2016-04-22 208 views

回答

2

有一個辦法,但超過破解,一個官方的解決方案,here是一個例子:

data.addColumn({type:'boolean',role:'certainty'}); // certainty col. 

     data.addRows([ 
     [1, 41.8, true], 
     [2, 32.4, true],//duplicate this 
     [2, 32.4, false], 
     [3, 25.7, true], 
     [4, 10.5, true], 
     [5, 10.4, true], 
     [6, 7.7, true], 
     [7, 9.6, true], 
     [8, 10.6, true], 
     [9, 14.8, true], 
     [10, 11.6, true], 
     [11, 4.7, true], 
     [12, 5.2, true], 
     [13, 3.6, true], 
     [14, 3.4, true] 
     ]); 

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