Error in MATLAB function

Hi! I am using following code as a function but there is some error occured

function [varargout]=deap(s)
%******************************
[C,L]=wavedec(s,4,'db4');%Scale 128
C4=appcoef(C,L,'db4',4);
D4=detcoef(C,L,4); %Scale 64
D3=detcoef(C,L,3);%Scale32
D2=detcoef(C,L,2);%Scale 16
D1=detcoef(C,L,1);%Scale 8
[C,L]=wavedec(s,4,'db4');
SRC4=wrcoef('a',C,L,'db4',4);
SRD4=wrcoef('d',C,L,'db4',4);
SRD3=wrcoef('d',C,L,'db4',3);
SRD2=wrcoef('d',C,L,'db4',2);
SRD1=wrcoef('d',C,L,'db4',1);
alpha=(SRD4);%?-wave(8~13Hz)
beta=(SRD3);%?-wave(14~30Hz)
varargout={alpha,beta,SRD1,SRD2,SRD3,SRC4,D1,D2,D3,D4,C4,C,L};
the error is *"Error in deap (line 3)
[C,L]=wavedec(s,4,'db4');%Scale 128

Output argument "y" (and maybe others) not assigned during call to "C:\Users\SID\Desktop\deap.m>deap"* Please help me any one . Thanks in advance.

Answer 1

[Kaustubha Govind]

Your MATLAB Function block's Ports and Data Manager probably configures "y" as an output, which is never assigned in your function. Note that you cannot have a variable number of outputs for the MATLAB Function block, so you may instead what to replace varargout with (alpha,beta,SRD1,SRD2,SRD3,SRC4,D1,D2,D3,D4,C4,C,L) in your function prototype.

[Siddhartha Singh]

Thank you for giving your comment . After running this code then i went to command line and then just type y=deap(s); then got this error . Please clear me little bit more

[Kaustubha Govind]

What about if you try Walter's solution?

Answer 2

[Walter Roberson]

T = {alpha,beta,SRD1,SRD2,SRD3,SRC4,D1,D2,D3,D4,C4,C,L};
for K = 1 : nargout
  varargout{K} = T{K};
end