Optional function for yAxis to determine the column height based on its value
Though there is plotOptions.column.minPointLength property, it doesn't solve the problem completely.
Imagine there are columns which may have 0, 1, ... 1000 as values. These large values cause small values like 1 look like 0, i.e. no column is drawn.
By setting the plotOptions.column.minPointLength property to 3, causes the 0-value columns to be displayed as well.
All I want is to display the non-zero values to indicate to a user that there are some very small values.
Ideally, the minPointLength would not apply to 0 values. What you can do for now, however, is set your 0 value data points to null instead.