Matlab小技巧

%剔除数组中，超过限制的元素
s = [1,2,3]
s(s>2)=5
s(s<2)=-5
>>>s=[-5 2 5]

 

   %将两个数字首尾相连，合并成一个数字，1 2 3 -> 123
 a1 = [11 2 3]';
a2 = [4 5 6]';
% Convert both the numbers to strings
b1 = num2str(a1);
b2 = num2str(a2);
% Concatenate the two strings element wise
c1 = strcat(b1, b2);
% Convert the result back to a numeric matrix
result = str2num(c1)

 

%求两个点之间的Euclidean distance
dist([2,2;1,1],[0,0]'); %注意将后面所求的点，转置