[英]How can I create a stacked bar chart with Charts.JS that displays relative rather than absolute values?
[英]Charts Js Stacked Bar Graph displays no values?
我有一個這樣的 javascript map..
var Severity = {
3M:[0, 3, 1, 0, 0],
5T:[0, 0, 1, 0, 0],
6S:[0, 0, 2, 0, 0]
}
還有一個 JS function 調用 Stacked Chart Bar。 在這里,我創建了一個 JS function,它從 jsp 頁面獲取 id 和 map。 Map 結構同上定義。 我想顯示圖表,其中 x 軸上的數據是 map 中的鍵,y 軸上是 5 個元素的堆疊數據。
function StackedBar(id,Severity) {
var label = Object.keys(Severity); // getting the labels
var Critical = [];
var High = [];
var Medium = [];
var Low = [];
var Others = [];
for(let i=0;i<label.length;i++){ //assigning the data to arrays created
Critical.push(Severity[label[i]][0]);
High.push(Severity[label[i]][1]);
Medium.push(Severity[label[i]][2]);
Low.push(Severity[label[i]][3]);
Others.push(Severity[label[i]][4]);
}
var ctxL = document.getElementById(id).getContext('2d'); //id from the html canvas
var chart = new Chart(ctxL, {
type: 'bar',
data: {
labels: label,
datasets: [
{
label: 'Critical',
data: Critical,
backgroundColor: '#aa000e'
},
{
label: 'High',
data: High,
backgroundColor: '#e65905'
},
{
label: 'Medium',
data: Medium,
backgroundColor: '#e00ce6'
},
{
label: 'Low',
data: Low,
backgroundColor: '#b8ab16'
},
{
label: 'Others',
data: Others,
backgroundColor: '#00aaaa'
}
]
},
options: {
responsive: true,
legend: {
position: 'right'
},
scales: {
xAxes: [{
stacked: true
}],
yAxes: [{
stacked: true
}]
}
}
});
}
此處顯示圖表,我在 x 軸上得到 label...但圖表值未顯示,我收到以下錯誤...
Html
<canvas id="overall"></canvas>
<script>StackedBar('overall',Overall);</script>
我想知道出了什么問題,並希望我能幫助解決這個問題......
我將以上內容放在一個文件中並且它有效(盡管我必須在通話中將“總體”更改為“嚴重性”)。 所以我希望您使用的東西可能與上面的示例不匹配。
我使用的版本:
<html>
<body>
<canvas id="overall"></canvas>
</body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.min.js"></script>
<script>
var Severity = {
"3M": [0, 3, 1, 0, 0],
"5T": [0, 0, 1, 0, 0],
"6S": [0, 0, 2, 0, 0]
};
</script>
<script>
function StackedBar(id, Severity) {
var label = Object.keys(Severity); // getting the labels
var Critical = [];
var High = [];
var Medium = [];
var Low = [];
var Others = [];
for (let i = 0; i < label.length; i++) { //assigning the data to arrays created
Critical.push(Severity[label[i]][0]);
High.push(Severity[label[i]][1]);
Medium.push(Severity[label[i]][2]);
Low.push(Severity[label[i]][3]);
Others.push(Severity[label[i]][4]);
}
var ctxL = document.getElementById(id).getContext('2d'); //id from the html canvas
var chart = new Chart(ctxL, {
type: 'bar',
data: {
labels: label,
datasets: [
{
label: 'Critical',
data: Critical,
backgroundColor: '#aa000e'
},
{
label: 'High',
data: High,
backgroundColor: '#e65905'
},
{
label: 'Medium',
data: Medium,
backgroundColor: '#e00ce6'
},
{
label: 'Low',
data: Low,
backgroundColor: '#b8ab16'
},
{
label: 'Others',
data: Others,
backgroundColor: '#00aaaa'
}
]
},
options: {
responsive: true,
legend: {
position: 'right'
},
scales: {
xAxes: [{
stacked: true
}],
yAxes: [{
stacked: true
}]
}
}
});
}
</script>
<script>StackedBar('overall', Severity);</script>
</html>
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