How to perform Discrete-Time Fourier Transform (DTFT) on a TDMS file using MATLAB

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I have a tdms file , now I need to DTFT to frequency domain dddeecfile_path = "F:\\.Trashes\\501\\test tdms write\\C6.tdms";
fprintf('Load tdms data from:\n%s\n', file_path);
data = tdmsread(file_path);
data_1 = data{:, 1};
X = data_1{:, :};
N = length(X); % 數據長度
X_fft = fft(X, N) / N; % 正規化
frequencies = (0:N-1)*(1/N); % 頻率向量
figure;
plot(frequencies, abs(X_fft)) % 繪製FFT的幅度
xlabel('頻率 (Hz)')
ylabel('幅度')
title('信號的FFT')

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