Adding a condition to a built-in function

I an using the dpss built-in function and want to know if I can add a condition to it such that the sum of the dpss sequence in each row is equal to a specific number? Below is my code:

seq_length = length(pcp);%%pcp has a length of 24 

time_halfbandwidth = 6.5;

num_seq = 2*(time_halfbandwidth)-1;

[dps_seq, lambda] = dpss(seq_length,time_halfbandwidth,num_seq);

for i=1:seq_length

      sum(dps_seq,2)=pcp(i);

end

[Krishna Bindumadhavan]

Hi Abena. If I understand the question correctly, you want to modify an inbuilt function.

You can actually view the MATLAB source for the dpss function by typing

>> edit dpss

You can then edit the function, and then save that as a new function, for example dpss_edit.m.

You may then use this new function, dpss_edit in subsequent function calls.

[Abena Amponsah]

Thanks Krishna