I'm plotting disk partitioning and available space.
I have a pie chart showing the partitioning: e.g. 30%
In the second ring I want to show that 90%
/ is full, 10% of
/ is empty. 10%
/home is full, 90%
/home is empty.
How can I generate the 'second' series of the wedges?
Please give example in LibreOffice, gnuplot, matplotlib, etc.
Something like this: