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Acceda a yLabel para una barra específica en chartJs sin hacer clic

Estoy trabajando en chartJs donde el color de fondo de la barra debe determinarse en función del valor en yLabel.

¿Cómo podemos acceder a yLabel para una barra específica en chartjs para hacer una comparación?

 const waterFChart = new Chart(canvasRef.current, { plugins: [ChartDataLabels], type: "bar", data: { labels: ["Label 1", "Label 2", "Label 3", "Label 4", "Label 5"], datasets: [ { label: 'Failures', type: "bar", data: [10, 20, 30, 41, 51], //background color is assigned based on if yLabel of bar matches testValue backgroundColor: ylabel === testvalue ? "red" : "yellow", //how can we access yLabelhere hoverBackgroundColor: darkBar, stack: 'Stack 1', } } );
about 4 years ago · Juan Pablo Isaza
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Puede hacer opciones programables como esta:

 const yVal = 12; const primeCrolor = "green"; const secondColor = "red" const options = { type: 'bar', data: { labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"], datasets: [{ label: '# of Votes', data: [12, 19, 3, 5, 2, 3], backgroundColor: (ctx) => { if (!ctx.parsed) { return secondColor } const allTicks = ctx.chart.scales.y.ticks.map(e => e.value); return (allTicks.includes(yVal) && ctx.parsed.y === yVal) ? primeCrolor : secondColor; } }] }, options: { // Scale config only needed for example to force the correct labels scales: { y: { min: 0, max: 20, ticks: { stepSize: 2 } } } } } const ctx = document.getElementById('chartJSContainer').getContext('2d'); new Chart(ctx, options);
 <body> <canvas id="chartJSContainer" width="600" height="400"></canvas> <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.5.1/chart.js"></script> </body>

about 4 years ago · Juan Pablo Isaza Report
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