velmax = 0.5;
velmin = -0.5;
popmax = 30;
popmin = -30;
size = 2;

for i = 1:size
    pop(i,:) = popmin + (popmax - popmin)* rand(1,dim);
    vel(i,:) = velmin + (velmax - valmin)* rand(1,dim);
end

显示循环无法执行赋值，因为左侧的索引与右侧的大小不兼容。如何解决，求助大神们