Ranges in Xamarin Linear Gauge (SfLinearGauge)

Range is a visual element, which begins and ends at specified values within a scale. You can add any number of range for a scale by using the array of range objects.

Setting start and end values for range

Start and end values of ranges are set by using the StartValue and EndValue properties.

<gauge:SfLinearGauge>

            <gauge:SfLinearGauge.Scales>
                <gauge:LinearScale ScaleBarColor="#e0e0e0" LabelColor="#424242">
                    <gauge:LinearScale.MajorTickSettings>
                        <gauge:LinearTickSettings Thickness="1"  Color="Gray" Length="15"/>
                    </gauge:LinearScale.MajorTickSettings>
                    <gauge:LinearScale.MinorTickSettings>
                        <gauge:LinearTickSettings Thickness="1"  Color="Gray" Length="7"/>
                    </gauge:LinearScale.MinorTickSettings>
                    <gauge:LinearScale.Ranges>
                        <gauge:LinearRange StartValue="0" EndValue="60" Color="#27beb7" Offset = "-20"/>
                    </gauge:LinearScale.Ranges>
                </gauge:LinearScale>
            </gauge:SfLinearGauge.Scales>

      </gauge:SfLinearGauge>
SfLinearGauge linearGauge = new SfLinearGauge();
            LinearScale linearScale = new LinearScale();
            linearScale.ScaleBarColor = Color.FromHex("#e0e0e0");
            linearScale.LabelColor = Color.FromHex("#424242");
            linearScale.MajorTickSettings.Thickness = 1;
            linearScale.MajorTickSettings.Length = 15;
            linearScale.MajorTickSettings.Color = Color.Gray;
            linearScale.MinorTickSettings.Color = Color.Gray;
            linearScale.MinorTickSettings.Length = 7;
            linearScale.MinorTickSettings.Thickness = 1;
            LinearRange linearRange = new LinearRange();
            linearRange.StartValue = 0;
            linearRange.EndValue = 60;
            linearRange.Color = Color.FromHex("#27beb7");
            linearRange.Offset = -20;
            linearScale.Ranges.Add(linearRange);
            linearGauge.Scales.Add(linearScale);

Linear Gauge Ranges

Range customization

To change the range’s background color, use the Color property of linear range. The thickness of the range can be changed using the StartWidth and EndWidth properties.

<gauge:SfLinearGauge>

             <gauge:SfLinearGauge.Scales>
                <gauge:LinearScale ScaleBarColor="#e0e0e0" LabelColor="#424242">
                    <gauge:LinearScale.MajorTickSettings>
                        <gauge:LinearTickSettings Thickness="1"  Color="Gray" Length="15"/>
                    </gauge:LinearScale.MajorTickSettings>
                    <gauge:LinearScale.MinorTickSettings>
                        <gauge:LinearTickSettings Thickness="1"  Color="Gray" Length="7"/>
                    </gauge:LinearScale.MinorTickSettings>
                    <gauge:LinearScale.Ranges>
                        <gauge:LinearRange StartValue="0" EndValue="50" Color="#f95c85" Offset = "-30" StartWidth ="-5" EndWidth ="-20"/>
                    </gauge:LinearScale.Ranges>
                </gauge:LinearScale>
            </gauge:SfLinearGauge.Scales>

      </gauge:SfLinearGauge>
SfLinearGauge linearGauge = new SfLinearGauge();
            LinearScale linearScale = new LinearScale();
            linearScale.ScaleBarColor = Color.FromHex("#e0e0e0");
            linearScale.LabelColor = Color.FromHex("#424242");
            linearScale.MajorTickSettings.Thickness = 1;
            linearScale.MajorTickSettings.Length = 15;
            linearScale.MajorTickSettings.Color = Color.Gray;
            linearScale.MinorTickSettings.Color = Color.Gray;
            linearScale.MinorTickSettings.Length = 7;
            linearScale.MinorTickSettings.Thickness = 1;
            linearGauge.Scales.Add(linearScale);
            LinearRange linearRange = new LinearRange();
            linearRange.StartValue = 0;
            linearRange.Color = Color.FromRgb(249, 92, 133);
            linearRange.EndValue = 50;
            linearRange.StartWidth = -5;
            linearRange.EndWidth = -20;
            linearRange.Offset = -30;
            linearScale.Ranges.Add(linearRange);
            linearGauge.Scales.Add(linearScale);

Linear Gauge Range Customization

Setting position for range

The range can be adjusted above or below the scale by using the Offset value in pixels.

<gauge:SfLinearGauge Orientation = "OrientationVertical">

            <gauge:SfLinearGauge.Scales>
                <gauge:LinearScale ScaleBarColor="#e0e0e0" LabelColor="#424242" OpposedPosition ="True" Interval ="10" ScaleBarLength="350" MinorTicksPerInterval ="1">
                 <gauge:LinearScale.MajorTickSettings>
                        <gauge:LinearTickSettings Thickness="1"  Color="Gray" Length="15"/>
                    </gauge:LinearScale.MajorTickSettings>
                    <gauge:LinearScale.MinorTickSettings>
                        <gauge:LinearTickSettings Thickness="1"  Color="Gray" Length="7"/>
                    </gauge:LinearScale.MinorTickSettings>
                    <gauge:LinearScale.Ranges>
                        <gauge:LinearRange StartValue="0" EndValue="50" Color="#27beb7" Offset = "30"/>
                    </gauge:LinearScale.Ranges>
                </gauge:LinearScale>
            </gauge:SfLinearGauge.Scales>

      </gauge:SfLinearGauge>
SfLinearGauge linearGauge = new SfLinearGauge();
            linearGauge.Orientation = Orientation.OrientationVertical;
            LinearScale linearScale = new LinearScale();
            linearScale.ScaleBarColor = Color.FromHex("#e0e0e0");
             linearScale.MajorTickSettings.Thickness = 1;
            linearScale.MajorTickSettings.Length = 15;
            linearScale.MajorTickSettings.Color = Color.Gray;
            linearScale.MinorTickSettings.Color = Color.Gray;
            linearScale.MinorTickSettings.Length = 7;
            linearScale.MinorTickSettings.Thickness = 1;
            linearScale.MinorTicksPerInterval = 1;   
            linearScale.OpposedPosition = true;
            linearScale.Interval = 10;
            linearScale.ScaleBarLength = 350;
            linearScale.LabelColor = Color.FromHex("#424242");
            LinearRange linearRange = new LinearRange();
            linearRange.StartValue = 0;
            linearRange.EndValue = 50;
            linearRange.Color = Color.FromHex("#27beb7");
            linearRange.Offset = 30;
            linearScale.Ranges.Add(linearRange);
            linearGauge.Scales.Add(linearScale);

Linear Gauge Range Position

Setting multiple ranges

You can add n number of ranges to a scale by using the LinearRange property of range as demonstrated below.

<gauge:SfLinearGauge>
      
            <gauge:SfLinearGauge.Scales>
                <gauge:LinearScale ScaleBarColor="Transparent" ShowTicks="False" LabelColor="#424242" Interval="25" LabelFontSize ="14" LabelOffset="-10" MinorTicksPerInterval ="0">
                    <gauge:LinearScale.Ranges>
                        <gauge:LinearRange StartValue="0" EndValue="25" Color="#6de500" StartWidth ="-10" EndWidth="-15"/>
                        <gauge:LinearRange StartValue="25" EndValue="50" Color="#53ad00" StartWidth ="-15" EndWidth="-20"/>
                        <gauge:LinearRange StartValue="50" EndValue="75" Color="#009148" StartWidth ="-20" EndWidth="-25"/>
                        <gauge:LinearRange StartValue="75" EndValue="100" Color="#026623" StartWidth ="-25" EndWidth="-30"/>
                    </gauge:LinearScale.Ranges>
                </gauge:LinearScale>
            </gauge:SfLinearGauge.Scales>

      </gauge:SfLinearGauge>
SfLinearGauge linearGauge = new SfLinearGauge();

            LinearScale linearScale = new LinearScale();
            linearScale.ScaleBarColor = Color.Transparent;
            linearScale.LabelColor = Color.FromHex("#424242");
            linearScale.LabelFontSize = 14;
            linearScale.LabelOffset = -10;
            linearScale.Interval = 25;
            linearScale.MinorTicksPerInterval = 0;
            linearScale.ShowTicks = false;

            LinearRange linearRange = new LinearRange();
            linearRange.StartValue = 0;
            linearRange.EndValue = 25;
            linearRange.Color = Color.FromHex("#6de500");
            linearRange.StartWidth = -10;
            linearRange.EndWidth = -15;
            linearScale.Ranges.Add(linearRange);

            LinearRange linearRange1 = new LinearRange();
            linearRange1.StartValue = 25;
            linearRange1.EndValue = 50;
            linearRange1.Color = Color.FromHex("#53ad00");
            linearRange1.StartWidth = -15;
            linearRange1.EndWidth = -20;
            linearScale.Ranges.Add(linearRange1);

            LinearRange linearRange2 = new LinearRange();
            linearRange2.StartValue = 50;
            linearRange2.EndValue = 75;
            linearRange2.Color = Color.FromHex("#009148");
            linearRange2.StartWidth = -20;
            linearRange2.EndWidth = -25;
            linearScale.Ranges.Add(linearRange2);

            LinearRange linearRange3 = new LinearRange();
            linearRange3.StartValue = 75;
            linearRange3.EndValue = 100;
            linearRange3.Color = Color.FromHex("#026623");
            linearRange3.StartWidth = -25;
            linearRange3.EndWidth = -30;
            linearScale.Ranges.Add(linearRange3);
            linearGauge.Scales.Add(linearScale);

Linear Gauge Multiple Ranges

Setting gradient color for range

You can give smooth color transition to range to specifying the different colors based on range value by using GradientStops property.

<gauge:SfLinearGauge>

            <gauge:SfLinearGauge.Scales>
                <gauge:LinearScale ScaleBarColor="Transparent" ScaleBarSize ="20" ShowTicks="False" LabelColor="#424242" Interval="25" LabelFontSize ="14" LabelOffset="10" MinorTicksPerInterval ="0">
                    <gauge:LinearScale.Ranges>
                        <gauge:LinearRange StartWidth="20" EndWidth="20" StartValue="0" EndValue="100">
                            <gauge:LinearRange.GradientStops>
                                <gauge:GaugeGradientStop Value="0" Color="#FFF9C2C3"/>
                                <gauge:GaugeGradientStop Value="100" Color="#FFD91D71"/>
                            </gauge:LinearRange.GradientStops>
                        </gauge:LinearRange>
                        </gauge:LinearScale.Ranges>
                </gauge:LinearScale>
            </gauge:SfLinearGauge.Scales>

      </gauge:SfLinearGauge>
SfLinearGauge linearGauge = new SfLinearGauge();
            LinearScale linearScale = new LinearScale();
            linearScale.ScaleBarColor = Color.Transparent;
            linearScale.LabelColor = Color.FromHex("#424242");
            linearScale.LabelFontSize = 14;
            linearScale.LabelOffset = 10;
            linearScale.Interval = 25;
            linearScale.MinorTicksPerInterval = 0;
            linearScale.ShowTicks = false;
            linearScale.ScaleBarSize = 20;

            LinearRange linearRange = new LinearRange();
            linearRange.StartValue = 0;
            linearRange.EndValue = 100;
            linearRange.StartWidth = 20;
            linearRange.EndWidth = 20;
            ObservableCollection<GaugeGradientStop> gradientColor = new ObservableCollection<GaugeGradientStop>()
            {
                new GaugeGradientStop() {Value = 0, Color = Color.FromHex("#FFF9C2C3") },
                new GaugeGradientStop() {Value = 100 ,Color = Color.FromHex("#FFD91D71") }
            };
            linearRange.GradientStops = gradientColor;
            linearScale.Ranges.Add(linearRange);
            linearGauge.Scales.Add(linearScale);

Linear Gauge Range With Gradient