I'm using chart.js to plot a dataset, which is a ratio of two variables and it ranges from 10 to -10. But most of the time it swings around y=1.
I'm trying to plot a filled line plot of this dataset with the help of chart.js3. How do I change the direction of fill when it goes below 1(i.e. y<1) instead of default y=0?
You can set an object for the fill in which you can configure this:
const options = {
type: 'line',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
borderColor: 'orange',
fill: {
target: {
value: 8
},
above: 'rgb(255, 0, 0)', // Area will be red above the value 8
below: 'rgb(0, 0, 255)' // And blue below the value 8
}
}]
},
options: {}
}
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/3.7.1/chart.js"></script>
</body>