Chart macro type=gantt properties / customisation

Question

I'm trying to determin how chart properties are mapped to columns in the chart macro for type=gantt.

The only mention I can find in the documentation (https://confluence.atlassian.com/doc/chart-macro-163415075.html#ChartMacro-Ganttchart) provides the example "Columns:  ,,1,2,3,4 (note the two commas to start)". From what I can gather the first property (blank in the example) relates to the legend label whereas the 3rd, 4th, 5th and 6th represent label, start, end, and % complete, respectively.

I can't work out what the second column parameter is for. Can anyone tell me how these are used. I'm hoping to have a little more control over the way the gantt is displayed.

Brant Schroeder · Answer

@Nic Thiele it is in the link you provided You must include the two leading commas in the column parameter (for example ,,1,2,3,4) for the chart to be created correctly.

Nic Thiele · Answer

Thanks @Brant Schroeder, I hadn't found where it mentions they must be blank, do you have a link to this? Weird that they wouldn't just start at parameter 3, maybe it's some sort of standardisation with other chart types but I've noticed an impact on the bar size when I try different values.

I haven't logged a support ticket, figured I was just missing something.

Brant Schroeder · Answer

@Nic Thiele You guess is as good as anyone's but per the documentation they must be blank in order for it to render correctly.  This means that you are not going to be able to put anything in there to get the gantt to display differently.   Have you tried submitting a support issue to see what Atlassian says about it?