how can I plot nested structure fields?

Question

nirmala rajagopal 2017-3-22

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/331374-how-can-i-plot-nested-structure-fields

编辑： Walter Roberson 2022-8-18

I have the output as such:

 >> y=spectrm(1).hata_pathloss_L50(1).ant_rec()
 y = 197.1081  184.6407  175.9222

spectrm is a structure with fields 'freq', 'hata_pathloss_L50'{ht1, ht2, ht3} and receiver antenna height {htr1, htr2, htr3}. For each ht1, ht2 and ht3 there are htr1, htr2 and htr3 and for each freq there are ht1, ht2 and ht3. How to plot freq in x-axis and pathloss in y axis? the spectrm structure is also an array. say about 10. so there are around 10 freqs

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Answer 1

Mehmet Burak Ekinci 2022-8-18

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/331374-how-can-i-plot-nested-structure-fields#answer_1028985

编辑：Walter Roberson 2022-8-18

在 MATLAB Online 中打开

As far as i know there is no built in support for getting values or plotting nested structure arrays.

I recently uploaded my custom matlab functions in file exchange:

https://www.mathworks.com/matlabcentral/fileexchange/116130-matlab-struct-operations

It is for plotting and getting values of large nested struct arrays and it applies to your problem.

clear spectrm
% create example struct array based on your explanation
for i = 1:10
    spectrm(i,1).freq = i;
    spectrm(i,1).hata_pathloss_L50(1).ant_rec = (1:3)*i;
    spectrm(i,1).hata_pathloss_L50(2).ant_rec = (4:6)*i;
    spectrm(i,1).hata_pathloss_L50(3).ant_rec = (7:9)*i;
end
% retreive struct array elements
freqs  = getNestedField(spectrm,'freq');
losses = getNestedField(spectrm,'hata_pathloss_L50.ant_rec');
% use struct array plotter (you may also use "plot(freqs,losses)")
plotStructArray(spectrm,'hata_pathloss_L50.ant_rec',freqs);
% your data will be plotted in order of
% ht1.htr1, ht1.htr2, ht1.htr3, ht2.htr1, .... ht10.htr1, ht10.htr2,
% ht10.htr3