[zzz911]

%23行
o=uint8(ones(1,size(v,2)));
%24行
m=uint8(mean(v,2));
%25行
mo=single(m)*single(o);

提示错误：
??? Error using ==> *
Function '*' is not defined for values of class 'single'.

Error in ==> E:\mat_work\face_recognition20081203\face_recognition.m
On line 25 ==> mo=single(m)*single(o);

请求解决方法。谢谢。