chartjs中是否有一种方法可以使条形图跨越零线？举个例子，可以说我有一个带有
的酒吧data:[x:1, y:100]
我如何告诉它将y轴的范围从-100扩展到100（而不是从0扩展到100）？
我在这里有一个游乐场，每个小节我可以做负数或正数，但一个小节不能同时做。
[min, max]指定各个条。 <html>
<head>
<title>Floating Bars</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.min.js"></script>
<style>
canvas {
-moz-user-select: none;
-webkit-user-select: none;
-ms-user-select: none;
}
</style>
</head>
<body>
<div>
<canvas id="canvas" height="120"></canvas>
</div>
<script>
var chartData = {
labels: [1,2,3,4,5,6],
datasets: [{
type: 'bar',
label: 'Red Bar',
borderColor: 'black',
borderWidth: 1,
backgroundColor: 'rgba(128,0,0,0.2)',
data: [[0, 100], [-100, 100], [-30, 40], 0, 0, 0],
}, {
type: 'bar',
label: 'Green Bar',
backgroundColor: 'rgba(0,128,0,0.2)',
borderColor: 'black',
borderWidth: 1,
data: [0, 0, 0, 0, [-50, 70], 100],
}
]
};
window.onload = function() {
var ctx = document.getElementById('canvas').getContext('2d');
window.myBar = new Chart(ctx, {
type: 'bar',
data: chartData,
options: {
scaleBeginAtZero: false,
responsive: true,
spanGaps: true,
tooltips: {
mode: 'index',
intersect: true
},
scales: {
xAxes: [{
gridLines: {
display: false
},
}],
yAxes: [{
type: 'linear',
ticks: {
beginAtZero: false,
min:-100,
max:100,
stepSize:30
}
}],
}
}
});
};
</script>
</body>
</html>