SysIdent Compare: Plot only selected outputs
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Hello!
using "compare" from the System Identification Toolbox creates a quick way to compare the created model with the data. But when I use a large model (e.g. with 103 output variables), you cannot see anything in the plot.
% code to plot model comparison with measurement data
compare(id_data, model);
Is there an option to plot only selected outputs using compare?
Thanks,
Christoph
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Harald
2024-5-29
Hi,
my experience with System Identification Toolbox is admittedly limited.
From the documentation, I would try to pass a compareOptions object to compare:
opt = compareOptions('Samples', Samples);
compare(id_data, model, opt);
From the doc of compareOptions:
Specify Samples as a vector containing the data sample indices. For multiexperiment data, use a cell array of Ne vectors, where Ne is the number of experiments.
Perhaps, this already helps?
Best wishes,
Harald
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Christoph
2024-6-3
Harald
2024-6-3
Hi Christoph,
could you share more details on what you have tried, please? Unless you are still getting the same results, how do they now deviate from what you are looking for?
Best wishes,
Harald
Christoph
2024-6-4
Hi Harald,
i tried your suggestion, i.e.:
opt = compareOptions('Samples', [1:10]);
compare(id_data, model, opt)
but there were not any changes to the plot:
My assumption was that the number of samples (time samples) are now cut (therefore only the ten first timepoints of data are plotted), but this was not the case. I don't know what exactly this option does.
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