0👍
Two small changes will achieve the desired result:
- set
stepSize: 2
to ‘show labels on X axis every 2 hours (0h, 2h, 4h…)’ - remove
ticks: { source: 'data' }
as that:
generates ticks from data (including labels from data {t|x|y} objects)”
Here’s a working example based on the posted code:
var ctx = document.getElementById('myChart').getContext('2d');
var myChart = new Chart(ctx, {
type: 'line',
data: {
//labels: ['0h', '2h', '4h', '6h', '8h', '10h', '12h', '14h', '16h', '18h', '20h', '22h', '0h'],
datasets: [{
label: 'AAA1111',
//xAxisID: 'Hora',
//yAxisID: 'Velocidade',
data: [{
t: new Date("2015-3-15 12:30"),
y: 12
},
{
t: new Date("2015-3-15 14:40"),
y: 45
},
{
t: new Date("2015-3-15 17:50"),
y: 77
}
],
borderColor: 'rgba(255, 0, 0, 1)',
borderWidth: 4,
fill: false,
lineTension: 0,
lineJoint: "round",
spanGaps: true
}]
},
options: {
scales: {
xAxes: [{
type: 'time',
distribution: 'linear',
time: {
unit: 'hour',
stepSize: 2
}
}]
}
}
});
<script src="https://cdn.jsdelivr.net/npm/chart.js@2.9.3/dist/Chart.bundle.min.js"></script>
<canvas id="myChart"></canvas>
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Source:stackexchange.com