如何在角度图表条形图中有纯色条

2022-01-22 00:00:00 charts angularjs javascript chart.js angular-chart

我正在使用 angular-chart(基于 chart.js)创建一些条形图，但无法获得我想要的条形样式.我希望条形图是这样的纯色:

I'm using angular-chart (based on chart.js) to create some bar charts and am having trouble getting the bar styling I want. I want the bars to be solid colors like this:

但我不知道如何摆脱 chart.js 默认添加的 alpha:

But I can't figure out how to get rid of the alpha that chart.js adds by default:

我的 html 看起来像这样:

My html looks like this:

  <body ng-app="myApp" ng-controller="myController as ctrl">
    <canvas id="outreach" class="chart chart-bar" 
        chart-labels="ctrl.socialChart.labels" 
        chart-data="ctrl.socialChart.data" 
        chart-series="ctrl.socialChart.series"
        chart-colors="ctrl.socialChart.colors"
        chart-options="ctrl.socialChart.options"></canvas>      
  </body>

还有javascript:

And the javascript: 

angular.module('myApp', ['chart.js'])

    .controller('myController', [function() {
        var ctrl = this;

        ctrl.socialChart = {
            options: {
                legend: {
                    display: true
                }
            },
            labels: ['2012'],
            series: ['FACEBOOK', 'GOOGLE', 'TWITTER', 'INSTAGRAM'],
            // colors: ['rgba(237, 64, 42, 1)', 'rgba(240, 171, 5, 1)', 'rgba(160, 180, 33, 1)', 'rgba(0, 163, 159, 1)'],
            colors: ['#ED402A', '#F0AB05', '#A0B421', '#00A39F'],
            data: [[1178], [652], [1004], [838]]
        }
    }]);

这是一个 Plunker 演示:Plunker

Here's a Plunker demonstrating it: Plunker

我发现了很多关于使用 rgba 表示法(由于某种原因，它给了我完全错误的颜色)和 fillColor(我根本无法使用)的信息.很难判断 chart.js 版本 1 或 2 的信息是什么.

I've found lots of information about using rgba notation (which for some reason gives me the wrong colors altogether) and fillColor (which I can't get working at all). It's hard to tell what info is for version 1 or 2 of chart.js.

任何帮助将不胜感激.

推荐答案

可以使用chart-dataset-override="datasetOverride"

HTML

 <div ng-controller="BarCtrl">
    <canvas id="bar" class="chart chart-bar" 
    chart-data="data" 
    chart-labels="labels" 
    chart-series="series" 
    chart-dataset-override="datasetOverride"></canvas>
  </div>

控制器

  ctrl.datasetOverride = [{
        fill: true,
        backgroundColor: [
          "#ED402A",
          "#36A2EB",
          "#FFCE56"
        ]
      }, {
        fill: true,
        backgroundColor: [
          "#F0AB05",
          "#36A2EB",
          "#FFCE56"
        ]
      }, {
        fill: true,
        backgroundColor: [
          "#A0B421",
          "#36A2EB",
          "#FFCE56"
        ]
      }, {
        fill: true,
        backgroundColor: [
          "#00A39F",
          "#36A2EB",
          "#FFCE56"
        ]
      },
    ];

演示

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