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Chartjs Line Color Between Points Based on Boolean in Dataset
原标题:

I m trying to color in the line in between data points in a chartjs line graph. At the moment its just applying the borderColor to a single data point and not to the line.

Current Code:

            const data = {
                labels: rawData.map(row => row.t),
                datasets : [{
                    data: rawData.map(row => ({x: row.t, y: row.x})),
                    fill: false,
                    pointRadius: 1,
                    borderColor: rawData.map(row => getBorderColor(row)),
                }]
            }

            function getBorderColor(row) {
                let color
                if (row.is_sp && !row.is_qp) {
                    color =  #00ff00 
                } else if (row.is_qp && !row.is_sp) {
                    color =  #ff0000 
                } else {
                    color =  #000000 
                }
                return color
            }

            const options = { 
                responsive: true, 
                maintainAspectRatio: true, 
                fill: false,
                interaction: {
                    intersect: false
                },
                radius: 0,
                plugins: { 
                    legend: {
                        display: false
                    } 
                }
            }
            
            chartInstance = new Chart(chart.value, {
                type:  line ,
                data,
                options,
            })

Output: output graph

Appreciate it.

I tried using the segments feature in chartjs but couldnt get it to propoerly identify when the color should stop and start.

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