Restruction from single branch from multiple level decompstion
X=wrcoef(type,c,l,wname,[N]) X=wrcoef(type,c,l,Lo_R,Hi_R,[N])
wrcoef is for reconstruciton from single branch of multiple level decompostion. Extension mode is stored as a global variable and could be changed with dwtmode. If N is omitted, maximum level is used.
x=rand(1,100); [C,L]=wavedec(x,3,'db2'); x0=wrcoef('a',C,L,'db2',2);
Roger Liu and Isaac Zhi