How to resolve"Unable to perform assignment because the left and right sides have a different number of elements."?

Question

Basmah Ahmad 2024-2-10

0
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https://ww2.mathworks.cn/matlabcentral/answers/2080676-how-to-resolve-unable-to-perform-assignment-because-the-left-and-right-sides-have-a-different-number

移动：Walter Roberson 2024-2-10

采纳的回答： Walter Roberson

在 MATLAB Online 中打开

Why i am getting this error?

Unable to perform assignment because the left and right sides have a different number of elements.

Error in goldkasamiikron (line 29)

y(idx) = exp(1i * arg) .* newCode(1:length(idx));

function y = goldkasamiikron(fs, prf, pw, bw, fcent)
    % Compute pulse repetition interval (PRI)
    pri = 1 / prf;
    % Create time vector for one PRI
    t = 0:1/fs:pri;
code1 = comm.GoldSequence('FirstPolynomial','x^6+x^5+1', 'FirstInitialConditions',[ 0 0 0 0 0 1], 'SecondPolynomial','x^6+x^5+x^4+x+1', 'SecondInitialConditions',[0 0 0 0 0 1], 'Index',1, 'SamplesPerFrame',63);
gold_code = code1();
gold_code = 2.*gold_code - 1;
% Generate second kasami code
kasamiseq = comm.KasamiSequence('Polynomial',[6 5 4 1 0], ...
    'InitialConditions',[ 0 0 0 0 0 1],'SamplesPerFrame', 63);
kasami_code = kasamiseq();
kasami_code = 2.*kasami_code - 1;
% Construct new code
newCode = kron(gold_code, kasami_code); % Construct new code using Kronecker product
    % Frequency limits
    fl = fcent - bw/2;
    fh = fcent + bw/2;
    % Create pulsed waveform
    y = zeros(size(t));
    idx = find(t <= pw);
    arg = 2 * pi * fl * fh / bw * pw * log(1.0 - bw * t(idx) / fh / pw);
    y(idx) = exp(1i * arg) .* newCode(1:length(idx));
   
end