System Identification Toolbox

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When specifying filter as weights, it must be a cell array of length equal to the number of experiments in the data.

Last post by fyousefi « Tue Mar 02, 2021 11:03 am

by fyousefi » Tue Mar 02, 2021 11:03 am

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Last post by fyousefi
Tue Mar 02, 2021 11:03 am
Frequency weights can be specified only for frequency domain data. Use the "fft" command to transform data into frequenc

Last post by fyousefi « Tue Mar 02, 2021 11:03 am

by fyousefi » Tue Mar 02, 2021 11:03 am

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Last post by fyousefi
Tue Mar 02, 2021 11:03 am
In the "idfilt" command, the option "FilterOrder" must be followed by an integer value.

Last post by fyousefi « Tue Mar 02, 2021 11:02 am

by fyousefi » Tue Mar 02, 2021 11:02 am

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Last post by fyousefi
Tue Mar 02, 2021 11:02 am
The "Frequency" property values must be the same among the data sets being concatenated.

Last post by fyousefi « Tue Mar 02, 2021 11:02 am

by fyousefi » Tue Mar 02, 2021 11:02 am

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Last post by fyousefi
Tue Mar 02, 2021 11:02 am
The sampling instants must coincide for the data objects being concatenated. For equisampled data, check that the values

Last post by fyousefi « Tue Mar 02, 2021 11:01 am

by fyousefi » Tue Mar 02, 2021 11:01 am

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Last post by fyousefi
Tue Mar 02, 2021 11:01 am
The number of samples in the IDDATA objects being concatenated must be the same.

Last post by fyousefi « Tue Mar 02, 2021 11:01 am

by fyousefi » Tue Mar 02, 2021 11:01 am

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Last post by fyousefi
Tue Mar 02, 2021 11:01 am
In the "fft(DATA, N)" command, N must be an integer or a row vector of Nexp integers, where Nexp is the number of experi

Last post by fyousefi « Tue Mar 02, 2021 11:00 am

by fyousefi » Tue Mar 02, 2021 11:00 am

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Last post by fyousefi
Tue Mar 02, 2021 11:00 am
The first input argument of the "fft" command must be a time-domain data object. Use the "ifft" command to convert from

Last post by fyousefi « Tue Mar 02, 2021 10:59 am

by fyousefi » Tue Mar 02, 2021 10:59 am

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Last post by fyousefi
Tue Mar 02, 2021 10:59 am
The number of samples in data must be greater than the number of channels. Check that the data is not transposed inadver

Last post by fyousefi « Tue Mar 02, 2021 10:58 am

by fyousefi » Tue Mar 02, 2021 10:58 am

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Last post by fyousefi
Tue Mar 02, 2021 10:58 am
The qualifier "end" cannot be used for sample selection from a multi-experiment IDDATA object.

Last post by fyousefi « Tue Mar 02, 2021 10:57 am

by fyousefi » Tue Mar 02, 2021 10:57 am

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Last post by fyousefi
Tue Mar 02, 2021 10:57 am
A frequency domain IDDATA object based on real time signals cannot be concatenated with one based on complex signals. Us

Last post by fyousefi « Tue Mar 02, 2021 10:57 am

by fyousefi » Tue Mar 02, 2021 10:57 am

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Last post by fyousefi
Tue Mar 02, 2021 10:57 am
The number of experiments must be the same among data objects being concatenated. Type "size(DATA, 'Ne')" to determine t

Last post by fyousefi « Tue Mar 02, 2021 10:56 am

by fyousefi » Tue Mar 02, 2021 10:56 am

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496 Views

Last post by fyousefi
Tue Mar 02, 2021 10:56 am
Time domain data cannot be concatenated with frequency domain data.

Last post by fyousefi « Tue Mar 02, 2021 10:56 am

by fyousefi » Tue Mar 02, 2021 10:56 am

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Last post by fyousefi
Tue Mar 02, 2021 10:56 am
The "chgFreqUnit" command can be applied only to frequency domain data sets.

Last post by fyousefi « Tue Mar 02, 2021 10:55 am

by fyousefi » Tue Mar 02, 2021 10:55 am

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Last post by fyousefi
Tue Mar 02, 2021 10:55 am
The input-output and array sizes of the models being merged must match.

Last post by fyousefi « Tue Mar 02, 2021 10:54 am

by fyousefi » Tue Mar 02, 2021 10:54 am

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Last post by fyousefi
Tue Mar 02, 2021 10:54 am
Models being merged must be of the same type, input-output size and structure.

Last post by fyousefi « Tue Mar 02, 2021 10:53 am

by fyousefi » Tue Mar 02, 2021 10:53 am

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469 Views

Last post by fyousefi
Tue Mar 02, 2021 10:53 am
Horizontal concatenation of IDARX models with different A polynomials transforms the resu

Last post by fyousefi « Tue Mar 02, 2021 10:52 am

by fyousefi » Tue Mar 02, 2021 10:52 am

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464 Views

Last post by fyousefi
Tue Mar 02, 2021 10:52 am
Horizontal concatenation of IDARX models with different A polynomials transforms the resu

Last post by fyousefi « Tue Mar 02, 2021 10:51 am

by fyousefi » Tue Mar 02, 2021 10:51 am

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475 Views

Last post by fyousefi
Tue Mar 02, 2021 10:51 am
Input delays must match among the concatenated models.

Last post by fyousefi « Tue Mar 02, 2021 10:51 am

by fyousefi » Tue Mar 02, 2021 10:51 am

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498 Views

Last post by fyousefi
Tue Mar 02, 2021 10:51 am
Nonlinearity estimator objects cannot be concatenated with other types of data.

Last post by fyousefi « Tue Mar 02, 2021 10:50 am

by fyousefi » Tue Mar 02, 2021 10:50 am

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460 Views

Last post by fyousefi
Tue Mar 02, 2021 10:50 am
You are going to use the data to estimate nonlinear ARX models.

Last post by fyousefi « Tue Mar 02, 2021 8:45 am

by fyousefi » Tue Mar 02, 2021 8:45 am

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429 Views

Last post by fyousefi
Tue Mar 02, 2021 8:45 am
Data is irregularly sampled. Information on excitation level cannot be obtained for such data.

Last post by fyousefi « Tue Mar 02, 2021 8:44 am

by fyousefi » Tue Mar 02, 2021 8:44 am

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423 Views

Last post by fyousefi
Tue Mar 02, 2021 8:44 am
The inputs { number,integer} and { number,integer} are parallel. A model may not be identifiable using these inputs.

Last post by fyousefi « Tue Mar 02, 2021 8:43 am

by fyousefi » Tue Mar 02, 2021 8:43 am

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415 Views

Last post by fyousefi
Tue Mar 02, 2021 8:43 am
The input in experiment number { number,integer} is essentially a constant. Estimating parameters associated with this

Last post by fyousefi « Tue Mar 02, 2021 8:42 am

by fyousefi » Tue Mar 02, 2021 8:42 am

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427 Views

Last post by fyousefi
Tue Mar 02, 2021 8:42 am
The input number { number,integer} in experiment number {1,number,integer} is essentially a constant. Estimating parame

Last post by fyousefi « Tue Mar 02, 2021 8:41 am

by fyousefi » Tue Mar 02, 2021 8:41 am

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447 Views

Last post by fyousefi
Tue Mar 02, 2021 8:41 am

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