我第一次尝试设置C3图表。
我在他们的官方网站上关注了这个例子并获得了以下HTML:
<section class="panel panel-default">
<header class="panel-heading font-bold">C3 Test</header>
<section class="panel-body">
<div id="chart"></div>
</section>
</section>
为此,我有以下javascript:
var chart = c3.generate({
bindto: '#chart',
data: {
columns: [
['data1', 30, 200, 100, 400, 150, 250],
['data2', 50, 20, 10, 40, 15, 25]
],
axes: {
data2: 'y2'
},
types: {
data2: 'bar'
}
},
axis: {
y: {
label: {
text: 'Y Label',
position: 'outer-middle'
},
tick: {
format: d3.format("$,") // ADD
}
},
y2: {
show: true,
label: {
text: 'Y2 Label',
position: 'outer-middle'
}
}
}
});
然而,当我运行此操作时,我收到以下错误:
Uncaught TypeError: Cannot read property 'width' of undefined c3.min.js:3
有谁知道问题可能是什么?
答案 0 :(得分:6)
答案 1 :(得分:0)
您还可以在SCRIPT元素上添加defer属性。它指示脚本标签的内容要在页面加载后才能执行。
因此,您将得到以下内容:
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;
class TestClass {
public static void main(String args[]) throws Exception {
Scanner sc = new Scanner(System.in);
Set<Integer> perfectNumbers = new HashSet<>();
for (int i = 0; i <= 20; i++) {
perfectNumbers.add(i * i * i);
}
for (int i = 1; i <= 44; i++) {
perfectNumbers.add(i * i);
}
int t = sc.nextInt();
for (int k = 0; k < t; k++) {
int db = 0;
int n = sc.nextInt();
int[] a = new int[1001];
int[] b = new int[1001];
int[] numbers = new int[n];
for (int j = 0; j < n; j++) {
int x = sc.nextInt();
numbers[j] = x;
for (Integer perfect : perfectNumbers) {
if (x == perfect - x) {
b[x]++;
} else if (perfect - x >= 0 && perfect - x <= 1000)
a[perfect - x]++;
}
}
for (int j = 0; j < n; j++) {
db += a[numbers[j]];
}
for (int j = 0; j <= 1000; j++) {
if (b[j] > 1) {
db += b[j] * (b[j] - 1);
}
}
System.out.println(db / 2);
}
}
}