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// Copyright 2019 Hans Dembinski
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt
// or copy at http://www.boost.org/LICENSE_1_0.txt)
// clang-format off
//[ getting_started_listing_05
//////////////// Begin: put this in header file ////////////////////
#include <algorithm> // std::max_element
#include <boost/format.hpp> // only needed for printing
#include <boost/histogram.hpp> // make_histogram, integer, indexed
#include <iostream> // std::cout, std::endl
#include <sstream> // std::ostringstream
#include <tuple>
#include <vector>
// use this when axis configuration is fix to get highest performance
struct HolderOfStaticHistogram {
// put axis types here
using axes_t = std::tuple<
boost::histogram::axis::regular<>,
boost::histogram::axis::integer<>
>;
using hist_t = boost::histogram::histogram<axes_t>;
hist_t hist_;
};
// use this when axis configuration should be flexible
struct HolderOfDynamicHistogram {
// put all axis types here that you are going to use
using axis_t = boost::histogram::axis::variant<
boost::histogram::axis::regular<>,
boost::histogram::axis::variable<>,
boost::histogram::axis::integer<>
>;
using axes_t = std::vector<axis_t>;
using hist_t = boost::histogram::histogram<axes_t>;
hist_t hist_;
};
//////////////// End: put this in header file ////////////////////
int main() {
using namespace boost::histogram;
HolderOfStaticHistogram hs;
hs.hist_ = make_histogram(axis::regular<>(5, 0, 1), axis::integer<>(0, 3));
// now assign a different histogram
hs.hist_ = make_histogram(axis::regular<>(3, 1, 2), axis::integer<>(4, 6));
// hs.hist_ = make_histogram(axis::regular<>(5, 0, 1)); does not work;
// the static histogram cannot change the number or order of axis types
HolderOfDynamicHistogram hd;
hd.hist_ = make_histogram(axis::regular<>(5, 0, 1), axis::integer<>(0, 3));
// now assign a different histogram
hd.hist_ = make_histogram(axis::regular<>(3, -1, 2));
// and assign another
hd.hist_ = make_histogram(axis::integer<>(0, 5), axis::integer<>(3, 5));
}
//]
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