I'm working with a graph that has four datasets. Two of them show the count of values, while the other two represent a goal or target for each value. I want to group all tooltips together when hovering over the graph, but exclude the tooltips for the goal lines. How can this be achieved?
The code below includes some sample data and the tooltip displays all labels.
var ctx = document.getElementById('myChart');
var myChart = new Chart(ctx, {
type: 'line',
data: {
labels: ["January", "February", "March", "April", "May", "June"],
datasets: [{
label: 'Count type 1',
data: [48, 33, 32, 35, 42, 38],
backgroundColor: 'transparent',
borderColor: 'rgba(255, 204, 0, 1)',
fillColor: 'rgba(255, 204, 0, 0.1)',
pointBorderColor: 'transparent',
pointBackgroundColor: 'rgba(255, 204, 0, 1)',
pointRadius: 4,
borderWidth: 2,
lineTension: 0.3
},
{
label: 'Goal 1',
data: [48.000, 47.040, 46.080, 45.120, 44.160, 43.200],
backgroundColor: 'transparent',
borderColor: 'rgba(0, 255, 0, 1)',
fillColor: 'transparent',
pointBorderColor: 'transparent',
pointRadius: 0,
borderWidth: 0.4,
lineTension: 0
},
{
label: 'Count type 2',
data: [24, 37, 30, 22, 29, 18],
backgroundColor: 'transparent',
borderColor: 'rgba(255, 0, 0, 1)',
fillColor: 'rgba(255, 0, 0, 0.1)',
pointBorderColor: 'transparent',
pointBackgroundColor: 'rgba(255, 0, 0, 1)',
pointRadius: 4,
borderWidth: 2,
lineTension: 0.3
},
{
label: 'Goal 2',
data: [24.000, 23.520, 23.040, 22.560, 22.080, 21.600],
backgroundColor: 'transparent',
borderColor: 'rgba(0, 255, 0, 1)',
pointBorderColor: 'transparent',
pointRadius: 0,
borderWidth: 0.4,
lineTension: 0
}
]
},
options: {
tooltips: {
enabled: true,
mode: 'index',
intersect: false,
}
}
})<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.8.0/Chart.min.js"></script>
<canvas id="myChart"></canvas>I have experimented with different approaches, but have not been able to achieve the desired result without issues like flickering tooltips or only excluding one dataset.