Is there a way of having stacked bar charts, which would have different numbers of bars (rectangles in the y axis) for different stacks?
Here is an example of data
file-sizes-per-directory = {
'dirA': [10, 20, 30, 40, 50],
'dirB': [10, 15],
'dirC': [5, 10, 10, 5, 73, 89]
}