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',69,70,null,7.6],
['2月',50,64,null,5.1],
['3月',50,56,null,4.6],
['4月',49,59,null,5.4],
['5月',50,63,null,5.4],
['6月',60,60,null,4.7],
['7月',73,68,null,6],
['8月',80,64,null,4.7],
['9月',76,57,null,5.7],
['10月',64,55,'55位(年間最高)',5.4],
['11月',59,57,null,5.8],
['12月',62,63,null,5]
        ]);
  var options = {
    chartArea: {'width':'85%', 'height':'65%', 'left':30 },
    'pointSize': 3,
    vAxes:[
      {direction:-1,format:'#',viewWindow:{min:0,max:100}},
      {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)
    }
  });


});