Highcharts - best way to handle and display zero (or negative) values in a line chart series with logarithmic Y axis

Question

In my HighChart line graphs, the series data is being fed from my Ruby on Rails application dynamically. Sometimes the series values are zeros or less which is a problem fo

Answer 1

Have you tried using a label formatter?

var chart = new Highcharts.Chart({ 
    yAxis: {        
        labels: {
            formatter: function() {
                if(this.value === 0.00001){
                    return 0;
                } else {
                    return this.value;
                }
            }
        }
    }
});

Answer 2

When dealing with huge numbers, it's better to use the standard label formatter for values other than 0, otherwise your labels gonna be displayed like this: 1000000000... To change this replace 'else' statement to the call to the original label formatter method below:

var chart = new Highcharts.Chart({ 
    yAxis: {        
        labels: {
            formatter: function() {
                if(this.value === 0.00001){
                    return 0;
                } else {
                    return Highcharts.Axis.prototype.defaultLabelFormatter.call(this);
                }
            }
        }
    }
});