Gauge with gradient fill

<!-- Styles -->
<style>
#chartdiv {
  width: 100%;
  height: 500px;
}
</style>

<!-- Resources -->
<script src="https://cdn.amcharts.com/lib/4/core.js"></script>
<script src="https://cdn.amcharts.com/lib/4/charts.js"></script>
<script src="https://cdn.amcharts.com/lib/4/themes/animated.js"></script>

<!-- Chart code -->
<script>
am4core.ready(function() {

// Themes begin
am4core.useTheme(am4themes_animated);
// Themes end



// create chart
var chart = am4core.create("chartdiv", am4charts.GaugeChart);
chart.innerRadius = -15;

var axis = chart.xAxes.push(new am4charts.ValueAxis());
axis.min = 0;
axis.max = 100;
axis.strictMinMax = true;

var colorSet = new am4core.ColorSet();

var gradient = new am4core.LinearGradient();
gradient.stops.push({color:am4core.color("red")})
gradient.stops.push({color:am4core.color("yellow")})
gradient.stops.push({color:am4core.color("green")})

axis.renderer.line.stroke = gradient;
axis.renderer.line.strokeWidth = 15;
axis.renderer.line.strokeOpacity = 1;

axis.renderer.grid.template.disabled = true;

var hand = chart.hands.push(new am4charts.ClockHand());
hand.radius = am4core.percent(97);

setInterval(function() {
    hand.showValue(Math.random() * 100, 1000, am4core.ease.cubicOut);
}, 2000);


}); // end am4core.ready()
</script>

<!-- HTML -->
<div id="chartdiv"></div>

/* Imports */
import * as am4core from "@amcharts/amcharts4/core";
import * as am4charts from "@amcharts/amcharts4/charts";
import am4themes_animated from "@amcharts/amcharts4/themes/animated";

/* Chart code */
// Themes begin
am4core.useTheme(am4themes_animated);
// Themes end



// create chart
let chart = am4core.create("chartdiv", am4charts.GaugeChart);
chart.innerRadius = -15;

let axis = chart.xAxes.push(new am4charts.ValueAxis());
axis.min = 0;
axis.max = 100;
axis.strictMinMax = true;

let colorSet = new am4core.ColorSet();

let gradient = new am4core.LinearGradient();
gradient.stops.push({color:am4core.color("red")})
gradient.stops.push({color:am4core.color("yellow")})
gradient.stops.push({color:am4core.color("green")})

axis.renderer.line.stroke = gradient;
axis.renderer.line.strokeWidth = 15;
axis.renderer.line.strokeOpacity = 1;

axis.renderer.grid.template.disabled = true;

let hand = chart.hands.push(new am4charts.ClockHand());
hand.radius = am4core.percent(97);

setInterval(function() {
    hand.showValue(Math.random() * 100, 1000, am4core.ease.cubicOut);
}, 2000);