我正在使用http://www.chartjs.org/上的折线图
正如你可以看到Y轴的最大值(130)和最小值(60)是自动选择的，我想要最大值= 500和最小值=0。这可能吗?
当前回答
var config = { type: 'line', data: { labels: ["January", "February", "March", "April", "May", "June", "July"], datasets: [{ label: "My First dataset", data: [10, 80, 56, 60, 6, 45, 15], fill: false, backgroundColor: "#eebcde ", borderColor: "#eebcde", borderCapStyle: 'butt', borderDash: [5, 5], }] }, options: { responsive: true, legend: { position: 'bottom', }, hover: { mode: 'label' }, scales: { xAxes: [{ display: true, scaleLabel: { display: true, labelString: 'Month' } }], yAxes: [{ display: true, ticks: { beginAtZero: true, steps: 10, stepValue: 5, max: 100 } }] }, title: { display: true, text: 'Chart.js Line Chart - Legend' } } }; var ctx = document.getElementById("canvas").getContext("2d"); new Chart(ctx, config); <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.2.1/Chart.bundle.js"></script> <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <body> <canvas id="canvas"></canvas> </body>
其他回答
你必须覆盖比例，试试这个:(适用于ChartJS v1.x)
window.onload = function(){
var ctx = document.getElementById("canvas").getContext("2d");
window.myLine = new Chart(ctx).Line(lineChartData, {
scaleOverride : true,
scaleSteps : 10,
scaleStepWidth : 50,
scaleStartValue : 0
});
}
由于上面的建议对我的charts.js 2.1.4没有任何帮助，我通过将值0添加到我的数据集数组(但没有额外的标签)来解决它:
statsData.push(0);
[...]
var myChart = new Chart(ctx, {
type: 'horizontalBar',
data: {
datasets: [{
data: statsData,
[...]
var config = { type: 'line', data: { labels: ["January", "February", "March", "April", "May", "June", "July"], datasets: [{ label: "My First dataset", data: [10, 80, 56, 60, 6, 45, 15], fill: false, backgroundColor: "#eebcde ", borderColor: "#eebcde", borderCapStyle: 'butt', borderDash: [5, 5], }] }, options: { responsive: true, legend: { position: 'bottom', }, hover: { mode: 'label' }, scales: { xAxes: [{ display: true, scaleLabel: { display: true, labelString: 'Month' } }], yAxes: [{ display: true, ticks: { beginAtZero: true, steps: 10, stepValue: 5, max: 100 } }] }, title: { display: true, text: 'Chart.js Line Chart - Legend' } } }; var ctx = document.getElementById("canvas").getContext("2d"); new Chart(ctx, config); <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.2.1/Chart.bundle.js"></script> <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <body> <canvas id="canvas"></canvas> </body>
对于Chart.js v3.2.0，这样做:
let options = {
scales: {
y: {
suggestedMin: 0,
suggestedMax: 69
},
x: {
suggestedMin: 0,
suggestedMax: 420
}
}
}
文档:https://www.chartjs.org/docs/latest/axes/ axis-range-settings
在我的例子中，我在yaxis ticks中使用了一个回调， 我的值是百分比，当它达到100%时，它不显示点，我使用这个:
yAxes: [{
ticks: {
beginAtZero: true,
steps: 10,
stepValue: 5,
min: 0,
max: 100.1,
callback: function(value, index, values) {
if (value !== 100.1) {
return values[index]
}
}
}
}],
而且效果很好。
