPoint(controller.viewPortHandler.contentRight(),controller.viewPortHandler.contentBottom(), AxisDependency.RIGHT).x;

    double ymin=controller.getValuesByTouchPoint(controller.viewPortHandler.contentRight(),controller.viewPortHandler.contentBottom(), AxisDependency.RIGHT).y;
    double ymax=controller.getValuesByTouchPoint(controller.viewPortHandler.contentRight(),controller.viewPortHandler.contentTop(), AxisDependency.RIGHT).y;
    double candle_y_max=0;
    double candle_y_min=double.maxFinite;

    for(int i=xmin.toInt();i<xmax;i++){
      if(i>=0 && i< entries.length){
        if(candle_y_min>entries[i].shadowLow){
          candle_y_min=entries[i].shadowLow;
        }
        if(candle_y_max<entries[i].shadowHigh){
          candle_y_max=entries[i].shadowHigh;
        }
      }

    }
    double space=0.20;
    controller.moveViewTo(xmin,(candle_y_min+((ymax-ymin)/2))-space, AxisDependency.RIGHT);
    controller.setVisibleYRange(0.0,(candle_y_max-candle_y_min)+(space),AxisDependency.RIGHT);
    
  }

`highlightPerDragEnabled` in line chart is not working

Currently we can only show highlight by tap, but not drag.

#37 seems solved this issue.

On viewport update listener

This is an extension of #29 and #48. But the on touch listener only receives events when the finger is touching the screen.

1. When we scroll fast, the chart will continue to scroll for a little distance after the finger is not in contact with the screen.
2. If we programmatically modify the viewport, for example calling painter.zoom(), the on touch listener will not be notified.

It would be nice if there's a listener which is called once the chart is translated and scaled.

Should not init axis if provided to controller

Currently even if axisLeft, axisRight is provided to controller, it gets overridden in the doneBeforePainterInit function.

I have created #56 to fix this issue.

SelectionListener only working if HighLightPerTapEnabled is enabled

If the highLightPerTapEnabled option is disabled the selection listener stops working as well.