How to rotate custom marker in chart.js?
How to rotate custom marker in chart.js?
1 answer
by
edmond_brakus ,
10 months ago
@kadin
To rotate a custom marker in Chart.js, you can use the 'rotation' property for the marker options.
Here is an example:
- First, create a custom marker using an image or icon. You can use an image URL or an icon from a library like Font Awesome.
1 2 |
var customMarker = new Image(); customMarker.src = 'path-to-custom-marker-image.png'; |
- In the chart options, define the marker options and set the 'rotation' property to the desired rotation angle in degrees.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 |
var options = {
scales: {
// Add your scales options here
},
plugins: {
legend: {
// Add your legend options here
},
tooltip: {
// Add your tooltip options here
},
elements: {
point: {
rotation: 45, // Set the rotation angle here
backgroundColor: customMarker // Use the custom marker image
}
}
}
};
|
- Update the chart configuration and render the chart.
1 2 3 4 5 6 7 8 9 |
var config = {
type: 'line',
data: {
// Add your chart data here
},
options: options
};
var myChart = new Chart(ctx, config);
|
The marker will now be rotated at the specified angle. You can adjust the rotation angle according to your requirements.