c++ - Advantages of a bit matrix over a bitmap -

i want create simple representation of environment represents if @ position object or not.

i need big matrix filled 1's , 0'. important work on matrix, since going have random positioned , set operations on it, iterate on whole matrix.

what best solution this? approach create vector of vectors containing bit elements. otherwise, there advantage of using bitmap?

note while std::vector<bool> may consume less memory slower std::vector<char> (depending on use case), because of bitwise operations. optimization questions, there 1 answer: try different solutions , profile properly.