How Can I extract the Spectrum data from the "Spectrum Analyzer" in Matlab Simulink?

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As shown in the title, I want to extract the power density data displayed in the "Spectrum Analyzer" into a matrix or a .mat file.
I have tried to print it in figure and use the brush tool, but it does not work, could anybody help me? Thank you!

Answers (2)

Khodour Al Kadry
Khodour Al Kadry on 14 Jul 2021
Hi Xuesu
You can the method getSpectrumData to extract the data from the scope. Please refer to the following documentation pages for more info and examples:
dsp.SpectrumAnalyzer getSpectrumData
Spectrum Analyzer Bloxk getSpectrumData
-Khodour

Anand Kumar
Anand Kumar on 27 Apr 2022
Hope this works.
model = 'filename.slx';
open_system(model)
sablock = 'filename/Spectrum Analyzer';
cfg = get_param(sablock,'ScopeConfiguration');
cfg.CursorMeasurements.Enable = true;
cfg.ChannelMeasurements.Enable = true;
cfg.PeakFinder.Enable = true;
cfg.DistortionMeasurements.Enable = true;
sim(model)
data = getMeasurementsData(cfg)
specTable = getSpectrumData(cfg)

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