www.pudn.com > mulscal_edge.rar > sub_m.m

%以row，col为点子矩阵的左上角的点，求矩阵C的大小为n*n的子矩阵 
 
function  [out]= sub_m(c,row,col,n) 
s_c(n , n)=0; 
iirow=1; 
jjcol=1; 
for irow=row:(row+n-1) 
   for jcol=col:(col+n-1) 
        s_c(iirow,jjcol)=c(irow,jcol);  
        jjcol=jjcol+1;       
   end 
   jjcol=1; 
   iirow=iirow+1; 
end 
out=s_c;