Как установить xScalePaddingLeft в angular-chart.js

Question

Я работаю над созданием простой линейной диаграммы, используя angular-chart.js (версия 1.1.1), и я хотел бы установить xScalePaddingLeft picture или получить значение xScalePaddingLeft.Я мог найти, как это сделать, только в chart.js.

Как мне это сделать в angular-chart.js?Есть предложения?

<div ng-controller="LineCtrl as ctrl">
  <canvas id="line" 
      class="chart chart-line" 
      chart-data="ctrl.data"
      chart-labels="ctrl.labels" 
      chart-options="ctrl.options"
      chart-colors = "ctrl.colors"
      chart-series="ctrl.series" 
      chart-click="onClick">
  </canvas>
</div>  

js

var app = angular.module("app", ["chart.js"]);

app.config(['ChartJsProvider', function(ChartJsProvider) {
ChartJsProvider.setOptions({
                        chartColors: ["#F7464A", "#46BFBD"],
                        responsive: true,
                        mantainAspectRatio: false
    });
ChartJsProvider.setOptions('line', {
    showLines: true
});
}]);

app.controller("LineCtrl", function ($scope) {
  var $ctrl = this;

   $ctrl.labels = [];
  $ctrl.data = [[], [], null];
  $ctrl.series = [];
  $ctrl.colors = [];
  $ctrl.options = {};

  var arrLabels = new Array();
  var arrLine1 = new Array();
  var arrLine2 = new Array();
  var arrToday = new Array();
  var today;
  today = "06.11.2018";
  arrLabels =         ["29.10.2018","30.10.2018","31.10.2018","01.11.2018","02.11.2018",           "03.11.2018","04.11.2018","05.11.2018","06.11.2018","07.11.2018",           "08.11.2018","09.11.2018","10.11.2018","11.11.2018"];
 arrLine1 =     [80.0,72.0,64.0,56.0,48.0,40.0,40.0,40.0,32.0,24.0,16.0,8.0,0.0,0.0];
  arrLine2 = [7.0,7.0,7.0,7.0,7.0,7.0,7.0,7.0,7.0,7.0,7.0,7.0,7.0,7.0]; 
  $ctrl.labels = arrLabels;
  $ctrl.data = [arrLine1, arrLine2, arrToday];
  $ctrl.series = ['Line1', 'Line2', 'Today'];
  $ctrl.colors = ["#F0000", "#0000FF", "#FF0000"];

  $ctrl.options =  {
    legend: { display: true },
    annotation: {
      annotations: [{
        type: 'line',
        mode: 'vertical',
        scaleID: 'x-axis-0',
        value: today,
        borderColor: "#FF0000",
        borderWidth: 2
      }]
    },
    elements:{
      line: {
        fill:false,
        tension: false
      }
    }
  };
});

plunker