Question

matlab A=I((X(k)-1):(X(k)+1),(Y(k)-1):(Y(k)+1));

Answer 1

语句的功能是对I矩阵进行截取,X(k)-1):(X(k)+1)这三行,和(Y(k)-1):(Y(k)+1)这三列,生成3X3矩阵