How to get point coordinates in chart.js ****ter plot?

Member

by dedrick , in category: Javascript , 2 months ago

How to get point coordinates in chart.js ****ter plot?

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1 answer

Member

by kadin , 20 days ago

@dedrick 

To get the point coordinates in a ****ter plot created using Chart.js, you can use the getDatasetMeta and getPixelForValue methods provided by the Chart.js library. Here is an example code snippet to demonstrate how you can get the point coordinates:

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// Get the chart instance
var ****terChart = new Chart(ctx, {
    type: '****ter',
    data: {
        datasets: [{
            label: 'Scatter Dataset',
            data: [{
                x: 10,
                y: 20
            }, {
                x: 15,
                y: 25
            }]
        }]
    },
});

// Get the metadata for the first dataset
var meta = ****terChart.getDatasetMeta(0);

// Get the pixel coordinates for each data point
var point1 = meta.data[0].getCenterPoint();
var point2 = meta.data[1].getCenterPoint();

console.log('Point 1 coordinates: ', { x: point1.x, y: point1.y });
console.log('Point 2 coordinates: ', { x: point2.x, y: point2.y });


In the above code snippet, we first create a ****ter plot using Chart.js and then access the metadata for the first dataset using the getDatasetMeta method. We can then get the center point coordinates for each data point using the getCenterPoint method on each data point object within the dataset metadata.


You can use these pixel coordinates to perform additional calculations or display them as needed in your application.