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var marksCanvas = document.getElementById("canvas");
function createRadialGradient3(context) {
const chartArea = context.chart.chartArea;
if (!chartArea) {
// This case happens on initial chart load
return;
}
const chartWidth = chartArea.right - chartArea.left;
const chartHeight = chartArea.bottom - chartArea.top;
width = chartWidth;
height = chartHeight;
const centerX = (chartArea.left + chartArea.right) / 2;
const centerY = (chartArea.top + chartArea.bottom) / 2;
const ctx = context.chart.ctx;
var gradient = ctx.createConicGradient(-1.0472, centerX, centerY);
// The pattern is 30 degrees of blend between quadrants
// 60 degrees of pure color in the quadrant
gradient.addColorStop(0, 'rgba(78, 190, 235, .40)'); //blue
gradient.addColorStop(.16667, 'rgba(78, 190, 235, .40)'); //blue
gradient.addColorStop(0.25, 'rgba(255, 152, 49, .40)'); //orange
gradient.addColorStop(0.41667, 'rgba(255, 152, 49, .40)'); //orange
gradient.addColorStop(0.5, 'rgba(96, 230, 225, .40)'); // turqoise
gradient.addColorStop(0.66667, 'rgba(96, 230, 225, .40)'); // turqoise
gradient.addColorStop(0.75, 'rgba(45, 183, 87, .40)'); //green
gradient.addColorStop(0.91667, 'rgba(45, 183, 87, .40)'); //green
gradient.addColorStop(1, 'rgba(78, 190, 235, .40)'); //blue
// Set the fill style and draw a rectangle
ctx.fillStyle = gradient;
ctx.fillRect(chartArea.left, chartArea.top, chartWidth, chartHeight);
return gradient;
}
const data = {
labels: [
'Including',
'Aligning',
'Owning',
'Suggesting',
'Analyzing',
'Summarizing',
'Listening',
'Empathasizing',
'Validating',
'Vulnerabilty',
'Transparaency',
'Recognizing',
],
datasets: [{
label: 'My First Dataset',
data: [65, 59, 90, 81, 56, 55, 40,80,76,68,23,47],
fill: true,
backgroundColor: function(context) {
return createRadialGradient3(context);
},
borderColor: 'rgba(255, 99, 132, 0)',
pointBackgroundColor: 'rgba(255, 99, 132,0)',
pointBorderColor: '#fff',
pointHoverBackgroundColor: '#fff',
pointHoverBorderColor: 'rgb(255, 99, 132)'
}]
};
const config = {
type: 'radar',
data: data,
options: {
elements: {
line: {
borderWidth: 3
},
}
},
};
var radarChart = new Chart(marksCanvas, config);
Source:stackexchange.com