[Design] The distance between individual columns is set to 1/2 of the width of the column itself.

[Wdingding]

By default, the distance between individual columns is set to 1/2 of the width of the column itself.

[quillblue]

@Wdingding I'm trying to help on this, do you have any guidance on bar gap for multiple bar series on same coord grid?

[pissang]

@quillblue Ahhhhh, just noticed your comment after I committed this improvement

[quillblue]

@pissang never mind. I can learn from your code and work on others:)