c++ - C++ Armadillo:- Equivalent to Matlab's bsxfun

Question

Does Aramadillo have a general purpose equivalent to matlab's bsxfun, which performs element wise operations e.g bsxfun(@minus,A,B)? I have seen that Armadillo does have element wise multiplication and division, but no indication that a generalized function is available.

Answer 1

虽然不完全是 bsxfun()，但Armadillo 3.4+ 中添加了两个与您的问题相关的新函数：.each_col()和 .each_row()。它们允许在矩阵的每一列/行上重复给定的向量操作。这包括加法、逐元素乘法等。