Add Limit Line

[Deain]

[dharanidharandharmasivam]

Hi @Deain ,

Thanks for using our Syncfusion Chart Flutter widget. The limit line can be rendered using the plot band feature. We have prepared a simple sample and you can find the code snippet below to render the limit line and the text.

  SfCartesianChart(
      
      // Render text (Limit line) using the annotation feature
        annotations: <CartesianChartAnnotation>[
           CartesianChartAnnotation(
               widget: Container(
               child: const Text('Limit Line', style: TextStyle(
                 fontSize: 24,
                 fontWeight: FontWeight.bold
               ),)),
               coordinateUnit: CoordinateUnit.point,
               region: AnnotationRegion.plotArea,
               x: 'X1',
               y: 3100
            ),
        ],

        primaryYAxis: NumericAxis(
          
          // Render limit line
          plotBands: <PlotBand>[
            PlotBand(
                isVisible: true,
                start: 2980,
                end: 3020,
                shouldRenderAboveSeries: false,
                color: const Color.fromRGBO(207, 85, 7, 1))
          ],
        ),
)

To know more on the plot band, find the user guide.

Hope this helps.

Thanks,
Dharani.