histogram/examples/guide_histogram_streaming.cpp
Hans Dembinski 016532f011
Histogram fill method (#54)
huge refactor, various speed improvements, potential for further improvements and parallelization
2019-08-19 23:55:43 +02:00

48 lines
1.1 KiB
C++

// 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_histogram_streaming
#include <boost/histogram.hpp>
#include <boost/histogram/ostream.hpp>
#include <cassert>
#include <iostream>
#include <sstream>
#include <string>
int main() {
using namespace boost::histogram;
namespace tr = axis::transform;
auto h = make_histogram(axis::regular<>(2, -1.0, 1.0, "axis 1"),
axis::category<std::string>({"red", "blue"}, "axis 2"));
std::ostringstream os;
os << h;
std::cout << os.str() << std::endl;
assert(os.str() ==
"histogram(\n"
" regular(2, -1, 1, metadata=\"axis 1\", options=underflow | overflow),\n"
" category(\"red\", \"blue\", metadata=\"axis 2\", options=overflow),\n"
" 0: 0\n"
" 1: 0\n"
" 2: 0\n"
" 3: 0\n"
" 4: 0\n"
" 5: 0\n"
" 6: 0\n"
" 7: 0\n"
" 8: 0\n"
" 9: 0\n"
" 10: 0\n"
" 11: 0\n"
")");
}
//]