# Gauge
The Gauge widget provides a clear and intuitive way to visualize single-value metrics. It is ideal for representing KPIs, performance scores, percentages, or real-time sensor readings. The widget lets users quickly assess the current state of a variable against defined ranges.
For a basic overview of the widget, visit [this article](https://help.ubidots.com/en/articles/8183881-ubidots-basics-widgets), which covers the basics of setting up a Gauge widget.
This section covers only the advanced features of the Gauge widget.
## ECharts configuration
{% hint style="warning" %}
This option is only available to Enterprise users.
{% endhint %}
[ECharts](https://echarts.apache.org/en/index.html) is a powerful open-source visualization library designed to create interactive and customizable charts. ECharts provides extensive customization options that let you tailor the appearance and behavior of gauges to fit specific requirements.
The Gauge widget is built on top of the ECharts library. This gives users access to all features provided by the library through the **ECharts configuration** option in the **APPEARANCE** tab:
After you click the option, a large drawer opens from the left and shows the [ECharts options JSON](https://echarts.apache.org/en/option.html#title). It maps all fields available in the UI and also provides an editing environment where users can take full advantage of the available series types.
{% hint style="info" %}
All fields exposed through the UI are mapped bidirectionally. This means that if you make a change in the UI, it is reflected in the ECharts options JSON, and vice versa.
{% endhint %}
## Examples
The examples below use the ECharts configuration option to produce the results shown. Without this advanced option, you cannot get the same visualization using only the fields available in the UI.
## Full circle Gauge
JSON Example
```json
{
"media": [
{
"query": {
"maxHeight": 165
},
"option": {
"series": [
{
"center": [
"50%",
"50%"
],
"radius": "80%",
"axisLine": {
"lineStyle": {
"width": 24
}
}
},
{
"center": [
"50%",
"50%"
],
"radius": "80%",
"progress": {
"width": 12
},
"detail": {
"rich": {
"unit": {
"fontSize": 8,
"lineHeight": 10
},
"value": {
"fontSize": 10,
"lineHeight": 12
}
},
"offsetCenter": [
0,
"6%"
],
"width": 62,
"height": 20,
"borderRadius": 12
}
}
]
}
},
{
"query": {
"maxAspectRatio": 1
},
"option": {
"series": [
{},
{
"detail": {
"rich": {
"unit": {
"fontSize": 10
},
"value": {
"fontSize": 14
}
},
"offsetCenter": [
0,
"8%"
]
}
}
]
}
},
{
"query": {
"maxAspectRatio": 1.12,
"minAspectRatio": 1
},
"option": {
"series": [
{},
{
"detail": {
"rich": {
"unit": {
"fontSize": 11
},
"value": {
"fontSize": 18
}
},
"offsetCenter": [
0,
"8%"
]
}
}
]
}
}
],
"series": [
{
"type": "gauge",
"min": 0,
"max": 100,
"startAngle": 90,
"endAngle": -270,
"center": [
"50%",
"50%"
],
"radius": "86%",
"pointer": {
"show": false
},
"progress": {
"show": false
},
"axisLine": {
"lineStyle": {
"width": 32,
"color": [
[
1,
"#E9EDF2"
]
]
}
},
"axisTick": {
"show": false
},
"splitLine": {
"show": false
},
"axisLabel": {
"show": false
},
"title": {
"show": false
},
"detail": {
"show": false
}
},
{
"type": "gauge",
"min": 0,
"max": 100,
"startAngle": 90,
"endAngle": -270,
"center": [
"50%",
"50%"
],
"radius": "86%",
"pointer": {
"show": false
},
"axisLine": {
"lineStyle": {
"width": 0
}
},
"progress": {
"clip": false,
"show": true,
"width": 16,
"roundCap": true,
"itemStyle": {
"borderColor": "#464646",
"borderWidth": 1
}
},
"axisTick": {
"show": false
},
"splitLine": {
"show": false
},
"axisLabel": {
"show": false
},
"title": {
"show": false
},
"detail": {
"rich": {
"unit": {
"padding": [
0,
0,
0,
2
],
"fontSize": "10%",
"fontWeight": 400,
"lineHeight": 22
},
"value": {
"fontSize": "20%",
"fontWeight": "bold",
"lineHeight": 22
}
},
"formatter": "{value|{value}}{unit| {unit}}",
"offsetCenter": [
0,
"10%"
],
"valueAnimation": true,
"width": 70,
"height": 24,
"borderWidth": 1,
"borderRadius": 14,
"color": "inherit",
"borderColor": "inherit"
}
}
]
}
```
## Speed meter gauge
JSON Example
```json
{
"media": [
{
"query": {
"maxHeight": 180
},
"option": {
"series": [
{
"detail": {
"rich": {
"unitFormatter": {
"padding": [
0,
0,
0,
4
],
"fontSize": 12,
"lineHeight": 20
},
"valueFormatter": {
"fontSize": 18,
"fontWeight": "bold",
"lineHeight": 20
}
},
"show": true,
"formatter": "{valueFormatter|{value}}{unitFormatter| {unit}}",
"offsetCenter": [
0,
"10%"
],
"valueAnimation": true
},
"pointer": {
"show": false
},
"axisLine": {
"lineStyle": {
"width": 14
}
},
"axisTick": {
"show": false
},
"axisLabel": {
"show": false
},
"splitLine": {
"show": false
}
}
]
}
},
{
"query": {
"maxHeight": 260
},
"option": {
"series": [
{
"detail": {
"rich": {
"unitFormatter": {
"padding": [
0,
0,
0,
4
],
"fontSize": 14,
"lineHeight": 24
},
"valueFormatter": {
"fontSize": 22,
"fontWeight": "bold",
"lineHeight": 24
}
},
"show": true,
"color": "inherit",
"formatter": "{valueFormatter|{value}}{unitFormatter| {unit}}",
"offsetCenter": [
0,
"15%"
],
"valueAnimation": true
},
"pointer": {
"show": true,
"itemStyle": {
"color": "auto"
}
},
"axisLine": {
"lineStyle": {
"width": 22
}
},
"axisTick": {
"show": true,
"length": 6,
"distance": -22,
"lineStyle": {
"color": "#fff",
"width": 2
},
"splitNumber": 1
},
"axisLabel": {
"show": false
},
"splitLine": {
"show": true,
"length": 18,
"distance": -22,
"lineStyle": {
"color": "#fff",
"width": 3
}
}
}
]
}
},
{
"query": {
"maxAspectRatio": 1.05
},
"option": {
"series": [
{
"detail": {
"rich": {
"unitFormatter": {
"fontSize": 16,
"lineHeight": 26
},
"valueFormatter": {
"fontSize": 24,
"lineHeight": 26
}
},
"offsetCenter": [
0,
"18%"
]
},
"axisLabel": {
"show": true,
"color": "inherit",
"distance": 26,
"fontSize": 14
}
}
]
}
}
],
"series": [
{
"max": 10,
"min": 0,
"type": "gauge",
"detail": {
"rich": {
"unitFormatter": {
"padding": [
0,
0,
0,
6
],
"fontSize": 18,
"lineHeight": 30
},
"valueFormatter": {
"fontSize": 28,
"fontWeight": "bold",
"lineHeight": 30
}
},
"show": true,
"color": "inherit",
"formatter": "{valueFormatter|{value}}{unitFormatter| {unit}}",
"offsetCenter": [
0,
"20%"
],
"valueAnimation": true
},
"pointer": {
"show": true,
"itemStyle": {
"color": "auto"
}
},
"axisLine": {
"lineStyle": {
"color": [
[
0.3,
"#67e0e3"
],
[
0.7,
"#37a2da"
],
[
1,
"#fd666d"
]
],
"width": 30
}
},
"axisTick": {
"show": true,
"length": 8,
"distance": -30,
"lineStyle": {
"color": "#fff",
"width": 2
},
"splitNumber": 1
},
"axisLabel": {
"show": true,
"color": "inherit",
"distance": 40,
"fontSize": 20
},
"splitLine": {
"show": true,
"length": 30,
"distance": -30,
"lineStyle": {
"color": "#fff",
"width": 4
}
}
}
]
}
```
## Pressure gauge
JSON Example
```json
{
"media": [
{
"query": {
"maxHeight": 165
},
"option": {
"series": [
{
"center": [
"50%",
"66%"
],
"detail": {
"rich": {
"u": {
"padding": [
0,
0,
0,
2
],
"fontSize": 9,
"lineHeight": 16
},
"v": {
"fontSize": 14,
"fontWeight": "bold",
"lineHeight": 16
}
},
"formatter": "{v|{value}}{u| {unit}}",
"borderWidth": 0,
"offsetCenter": [
0,
"8%"
]
},
"radius": "82%",
"axisLine": {
"lineStyle": {
"width": 14
}
},
"axisTick": {
"length": 4,
"distance": -22,
"lineStyle": {
"color": "#999999",
"width": 1
}
},
"axisLabel": {
"color": "#999999",
"distance": -18,
"fontSize": 8
},
"splitLine": {
"length": 8,
"distance": -26,
"lineStyle": {
"color": "#999999",
"width": 2
}
}
}
]
}
}
],
"series": [
{
"max": 2000,
"min": 0,
"type": "gauge",
"title": {
"show": false
},
"anchor": {
"show": false
},
"center": [
"50%",
"70%"
],
"detail": {
"rich": {
"u": {
"padding": [
0,
0,
0,
6
],
"fontSize": 14,
"lineHeight": 32
},
"v": {
"fontSize": 30,
"fontWeight": "bolder",
"lineHeight": 32
}
},
"color": "inherit",
"formatter": "{v|{value}}{u| {unit}}",
"borderWidth": 0,
"offsetCenter": [
0,
"-8%"
],
"valueAnimation": true
},
"radius": "84%",
"pointer": {
"show": false
},
"axisLine": {
"lineStyle": {
"color": [
[
1,
"#E9EDF2"
]
],
"width": 22
}
},
"axisTick": {
"length": 6,
"distance": -30,
"lineStyle": {
"color": "#999999",
"width": 2
},
"splitNumber": 5
},
"endAngle": -20,
"progress": {
"show": true,
"width": 22,
"itemStyle": {
"color": "#FFAB91"
}
},
"axisLabel": {
"color": "#999999",
"distance": -24,
"fontSize": 14
},
"splitLine": {
"length": 10,
"distance": -34,
"lineStyle": {
"color": "#999999",
"width": 3
}
},
"startAngle": 200,
"splitNumber": 10
},
{
"max": 2000,
"min": 0,
"type": "gauge",
"center": [
"50%",
"70%"
],
"detail": {
"show": false
},
"radius": "84%",
"pointer": {
"show": false
},
"axisLine": {
"show": false
},
"axisTick": {
"show": false
},
"endAngle": -20,
"progress": {
"show": true,
"width": 6,
"itemStyle": {
"color": "#FD7347"
}
},
"axisLabel": {
"show": false
},
"splitLine": {
"show": false
},
"startAngle": 200
}
]
}
```
## Humidity percentage
JSON Example
```json
{
"series": [
{
"type": "gauge",
"min": 0,
"max": 100,
"startAngle": 180,
"endAngle": 0,
"splitNumber": 8,
"center": [
"50%",
"75%"
],
"radius": "90%",
"axisLine": {
"lineStyle": {
"width": 6,
"color": [
[
0.3,
"#FF6E76"
],
[
0.6,
"#FDDD60"
],
[
0.8,
"#58D9F9"
],
[
1,
"#7CFFB2"
]
]
}
},
"pointer": {
"icon": "path://M12.8,0.7l12,40.1H0.7L12.8,0.7z",
"length": "12%",
"width": 20,
"offsetCenter": [
0,
"-60%"
],
"itemStyle": {
"color": "auto"
}
},
"axisTick": {
"length": 12,
"lineStyle": {
"color": "auto",
"width": 2
}
},
"splitLine": {
"length": 20,
"lineStyle": {
"color": "auto",
"width": 5
}
},
"axisLabel": {
"color": "auto",
"fontSize": 14,
"distance": -60,
"rotate": "tangential",
"formatter": "{value}"
},
"title": {
"show": false
},
"detail": {
"fontSize": 28,
"valueAnimation": true,
"offsetCenter": [
0,
"-35%"
],
"color": "inherit",
"rich": {
"v": {
"fontSize": 30,
"fontWeight": "bold",
"lineHeight": 36
},
"u": {
"fontSize": 14,
"lineHeight": 36,
"padding": [
0,
0,
0,
6
]
}
},
"formatter": "{v|{value}}{u| {unit}}"
}
}
]
}
```
---
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