MATLAB: Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.

error zeros indices

I get the error 'Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.' when I run this function.
The error occurs on line 41. SigS(j,h,:) = sg1+noise(101:end)+zeros(N);
function [SigS,Sig,F_out,noise] = sig_gen(object,inputs)
t = inputs.t;
f1 = inputs.f1;
f2 = inputs.f2;
a = inputs.a;
a2 = inputs.a2;
Ta = inputs.Ta;
f_sub = inputs.f_sub;
f_trans = inputs.f_trans;
An = inputs.An;
phi = inputs.phi;
A = inputs.A;
N = length(t);
dt = t(2)-t(1);
for j=1:size(object,1)
    for h=1:size(object,2)
        f = zeros(1,N);
        f(1:object(j,h)) = f1;
        f(1+object(j,h):end)=f2;
        sg1 = 0.25*A.*cos((2*pi*f.*t) + phi).*exp(-a*t);        % signal formula
        trans = A.*sin((2*pi*f_trans.*t) + phi).*exp(-a2*t);    % transducer signal
        thermal  = 10.*exp(-Ta*t);                              % thermal signal
        sub = 0.25*A.*cos((2*pi*f_sub.*t) + phi).*exp(-a*t);    % substrate signal
        sg = sg1 + trans + thermal + sub;
        sg2 = [zeros(1,100) sg];                                % zeros signal
        noise = An.*randn(size(sg2));                           % noise signal
        sg3 = sg2 + noise;                                      % final signal
        t2 = ((0:length(sg3)-1)-100)*dt;
        
        % Signal Plotting
       
        Sig(j,h,:)=sg3;                                         
        SigS(j,h,:) = sg1+noise(101:end)+zeros(N);
        F_out(j,h,:)=f;
    end
end
end

Best Answer

We need to know what type of variables the inputs are, give us an example please
By the way, zeros(N) is an NxN matrix and you need in this line a column array; Probably it is the error
SigS(j,h,:) = sg1+noise(101:end)+zeros(1,N);
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