I tried to set/unset the option for plotting hided lines in charts.
The entry in the xlsx -> chart.xml is plotVisOnly
Is there a generic way to set properties in excel which are not natively suported in openpyxl? or is there a "real" method or attribute to manipulate the plotVisOnly option?
In the "excel-GUI" the option can be found in context menu of a chart -> select data.... -> Hided and empty cells -> show data in hided rows and cols