In this pull request I add the ability to set a custom label for yAxis (still use units[index] if not provided). Fix exception when DateTime in series is the same for all values in Map(offset in NaN exception). Update example app to remove deprecated FlatButton and add windows support (tested on my windows 11 pc).

Hi @JacobJust

According to your implementation, i can able to show only two charts. I need to show three lines (High,low,medium) graph. How to acheive it? In your pictorial representation, you have showed three graphs. Let me have some examples for showing three lines as i am facing exception

Thanks in advance

In this pull request, this package migrated this package to null safety. The basic functionality is working, but need to do some minor changes in the components to remove some not fully correct transitions.

Is it possible to customize the text and color properties of different parts of the chart? ex. color of the horizontal and vertical lines, color and font of text?

There are some disadvantages, such as the inability to set the Y axis minimum, too few configurable parameters, and a slightly more complex function that requires a large amount of source code modification. It is highly recommended to add a configurable parameter: Y axis minimum

I managed to make the example run, but I can't find a way to plot a simple x,y data line. My attempt was to do so :

var points = [ChartPoint(1.0,2.0),ChartPoint(2.0,0.0),ChartPoint(3.0,4.0),ChartPoint(4.0,1.0),ChartPoint(5.0,4.0),ChartPoint(6.0,6.0)];
var data = ChartLine(points,Color(0xFF42A5F5),'°C');
chart = LineChart([data],??);

but the fromTo arguments seems to want "Dates" ... I don't have any :) Any ideas ? Thanks

Hi there! Great library

Only issue I have is when length of the data map is only 1, my layout shifts weirdly and I get this error:

Exception caught by rendering library The following assertion was thrown during paint(): Offset argument contained a NaN value. 'dart:ui/painting.dart': Failed assertion: line 38: ''

Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause. In either case, please report this assertion by filing a bug on GitHub: https://github.com/flutter/flutter/issues/new?template=BUG.md

The relevant error-causing widget was AnimatedLineChart-[#5c159] lib\…\anomaly_tag_screens\wristbands_screen.dart:190 When the exception was thrown, this was the stack #2 _offsetIsValid (dart:ui/painting.dart:38:10) #3 Canvas.drawCircle (dart:ui/painting.dart:3643:12) #4 ChartPainter._drawLines.. (package:fl_animated_linechart/chart/animated_line_chart.dart:351:40) #5 List.forEach (dart:core-patch/growable_array.dart:285:8) #6 ChartPainter._drawLines. (package:fl_animated_linechart/chart/animated_line_chart.dart:351:18) ... The following RenderObject was being processed when the exception was fired: RenderCustomPaint#996d4 RenderObject: RenderCustomPaint#996d4 parentData: (can use size) constraints: BoxConstraints(w=330.0, h=229.5) size: Size(330.0, 229.5)