I need to rename '-' in graph.
I understand, how to rename empty field (5.9%), but this doesn't work with '-'.
Also it would be perfect to unite empty fields and '-' (nulls) and rename it.
Thanks in advance!
You can use the powerfull function alt like this:
alt([your field or expression], 'Null Values') this will give null values the label 'Nulls Values'.
Hope it helps you