'RLE2' find the zeros in a vector, and then substitude them by a flag. USE: [v_no_zeros,num_ceros]=rle2(vector_with_zeros);
0001 0002 %'RLE2' find the zeros in a vector, and then substitude them by 0003 % a flag. 0004 % 0005 % USE: [v_no_zeros,num_ceros]=rle2(vector_with_zeros); 0006 % 0007 0008 function [aa,longit]=rle2(b) 0009 0010 [x,y]=size(b); 0011 0012 if x>y 0013 b=b'; 0014 end 0015 0016 aaa=(b==0); 0017 0018 c=[aaa 0]-[0 aaa]; 0019 ini=find(c==1); 0020 fin=find(c==-1); 0021 longit=fin-ini; 0022 nn=length(ini); 0023 aa=[]; 0024 g=[1 fin]; 0025 for i=1:nn, 0026 aa=[aa b(g(i):ini(i)-1) 0]; 0027 [nn i]; 0028 end 0029 if nn>0 0030 aa=[aa b(fin(length(fin)):length(b))]; 0031 else 0032 aa=b; 0033 longit=0; 0034 end 0035