One Dimension Detail Coefficent Extraction
D=detcoef(c,l,[N])
detcoef is for extraction of detail coeffient at different level after a multiple level decompostion. Extension mode is stored as a global variable and could be changed with dwtmode. If N is omitted, maximum level approximation will be obtained.
x=rand(1,100); [C,L]=wavedec(x,3,'db2'); D2=detcoef(C,L,2); | ![]() | ![]() |
Roger Liu and Isaac Zhi