Axes in Blazor Linear Gauge component
Axes is a collection of linear axis which can be used to indicate the numeric values. Line, ticks, labels, ranges and pointers are the sub elements of an axis.
Line Customization
The LinearGaugeLine tag of an axis provides options to customize the Height, Width,Color and Offset of the axis line.
<SfLinearGauge>
<LinearGaugeAxes>
<LinearGaugeAxis>
<LinearGaugeLine Height="150"
Width="2"
Color="#4286f4"
Offset="2">
</LinearGaugeLine>
</LinearGaugeAxis>
</LinearGaugeAxes>
</SfLinearGauge>
Ticks Customization
You can customize the Height, Color and Width of major and minor ticks, by using LinearGaugeMajorTicks and LinearGaugeMinorTicks tag. By default, interval for major ticks will be calculated automatically and also you can customize the interval for major and minor ticks using Interval property.
<SfLinearGauge>
<LinearGaugeAxes>
<LinearGaugeAxis Minimum =20 Maximum =140>
<LinearGaugeMajorTicks Color="#9e9e9e" Interval="20" Height="20">
</LinearGaugeMajorTicks>
<LinearGaugeMinorTicks Color="red" Interval="5" Height="10">
</LinearGaugeMinorTicks>
</LinearGaugeAxis>
</LinearGaugeAxes>
</SfLinearGauge>
Tick Position
The minor and major ticks can be positioned by using Offet and [Position] property. The offset defines the difference between the axis and the ticks. By default, the offset value is 0. The Position specifies the position of the ticks. Its possible values are ‘Position.Inside’, ‘Position.Outside’ and ‘Position.Cross’. By default, ticks will be placed inside the axis.
<SfLinearGauge>
<LinearGaugeAxes>
<LinearGaugeAxis Minimum="0" Maximum="160">
<LinearGaugeMajorTicks Interval="10" Color="red" Height="10" Width="3" Position="Position.Outside">
</LinearGaugeMajorTicks>
<LinearGaugeMinorTicks Interval="5" Color="green" Height="5" Width="2" Position="Position.Cross">
</LinearGaugeMinorTicks>
</LinearGaugeAxis>
</LinearGaugeAxes>
</SfLinearGauge>
Labels Customization
Labels can be customized using the folllowing properties in LinearGaugeAxisLabelStyle
Format- Specifies the format for the labels.Offset- Specifies the offset from its default position.LinearGaugeAxisLabelFont- Specifies the font for of the label.
<SfLinearGauge>
<LinearGaugeAxes>
<LinearGaugeAxis>
<LinearGaugeAxisLabelStyle>
<LinearGaugeAxisLabelFont Color="red"></LinearGaugeAxisLabelFont>
</LinearGaugeAxisLabelStyle>
</LinearGaugeAxis>
</LinearGaugeAxes>
</SfLinearGauge>
Label Position
Labels can be positioned by using Offset or [Position] property. The Offset defines the distance between the labels and ticks. By default, the offset value is 0.
The [Position] specifies the label position. Its possible values are ‘Position.Inside’, ‘Position.Outside’ and ‘Position.Cross’. By default, labels will be placed Inside the axis.
<SfLinearGauge>
<LinearGaugeAxes>
<LinearGaugeAxis>
<LinearGaugeAxisLabelStyle Position="Position.Cross">
</LinearGaugeAxisLabelStyle>
</LinearGaugeAxis>
</LinearGaugeAxes>
</SfLinearGauge>
Customize the display of the last label
If the last label is not in the visible range, it will be hidden by default. If you want to show the last label, set the [ShowLastLabel] property to true in the LinearGaugeAxis.
<SfLinearGauge>
<LinearGaugeAxes>
<LinearGaugeAxis Minimum="0" Maximum="170" ShowLastLabel="true">
</LinearGaugeAxis>
</LinearGaugeAxes>
</SfLinearGauge>
Label Format
Axis labels can be formatted using the Format property in LinearGaugeAxisLabelStyle
<SfLinearGauge>
<LinearGaugeAxes>
<LinearGaugeAxis>
<LinearGaugeAxisLabelStyle Format="c">
</LinearGaugeAxisLabelStyle>
</LinearGaugeAxis>
</LinearGaugeAxes>
</SfLinearGauge>
The following table describes the result of applying some commonly used label formats on numeric values.
| Label Value | Label Format property value | Result | Description |
| 1000 | n1 | 1000.0 | The Number is rounded to 1 decimal place |
| 1000 | n2 | 1000.00 | The Number is rounded to 2 decimal place |
| 1000 | n3 | 1000.000 | The Number is rounded to 3 decimal place |
| 0.01 | p1 | 1.0% | The Number is converted to percentage with 1 decimal place |
| 0.01 | p2 | 1.00% | The Number is converted to percentage with 2 decimal place |
| 0.01 | p3 | 1.000% | The Number is converted to percentage with 3 decimal place |
| 1000 | c1 | 0. ,000.0 | The Currency symbol is appended to number and number is rounded to 1 decimal place |
| 1000 | c2 | 0. ,000.00 | The Currency symbol is appended to number and number is rounded to 2 decimal place |
Custom Label Format
Axis also supports custom label format using placeholder like {value}°C, in which the value represents the axis label e.g. 20°C.
<SfLinearGauge>
<LinearGaugeAxes>
<LinearGaugeAxis Minimum =20 Maximum =140>
<LinearGaugeLabel Format= "{value}°C">
</LinearGaugeLabel>
</LinearGaugeAxis>
</LinearGaugeAxes>
</SfLinearGauge>
Orientation
By default, the Linear Gauge is rendered vertically. To change its orientation, the Orientationproperty must be set “Horizontal”
<SfLinearGauge Orientation="Orientation.Horizontal">
<LinearGaugeAxes>
<LinearGaugeAxis Minimum="20" Maximum="140"></LinearGauge>
</LinearGaugeAxes>
</SfLinearGauge>
Inverted Axes
IsInversed property is used to choose the rendering of axis either bottom to top or top to bottom direction.
<SfLinearGauge>
<LinearGaugeAxes>
<LinearGaugeAxis IsInversed=true>
</LinearGaugeAxis>
</LinearGaugeAxes>
</SfLinearGauge>
Opposed Axes
To place an axis opposite from its original position, set OpposedPosition property as true in the axis.
<SfLinearGauge>
<LinearGaugeAxes>
<LinearGaugeAxis OpposedPosition=true>
</LinearGaugeAxis>
</LinearGaugeAxes>
</SfLinearGauge>
Multiple Axes
You can render any number of axis for a Linear Gauge by using array of axis objects. Each axis will have its own ranges, pointers, annotations and customization options.
<SfLinearGauge>
<LinearGaugeAxes>
<LinearGaugeAxis Minimum=20 Maximum=100>
<LinearGaugeLabel Format="{value}°C">
</LinearGaugeLabel>
</LinearGaugeAxis>
<LinearGaugeAxis Minimum=20 Maximum=100 OpposedPosition=true>
<LinearGaugeMajorTicks Interval="20" Height="20">
</LinearGaugeMajorTicks>
<LinearGaugeMinorTicks Interval="5" Height="10">
</LinearGaugeMinorTicks>
<LinearGaugeLabel Format="{value}°C">
</LinearGaugeLabel>
</LinearGaugeAxis>
</LinearGaugeAxes>
</SfLinearGauge>
