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52 lines
1.8 KiB
C++
52 lines
1.8 KiB
C++
// Copyright 2015-2018 Hans Dembinski
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt
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// or copy at http://www.boost.org/LICENSE_1_0.txt)
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//[ guide_histogram_streaming
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#include <boost/histogram.hpp>
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#include <boost/histogram/ostream.hpp>
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#include <cassert>
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#include <iostream>
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#include <sstream>
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#include <string>
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int main() {
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using namespace boost::histogram;
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namespace tr = axis::transform;
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auto h = make_histogram(
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axis::regular<>(2, -1.0, 1.0),
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axis::regular<double, tr::log>(2, 1.0, 10.0, "axis 1"),
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axis::regular<double, tr::pow, use_default, axis::option::growth>(
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tr::pow{1.5}, 2, 1.0, 10.0, "axis 2"),
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// axis without metadata
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axis::circular<double, axis::null_type>(4, 0.0, 360.0),
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// axis without under-/overflow bins
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axis::variable<double, use_default, axis::option::none>({-1.0, 0.0, 1.0}, "axis 4"),
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axis::category<>({2, 1, 3}, "axis 5"),
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axis::category<std::string>({"red", "blue"}, "axis 6"),
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axis::integer<>(-1, 1, "axis 7"));
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std::ostringstream os;
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os << h;
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std::cout << os.str() << std::endl;
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assert(os.str() ==
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"histogram(\n"
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" regular(2, -1, 1, options=underflow | overflow),\n"
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" regular_log(2, 1, 10, metadata=\"axis 1\", options=underflow | overflow),\n"
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" regular_pow(2, 1, 10, metadata=\"axis 2\", options=growth, power=1.5),\n"
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" regular(4, 0, 360, options=overflow | circular),\n"
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" variable(-1, 0, 1, metadata=\"axis 4\", options=none),\n"
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" category(2, 1, 3, metadata=\"axis 5\", options=overflow),\n"
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" category(\"red\", \"blue\", metadata=\"axis 6\", options=overflow),\n"
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" integer(-1, 1, metadata=\"axis 7\", options=underflow | overflow)\n"
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")");
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}
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//]
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