Perspective - Gauge

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The Gauge component in Perspective provides a way to show realtime values in a range as they change. The gauge can have one or two axis. It is fully customizable in its appearance, from colors, line widths, needle length, radius, and more.

The Gauge component has three pre-configured variants:

• Half Circle - Default layout with a half-circle gauge.
• 3/4 Circle - Layout with a 3/4 circle gauge.
• Full Axis - Layout with a full axis gauge. For an example of each variant, see the examples section below.

Properties

Most Properties have binding options. For more information on Bindings, see Types of Bindings in Perspective. This section only documents the Props Category of properties. The other Categories are described on the Perspective Component Properties page.

Name	Description	Property Type
value	Numeric value for the gauge to display. Default is 0.	value: numeric
secondaryValue	Optional secondary value for the gauge to display on a second axis. Default is 0.	value: numeric
startAngle	Radial position for the start of the gauge's axis. Default is 180.	value: numeric
endAngle	Radial position for the end of the gauge's axis. Default is 360.	value: numeric
outerAxis	Sets the values for an outer axis on the gauge. Click to see the outerAxis properties.	object
innerAxis	Sets the values for an inner axis on the gauge. Click to see the innerAxis properties.	object
backgroundColor	Color applied as a background within the gauge. Can be chosen from color wheel, chosen from color palette, or entered as RGB or HSL value. See Color Selector.	color
animate	Whether needle should be animated in a sweeping motion when value changes. Default is false.	value: boolean
reverseScale	If true, the gauge will reverse the direction from minValue to maxValue on its dial.	value: boolean
style	Sets a style for this gauge. Full menu of style options is available for text, background, margin and padding, border, shape and miscellaneous. You can also specify a style class.	object

outerAxis Properties

Name	Description	Property Type
data	What value this axis and its needle should display. Can be set to the value or secondary value of the gauge.	value: string dropdown
show	Whether the outer axis is displayed. Default is true (show).	value: boolean
minValue	Minimum gauge value for this axis. Default is zero (0).	value: numeric
maxValue	Maximum gauge value for this axis. Default is 120.	value: numeric
width	Width of the line (in pixels) that represents the outer axis.	value: numeric
color	Color of the arc line that represents the outer axis. Can be chosen from color wheel, chosen from color palette, or entered as RGB or HSL value. See Color Selector.	color
percentRadius	Radius of the outer axis, as a percentage of the total chart radius.	value: numeric
ranges	Zones defined on the gauge arc line with a unique color. Array values always start at 0 and increment. start: Value at which this range starts. Value is numeric. end: Value at which this range ends. Value is numeric. width: Width of this axis, in pixels. Value is numeric. color: Color to apply to this range of the dial. Can be chosen from color wheel, chosen from color palette, or entered as RGB or HSL value.	array
needle	Settings for the needle on the gauge. origin: Distance from the gauge's center or at which the needle originates, as a percentage of the radius. For example, a value of 0 indicates the needle starts at the center point of the gauge. A value of 50 indicates it starts 50% from the center point. Value is numeric. reach: How far the needle reaches from the center of the gauge towards the outer dial, as a percentage of the radius. For example, a value of 100 indicates the needle will reach all the way to the outer axis. Value is numeric. color: Color of the gauge's needle. Can be chosen from color wheel, chosen from color palette, or entered as RGB or HSL value. See Color Selector.	object
tickMarks	Settings for the display of the tick marks on the outer access. color: Color of the tick marks. Can be chosen from color wheel, chosen from color palette, or entered as RGB or HSL value. See Color Selector. thickness: Thickness of the tick marks, in pixels. Default is 1. Value is numeric. length: Length of the tick marks, in pixels. Default is 10. Value is numeric.	object

innerAxis Properties

Name	Description	Property Type
data	What value this axis and its needle should display. Can be set to the value or secondary value of the gauge.	value: numeric
show	Whether the inner axis is displayed on the gauge. Default is false (don't show).	value: boolean
minValue	Minimum gauge value for this axis. Default is zero (0).	value: numeric
maxValue	Maximum gauge value for this axis. Default is 80.	value: numeric
width	Width of the line (in pixels) that represents the inner axis.	value: numeric
color	Color of the arc line that represents the inner axis. Can be chosen from color wheel, chosen from color palette, or entered as RGB or HSL value. See Color Selector.	color
percentRadius	Radius of the inner axis, as a percentage of the total chart radius.	value: numeric
ranges	Number of zones defined on the gauge arc line with a unique color. start: Value at which this range starts. Value is numeric. end: Value at which this range ends. Value is numeric. width: Width of this axis, in pixels. Value is numeric. color: Color to apply to this range of the dial. Can be chosen from color wheel, chosen from color palette, or entered as RGB or HSL value. See Color Selector.	array
needle	Settings for the display of the needle on the inner access. color: Color of the gauge's needle. Can be chosen from color wheel, chosen from color palette, or entered as RGB or HSL value. See Color Selector. origin: Distance from the gauge's center at which the needle originates, as a percentage of the radius. For example, a value of 0 indicates the needle starts at the center point of the gauge. For example, a value of 50 indicates it starts 50% from the center point. Value is numeric. reach: Length of the needle in percentage. For example, a value of 100 indicates the needle will reach all the way to the inner axis. Value is numeric.	object
tickMarks	Settings for the display of the tick marks on the inner access. color: Color of the tick marks. Can be chosen from color wheel, chosen from color palette, or entered as RGB or HSL value. See Color Selector. thickness: Thickness of the tick marks, in pixels. Default is 1. Value is numeric. length: Length of the tick marks, in pixels. Default is 10. Value is numeric.	object

Component Events

The Perspective Event Types Reference page describes all the possible component event types for Perspective components. Not all component events support each Perspective component. The Component Events and Actions page shows how to configure events and actions on a Perspective component. Component scripting is handled separately and can be accessed from the Component menubar or by right clicking on the component.

Examples

Example 1 - Fourth Axis

In this example we added a fourth axis (outerAxis.ranges.3) and configured it.

Property	Value
Value	75
props.outerAxis.maxValue	150
props.outerAxis.ranges.3.start	120
props.outerAxis.ranges.3.end	150
props.outerAxis.ranges.3.width	20
props.outerAxis.ranges.3.color	#C077D8

Example 2 - 3/4 Circle Variant

Start with the Gauge 3/4 Circle variant. Set the properties as follows:

Property	Value
props.startAngle	90
props.endAngle	360
props.outerAxis.ranges.0.color	#FFFF00
props.outerAxis.ranges.1.color	#FF8C00
props.outerAxis.ranges.2.color	#D90000

Example 3 - Full Axis Variant

Start with the Gauge Full Axis variant. Set the properties as follows:

Property	Value
props.startAngle	135
props.endAngle	405
props.outerAxis.maxValue	300
props.outerAxis.ranges.0.end	100
props.outerAxis.ranges.1.start	100
props.outerAxis.ranges.1.end	200
props.outerAxis.ranges.2.start	200
props.outerAxis.ranges.2.end	300
props.outerAxis.tickMarks.color	#000000
props.outerAxis.tickMarks.thickness	2
props.style.color	#000000
props.style.fontFamily	Verdana
props.style.fontSize	12
props.style.fontWeight	bold