boost::histogram::algorithm::shrink_and_rebin — Shrink and rebin option.
// In header: <boost/histogram/algorithm/reduce.hpp> auto shrink_and_rebin(unsigned iaxis, double lower, double upper, unsigned merge);
Parameters:
iaxis
which axis to operate on.
lower
lowest bound that should be kept.
merge
how many adjacent bins to merge into one.
upper
highest bound that should be kept. If upper is inside bin interval, the whole interval is removed.