google.load('visualization', '1.0', {'packages':['corechart']});
google.setOnLoadCallback(function(){
  var data = new google.visualization.DataTable();
       data.addColumn('string', '月');
       data.addColumn('number', '2020年順位');
       data.addColumn('number', '2021年順位');
       data.addColumn({type:'string', role:'annotation'});
       data.addColumn('number', 'DL数(万)');
       data.addRows([
        ['1月',null,87,null,1481.8],
['2月',null,78,'78位(年間最高)',524.5],
['3月',null,104,null,446.3],
['4月',null,103,null,482.9],
['5月',null,84,null,423.7],
['6月',null,85,null,345.9],
['7月',null,97,null,301.4],
['8月',null,88,null,291.9],
['9月',null,93,null,331.8],
['10月',null,118,null,301.8],
['11月',485,119,null,340.6],
['12月',181,141,null,329.7]
        ]);
  var options = {
    chartArea: {'width':'85%', 'height':'65%', 'left':30 },
    'pointSize': 3,
    vAxes:[
      {direction:-1,format:'#',viewWindow:{min:0,max:400}},
      {direction:1,textPosition:'none'},
    ],
    series: {
      0:{
        type: 'line',
        color: '#2980b9',                
        targetAxisIndex: 0,
      },
      1:{
        type: 'line',
        color: '#e74c3c',                
        targetAxisIndex: 0,
      },
      2:{
        type: 'bars',
        color: 'skyblue',
        targetAxisIndex: 1,
        
      },
    },
    legend: {position: 'top' },
    tooltip: { trigger: 'both' },
    focusTarget: 'category',
    colors:['#e74c3c','#2980b9']
  };
          
  var chart = new google.visualization.ComboChart(document.getElementById('graphField'));
  chart.draw(data, options);

  var lastlogmonth=12 -1 ;

  console.log(lastlogmonth);
  if(lastlogmonth>=0){
    chart.setSelection([{
      row: lastlogmonth,
      column: 2
    }]);
  }

  google.visualization.events.addListener(chart, 'click', function() {
    if(chart.getSelection()[0]){
      chart.setSelection(null)
    }
  });


});