質問編集履歴
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###前提・実現したいこと
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chart.js
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chart.jsを使用しての横軸のラベルの書式の設定方法を教えてください。
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###発生している問題・エラーメッセージ
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横軸ラベルの書式が反映されません。
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chart.js 2.1 を読み込んでます。
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<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.1.4/Chart.min.js"></script>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.1.4/Chart.min.js"></script>
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```
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エラーメッセージ
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```
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###該当のソースコード
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```javascript
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var timeFormat = 'MM/DD/YYYY HH:mm';
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var config = {
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type: 'line',
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data: {
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labels: [ // Date Objects
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"05/12/2017 01:20",
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"05/12/2017 02:20",
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"05/12/2017 03:20",
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"05/12/2017 04:20",
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"05/12/2017 10:20",
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"05/12/2017 15:20",
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"05/12/2017 20:20"
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],
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datasets: [
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{
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label: "Dataset with point data",
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backgroundColor: color(window.chartColors.green).alpha(0.5).rgbString(),
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borderColor: window.chartColors.green,
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fill: false,
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data: [{
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x: "05/12/2017 01:29",
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y: 10
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}, {
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x: "05/12/2017 10:29",
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y: 20
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}, {
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x: "05/12/2017 19:29",
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y: 30
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}, {
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x: "05/12/2017 22:29",
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y: 2
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}
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],
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}]
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}
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,
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options: {
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title:{
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display: true,
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text: "Chart.js Time Scale"
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},
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scales: {
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xAxes: [{
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type: "time",
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time: {
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format: timeFormat,
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},
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scaleLabel: {
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display: true,
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labelString: '---Time---'
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}
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//displayFormats: 'h:mm:ss' // NG
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//displayFormats: 'HH:mm' // NG
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//displayFormats: timeFormat // NG
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//displayFormats: "minute" // NG
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//displayFormats: 'MMM YYYY' // NG
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}, ],
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yAxes: [{
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ticks: {
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min: 0, // 原点0
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max: 70
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},
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scaleLabel: {
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display: true,
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labelString: 'value'
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}
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}]
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},
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}
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};
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```
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###試したこと
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displayFormats を使用したのですが、変化なしでした。よろしくお願いします。
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//displayFormats: 'h:mm:ss' // NG
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//displayFormats: 'HH:mm' // NG
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//displayFormats: timeFormat // NG
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//displayFormats: "minute" // NG
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//displayFormats: 'MMM YYYY' // NG
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###補足情報(言語/FW/ツール等のバージョンなど)
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labels: [ // Date Objects
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"05/12/2017 01:20",
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"05/12/2017 02:20",
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"05/12/2017 03:20",
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"05/12/2017 04:20",
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"05/12/2017 10:20",
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"05/12/2017 15:20",
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"05/12/2017 20:20"
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],
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datasets: [
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{
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label: "Dataset with point data",
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backgroundColor: color(window.chartColors.green).alpha(0.5).rgbString(),
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borderColor: window.chartColors.green,
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fill: false,
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data: [{
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x: "05/12/2017 01:29",
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y: 10
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}, {
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x: "05/12/2017 10:29",
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y: 20
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}, {
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x: "05/12/2017 19:29",
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y: 30
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}, {
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x: "05/12/2017 22:29",
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y: 2
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}
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],
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}]
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}
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,
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options: {
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より詳細な情報
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display: true,
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text: "Chart.js Time Scale"
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},
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scales: {
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xAxes: [{
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type: "time",
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time: {
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format: timeFormat,
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},
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scaleLabel: {
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display: true,
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labelString: '---Time---'
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}
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//displayFormats: 'h:mm:ss' // NG
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//displayFormats: 'HH:mm' // NG
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//displayFormats: timeFormat // NG
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//displayFormats: "minute" // NG
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//displayFormats: 'MMM YYYY' // NG
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}, ],
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yAxes: [{
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ticks: {
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min: 0, // 原点0
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max: 70
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},
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scaleLabel: {
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display: true,
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labelString: 'value'
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}
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}]
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};
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