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// Copyright 2015-2018 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)
//[ guide_custom_modified_axis
#include <boost/histogram.hpp>
#include <cassert>
#include <iostream>
#include <sstream>
int main() {
using namespace boost::histogram;
// custom axis, which adapts builtin integer axis
struct custom_axis : public axis::integer<> {
using value_type = const char*; // type that is fed to the axis
using integer::integer; // inherit ctors of base
// the customization point
// - accept const char* and convert to int
// - then call index method of base class
axis::index_type index(value_type s) const { return integer::index(std::atoi(s)); }
};
auto h = make_histogram(custom_axis(3, 6));
h("-10");
h("3");
h("4");
h("9");
std::ostringstream os;
for (auto&& b : indexed(h)) {
os << "bin " << b.index() << " [" << b.bin() << "] " << *b << "\n";
}
std::cout << os.str() << std::endl;
assert(os.str() == "bin 0 [3] 1\n"
"bin 1 [4] 1\n"
"bin 2 [5] 0\n");
}
//]
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