C++ Eigen 数学库中矢量幅度的成员函数
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Member function in Eigen math library for vector magnitude
提问by Alex
I have been trying to find a method that computes the magnitude of a vector in Eigen and I was not able to. Can somebody provide me with the function name of just if it doesn't exist?
我一直试图找到一种方法来计算 Eigen 中向量的大小，但我无法做到。有人可以为我提供函数名称，如果它不存在吗？
I can create a global method that does the job but I prefer not to.
我可以创建一个全局方法来完成这项工作，但我不想这样做。
回答by timday
You want .norm(). Note that there's also .squaredNorm(), .normalized()and .normalize().
你想要.norm()。请注意，还有.squaredNorm()、.normalized()和.normalize()。
回答by Benoit Jacob
The method you're looking for is .norm().
您正在寻找的方法是.norm()。
