What could be the problem here... (ZeroDivisionError: float division by zero)

[Arunvist]

Can you please help us, what could be the problem in generated bootchart data? attached data as well...

k@IND81LW7Q2-W:/tmp/android-bootchart$ pybootchartgui bootchart.tar
parsing 'bootchart.tar'
parsing 'header'
parsing 'proc_stat.log'
parsing 'proc_ps.log'
parsing 'proc_diskstats.log'
merged 0 logger processes
pruned 146 process, 0 exploders, 1 threads, and 1 runs
False
Traceback (most recent call last):
File "/usr/bin/pybootchartgui", line 23, in
sys.exit(main())
File "/usr/lib/python2.7/dist-packages/pybootchartgui/main.py", line 137, in main
render()
File "/usr/lib/python2.7/dist-packages/pybootchartgui/main.py", line 128, in render
batch.render(writer, res, options, filename)
File "/usr/lib/python2.7/dist-packages/pybootchartgui/batch.py", line 41, in render
draw.render(ctx, options, *res)
File "/usr/lib/python2.7/dist-packages/pybootchartgui/draw.py", line 282, in render
draw_chart(ctx, IO_COLOR, True, chart_rect, [(sample.time, sample.util) for sample in disk_stats], proc_tree)
File "/usr/lib/python2.7/dist-packages/pybootchartgui/draw.py", line 201, in draw_chart
yscale = float(chart_bounds[3]) / max(y for (x,y) in data)
ZeroDivisionError: float division by zero

bootchart.zip

[antoine-girard-vallee]

This might be a bit late, and I'm just a user of this application, but I think the issue lies in the pruning algorithm.
I can make your bootchart.tar work just fine with the following:

python3 ./pybootchartgui.py --show-all -n -f svg bootchart.tar

I could most probably fix this, but I think the owner of this repo disappeared.