我正在尝试使用chart.js实现类似目的。我想显示每个年龄段的男性/女性数据:
这是我的图表选项:
var options = {
layout: {
padding: {
top: 5,
}
},
scales:
{
yAxes: [{
display: true,
barPercentage: 0.4,
ticks: {
fontSize: 12
},
stacked: true,
}],
xAxes: [{
stacked: true,
}]
},
responsive: true,
maintainAspectRatio: false,
legend: {
display: false,
},
animation: {
animateScale: true,
animateRotate: true
},
};
var opt = {
type: "horizontalBar",
data: {
labels: ageGroup,
datasets: [{
label: 'Male',
data: maleData,
backgroundColor: '#2196F3',
hoverBackgroundColor: '#2196F3'
},
{
label: 'Female',
data: femaleData,
backgroundColor: '#E91E63',
hoverBackgroundColor: '#E91E63'
}]
},
options: options
};
我将femaleData数组中的正数更改为负数以实现上述结果:
for (var i = 0; i < femaleData.length; i++) {
femaleData[i] = -Math.abs(femaleData[i]);
}
但是,如您所见,由于左侧已获得更多数据,因此将其0推到右侧时y轴并未居中。我什至不确定这是否是将图表设置为相反方向的正确方法。有任何想法吗?
先谢谢了!
最佳答案
根据OP评论部分中提到的要求
ᴏɴx-ᴀxɪꜱ
对x轴刻度使用以下回调函数:
callback: function(t, i) {
return t < 0 ? Math.abs(t) : t;
}
ꜱʜᴏᴡᴘᴏꜱɪᴛɪᴠᴇᴠᴀʟᴜᴇᴛᴏᴏʟᴛɪᴘ
使用以下回调函数作为工具提示:
callbacks: {
label: function(t, d) {
var datasetLabel = d.datasets[t.datasetIndex].label;
var xLabel = Math.abs(t.xLabel);
return datasetLabel + ': ' + xLabel;
}
}
ᴡᴏʀᴋɪɴɢᴇxᴀᴍᴘʟᴇ
var ageGroup = ['0-10', '11-20', '21-30', '31-40', '41-50', '51-60', '61-70', '71-80', '80+'];
var maleData = [30, 0, 0, 0, 10, 0, 0, 0, 0];
var femaleData = [0, 0, 0, -20, -50, -20, 0, 0, 0];
var options = {
layout: {
padding: {
top: 5,
}
},
scales: {
yAxes: [{
display: true,
barPercentage: 0.4,
ticks: {
fontSize: 12
},
stacked: true,
}],
xAxes: [{
stacked: true,
ticks: {
callback: function(t, i) {
return t < 0 ? Math.abs(t) : t;
}
}
}]
},
tooltips: {
callbacks: {
label: function(t, d) {
var datasetLabel = d.datasets[t.datasetIndex].label;
var xLabel = Math.abs(t.xLabel);
return datasetLabel + ': ' + xLabel;
}
}
},
responsive: true,
//maintainAspectRatio: false,
legend: {
display: false,
},
animation: {
animateScale: true,
animateRotate: true
},
};
var opt = {
type: "horizontalBar",
data: {
labels: ageGroup,
datasets: [{
label: 'Male',
data: maleData,
backgroundColor: '#2196F3',
hoverBackgroundColor: '#2196F3'
}, {
label: 'Female',
data: femaleData,
backgroundColor: '#E91E63',
hoverBackgroundColor: '#E91E63'
}]
},
options: options
};
new Chart(ctx, opt);
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.6.0/Chart.min.js"></script>
<canvas id="ctx"></canvas>