我有一个c3条形图类别。我想格式化类别标签,以便能够将其截断到一定长度。但我无法理解。
以下是图表定义:
var chart;
chart = c3.generate({
padding: {
top: 20,
bottom: 20
},
data: {
columns: [
["Listeners",4,2,0],
["Listens",4,2,0]],
type: 'bar',
groups:[["Listeners", "Listens"]]
},
axis: {
x: {
type: 'category',
categories: ["012345678890", "012345678890", "012345678890"],
}
},
bar: {
width: {
ratio: 0.5 // this makes bar width 50% of length between ticks
}
},
legend: {
show: false
}
});
<link href="https://raw.githubusercontent.com/c3js/c3/0.4.11/c3.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
<script src="https://raw.githubusercontent.com/c3js/c3/0.4.11/c3.js"></script>
<div id="chart" class="c3" style="max-height: 280px; position: relative;"></div>
我尝试添加它来格式化x轴定义中的刻度,但它抱怨图表未定义
tick:{format:function(x){return chart.categories()[x] .substring(0,10); }}
提前致谢!
答案 0 :(得分:2)
当然,您只是声明没有值的变量var chart;
,未定义。
尝试在函数c3.generate()
之前创建图表配置,然后将配置作为参数传递。
var config = {
padding : {
top : 20,
bottom : 20
},
data : {
columns : [ [ "Listeners", 4, 2, 0 ], [ "Listens", 4, 2, 0 ] ],
type : 'bar',
groups : [ [ "Listeners", "Listens" ] ]
},
axis : {
x : {
type: 'category',
categories: ["012345678890", "012345678890","012345678890"],
}
},
bar : {
width : {
ratio : 0.5
}
},
legend : {
show : false
}
};
config.axis.x.tick = {
format : function(x) {
return config.axis.x.categories[x].substring(0,10)
}
};
var chart = c3.generate(config);
答案 1 :(得分:0)
在您的代码中,您已在x轴定义中命名了类别,我不确定您为什么不更改标签?
**示例**
var chart;
chart = c3.generate({
padding: {
top: 20,
bottom: 20
},
data: {
columns: [
["Listeners",4,2,0],
["Listens",4,2,0]],
type: 'bar',
groups:[["Listeners", "Listens"]]
},
axis: {
x: {
type: 'category',
_comment: "THIS IS WHERE YOU SET YOUR CATEGORY LABELS",
categories: ["Label1", "Label2", "Label3"],
}
},
bar: {
width: {
ratio: 0.5 // this makes bar width 50% of length between ticks
}
},
legend: {
show: false
}
});
&#13;
<link href="https://cdnjs.cloudflare.com/ajax/libs/c3/0.4.11/c3.min.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/c3/0.4.11/c3.min.js"></script>
<div id="chart" class="c3" style="max-height: 280px; position: relative;"></div>
&#13;