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[英]How to install Chart.js and angular-chart.js (Error: Chart.js library needs to be included)
[英]How can I create a horizontal scroll effect with angular-chart.js and chart.js
我正在使用angular-chart.js
(v1.1.1),一个围绕chart.js
的角度包装器(我相信angular-chart.js
使用chart.js
v2.x),并且在创建水平滚动效果时遇到了麻烦条形图中的条形数量开始变大。
我将其视为其他地方的解决方案: http : //jsfiddle.net/mbhavfwm/
但:
angular-chart.js
来访问底层图表元素 onAnimationComplete
在angular-chart.js
。 这是我当前的解决方案:我有3个div,最后使用以下配置将canvas
渲染到第3个div中:
this.chartOptions = this.composeChartService.createChartOptions({
title: ctrl.chartTitle,
legend: {
position: 'bottom'
},
responsive: true,
maintainAspectRatio: true
});
这是玉:
mixin dynamic-chart(type)
canvas(
class=`chart chart-${ type }`
title="$ctrl.chartId"
chart-data="$ctrl.events"
chart-series="$ctrl.cities"
chart-labels="$ctrl.labels"
chart-click="$ctrl.onClickBar"
chart-options="$ctrl.chartOptions")
div.chart-wrapper(ng-switch="$ctrl.chartType")
//- Bar chart
div.chart-area-wrapper(ng-when="bar")
div.chart-test
+dynamic-chart('bar')
这是影响这些div的手写笔:
.chart-wrapper
width: 800px
overflow: auto
canvas
background-color: white
width: 100%
.chart-test
width: 1200px !important
background-color: yellow
水平滚动类型适用于此解决方案,但是条形图的厚度太小,我不喜欢在.chart-test
该宽度时随意选择.chart-test
div的宽度。 而且,有时标题和图例会被此解决方案隐藏(取决于滚动的时间)。
因此,是否有更好的方法可以使angular.chart.js
与水平滚动angular.chart.js
播放?
有一些API更改可与更高版本的chart.js
。
因此,例如, xScalePaddingLeft
类的属性不再可用,并且
onAnimationComplete : function(){}
就是现在
animation: { onComplete : function(){} }
没有更好的方法(IMO),因为您确实需要具有独立的浮动Y轴,而chart.js并没有提供该选项。
我重写了上面的示例,以使用最新版本的angular-charts.js
和chart.js
:
var app = angular.module("app", ["chart.js"]); app.controller("LineCtrl", function($scope) { $scope.labels = ["January", "February", "March", "April", "May", "June", "July"]; $scope.series = ['Series A', 'Series B']; $scope.data = [ [65, 59, 80, 81, 56, 55, 40], [28, 48, 40, 19, 86, 27, 90] ]; $scope.onClick = function(points, evt) { console.log(points, evt); }; $scope.datasetOverride = [{ yAxisID: 'y-axis-1' }]; $scope.options = { scales: { yAxes: [{ id: 'y-axis-1', type: 'linear', display: true, position: 'left' }] }, responsive: false, animation: { onComplete: function() { var sourceCanvas = this.chart.ctx.canvas; var copyWidth = this.chart.controller.chartArea.left - 5; // the +5 is so that the bottommost y axis label is not clipped off // we could factor this in using measureText if we wanted to be generic var copyHeight = this.chart.controller.chartArea.bottom + 5; // 282 //this.scale.endPoint + 5; var targetCtx = document.getElementById("myChartAxis").getContext("2d"); targetCtx.canvas.width = copyWidth; targetCtx.drawImage(sourceCanvas, 0, 0, copyWidth, copyHeight, 0, 0, copyWidth, copyHeight); } } }; });
.chartWrapper { position: relative; } .chartWrapper>canvas { position: absolute; left: 0; top: 0; pointer-events: none; } .chartAreaWrapper { width: 600px; overflow-x: scroll; }
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.5.0/Chart.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.8/angular.js"></script> <script src="https://cdn.jsdelivr.net/angular.chartjs/latest/angular-chart.min.js"></script> <div ng-app="app" ng-controller="LineCtrl"> <div class="chartWrapper"> <div class="chartAreaWrapper"> <canvas id="line" class="chart chart-line" chart-data="data" chart-labels="labels" chart-series="series" chart-options="options" chart-dataset-override="datasetOverride" chart-click="onClick" width="1200" height="300"></canvas> </div> <canvas id="myChartAxis" height="300" width="0"></canvas> </div> </div>
这在jsfiddle中是相同的: https ://jsfiddle.net/vfzyvg6z/1/
使用非滚动标题和图例更新 : https : //jsfiddle.net/vfzyvg6z/2/
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