Highcharts - adding a question mark where data is missing in a bar chart -


i want add question mark highcharts bar chart data in data set null, because value 0 shown in same way when data null. possible?

edit mean column chart

i found solution. need set point 0 formatter know draw image:

var series = [8, 7, 8, null, 9]   $(function () {      $('#container').highcharts({         title: {             text: 'example null values'         },         series: [{             name: "values",             data: series,             type: "column",             zindex: 0,             color: "#55f26a"         }],         plotoptions: {             column: {                 datalabels: {                     enabled: true,                     usehtml: true,                     formatter: function() {                         if(this.y == null) {                             this.point.update(0);                             return "<img src='http://placehold.it/20'/>";                          }                         else return null;                     }                 }             }         },     }); });

try @ http://jsfiddle.net/x8scf/4/


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