I had implemented the HighCharts in the framework in my company, and I can say that we are super satisfied with it. But we have a problem, we don't know how to solve.
In column graphs, when a column has its value equal to zero, it is no visual information about it, the column is just omitted. I want it displayed in a tooltip when the user mouses over the space of the column where the value is equal to 0.
Watch the fiddle below where it generates a bar chart with several columns with value 0, or worthless.
The method where the chart runs:
GraficoBarra(arrayPropriedades, arrayDados, arrayDrillDown);
As @wergeld said, you need to pass 0-based values to options, otherwise you won't get displayed nothing at all. For nulls it's no possible, since this doesn't have value.
Now,you need to set minPointLength
, to some value (like 10), then even 0-values will be displayed as small bars. See demo: http://jsfiddle.net/EJK4e/12/
Just to be on the same page - to display tooltip, you need point graphic, otherwise there will be no hover event for triggering tooltip to show up.