计算Boost库中的平均值和力矩

我正在尝试使用Boost库的

累加器

实现一个计算平均值和力矩的程序。代码如下：

#include <iostream>

#include <boost/accumulators/accumulators.hpp>
#include <boost/accumulators/statistics/mean.hpp>
#include <boost/accumulators/statistics/moment.hpp>
using namespace  boost::accumulators;

int main()
{
    accumulator_set<double,stats<tag::mean,tag::moment<2> > >acc;
    //push  in some data
    acc(1.2);
    acc(2.3);
    acc(3.4);
    acc(4.5);
    std::cout<<"Mean  :  "<<mean(acc)<<std::endl;
    std::cout<<"moment : "<<accumulators::moment<2>(acc)<<std::endl;

    return 0;
}

你可能需要

#include <boost/accumulators/statistics/stats.hpp>

#包括

但是，在Mac OS X上构建相同的示例时，会出现以下错误：

**** Build of configuration Debug for project Accumulators ****

make all 
Building file: ../src/Accumulators.cpp
Invoking: GCC C++ Compiler
g++ -I/opt/local/include -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"src/Accumulators.d" -MT"src/Accumulators.d" -o"src/Accumulators.o" "../src/Accumulators.cpp"
../src/Accumulators.cpp: In function 'int main()':
../src/Accumulators.cpp:22: error: 'accumulators' has not been declared
../src/Accumulators.cpp:22: error: no match for 'operator<<' in 'acc << std::endl'
make: *** [src/Accumulators.o] Error 1

****项目累加器配置调试的生成****
全部
生成文件：../src/acculators.cpp
调用：GCC C++编译器
g++-I/opt/local/include-O0-g3-Wall-c-fmessage length=0-MMD-MP-MF“src/acculators.d”-MT“src/acculators.d”-o“src/acculators.o”“../src/acculators.cpp”
../src/acculators.cpp:在函数“int main（）”中：
../src/acculators.cpp:22:错误：“acculators”尚未声明
../src/acculators.cpp:22:错误：与“operator不匹配除了已包含的标题外，还必须添加：

#include <boost/accumulators/statistics/moment.hpp>

然后使用以下命令进行编译：

g++ acc.cpp -o acc -I/usr/local/include/boost/ -L/usr/local/lib/

力矩。hpp
包含在OP中。
#include <boost/accumulators/statistics/moment.hpp>

using namespace boost;

g++ acc.cpp -o acc -I/usr/local/include/boost/ -L/usr/local/lib/