Hi,

thank you for your interest.

you should look into the implementation of boost::histogram::axis::regular to get an idea how this axis would work, also have a look at the Axis concept in the documentation.

I gave this axis more thought in the meantime and it should be even more generalized: piecewise is a new axis which pieces several other axis types together.

template <class... Ts>
class piecewise { ... };

The Ts... are other axis types.

It is created by a make_piecewise factory function.

template <class... Ts>
piecewise<Ts...> make_piecewise(Ts... ts) {
    ...
}

Upon construction, piecewise checks that the boundaries of its axis arguments are connected, meaning that the uppermost bin edge of the first axis is equal to the lowermost bin edge of the second axis, etc. It keeps a std::tuple of the axis types. When a value is passed to the index method, it looks the sub-axis up whose range covers the argument value and passes the value to index method of that sub-axis. The index returned is shifted by the number of bins left of that sub-axis.

New axis: piecewise_regular #47

Description

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions