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Differences in intersample behavior across input channels will be ignored and will be assumed for all input channe

Last post by fyousefi « Tue Mar 02, 2021 8:38 pm

by fyousefi » Tue Mar 02, 2021 8:38 pm

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Last post by fyousefi
Tue Mar 02, 2021 8:38 pm
When estimating continuous-time models using discrete-time data, the number of poles must be greater than or equal to th

Last post by fyousefi « Tue Mar 02, 2021 8:38 pm

by fyousefi » Tue Mar 02, 2021 8:38 pm

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Last post by fyousefi
Tue Mar 02, 2021 8:38 pm
Estimation problem is ill-conditioned. Model could not be refined for the requested stability or regularization constrai

Last post by fyousefi « Tue Mar 02, 2021 8:37 pm

by fyousefi » Tue Mar 02, 2021 8:37 pm

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Last post by fyousefi
Tue Mar 02, 2021 8:37 pm
"InitialState" option is treated as 'estimate' because initial states can be specified only when refining an existing mo

Last post by fyousefi « Tue Mar 02, 2021 6:36 pm

by fyousefi » Tue Mar 02, 2021 6:36 pm

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Last post by fyousefi
Tue Mar 02, 2021 6:36 pm
The value of the "InitialState" option is inconsistent with the number of experiments in the estimation data set.

Last post by fyousefi « Tue Mar 02, 2021 6:35 pm

by fyousefi » Tue Mar 02, 2021 6:35 pm

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Last post by fyousefi
Tue Mar 02, 2021 6:35 pm
You cannot use both the options object as well as name-value pairs for estimation options. Use of name-value pairs for e

Last post by fyousefi « Tue Mar 02, 2021 6:35 pm

by fyousefi » Tue Mar 02, 2021 6:35 pm

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Last post by fyousefi
Tue Mar 02, 2021 6:35 pm
Using identical fixed values for initial states may not be a suitable for estimation using multi-experiment data. Consid

Last post by fyousefi « Tue Mar 02, 2021 6:34 pm

by fyousefi » Tue Mar 02, 2021 6:34 pm

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Last post by fyousefi
Tue Mar 02, 2021 6:34 pm
The input intersample behavior must be the same across all estimation data experiments. Those corresponding to the first

Last post by fyousefi « Tue Mar 02, 2021 6:34 pm

by fyousefi » Tue Mar 02, 2021 6:34 pm

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Last post by fyousefi
Tue Mar 02, 2021 6:34 pm
The value of the "SSParameterization" argument must be ''free'', ''companion'', ''modal'' or ''canonical''. Note that "S

Last post by fyousefi « Tue Mar 02, 2021 6:33 pm

by fyousefi » Tue Mar 02, 2021 6:33 pm

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Last post by fyousefi
Tue Mar 02, 2021 6:33 pm
You can only estimate models of Output Error (OE) structure using frequency domain data. Orders "na", "nc" and "nd" must

Last post by fyousefi « Tue Mar 02, 2021 6:32 pm

by fyousefi » Tue Mar 02, 2021 6:32 pm

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Last post by fyousefi
Tue Mar 02, 2021 6:32 pm
There are too few samples in the data to support estimation of initial conditions. Zero initial conditions will be used

Last post by fyousefi « Tue Mar 02, 2021 6:32 pm

by fyousefi » Tue Mar 02, 2021 6:32 pm

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Last post by fyousefi
Tue Mar 02, 2021 6:32 pm
The value of the "InitialCondition" option has been changed to "backcast" because of fixed parameters in the model.

Last post by fyousefi « Tue Mar 02, 2021 6:31 pm

by fyousefi » Tue Mar 02, 2021 6:31 pm

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Last post by fyousefi
Tue Mar 02, 2021 6:31 pm
Frequency domain data can only handle estimation of Output Error (OE) structure models. The model structure will be conv

Last post by fyousefi « Tue Mar 02, 2021 6:31 pm

by fyousefi » Tue Mar 02, 2021 6:31 pm

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426 Views

Last post by fyousefi
Tue Mar 02, 2021 6:31 pm
When estimating a discrete time model, the sample time of the model must match that of the estimation data.

Last post by fyousefi « Tue Mar 02, 2021 6:31 pm

by fyousefi » Tue Mar 02, 2021 6:31 pm

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475 Views

Last post by fyousefi
Tue Mar 02, 2021 6:31 pm
Continuous-time polynomial models cannot be estimated using time domain data.

Last post by fyousefi « Tue Mar 02, 2021 6:30 pm

by fyousefi » Tue Mar 02, 2021 6:30 pm

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Last post by fyousefi
Tue Mar 02, 2021 6:30 pm
The value specified for the "InitialState" option is invalid. Type "help ssestOptions" for more information on assignabl

Last post by fyousefi « Tue Mar 02, 2021 6:29 pm

by fyousefi » Tue Mar 02, 2021 6:29 pm

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438 Views

Last post by fyousefi
Tue Mar 02, 2021 6:29 pm
The numeric value of the "InitialState" option must be a finite column vector or matrix with as many columns as there ar

Last post by fyousefi « Tue Mar 02, 2021 6:28 pm

by fyousefi » Tue Mar 02, 2021 6:28 pm

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436 Views

Last post by fyousefi
Tue Mar 02, 2021 6:28 pm
The character vector value of the "InitialState" option must be one of: ''auto'', ''zero'', ''estimate'', ''backcast'',

Last post by fyousefi « Tue Mar 02, 2021 6:28 pm

by fyousefi » Tue Mar 02, 2021 6:28 pm

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446 Views

Last post by fyousefi
Tue Mar 02, 2021 6:28 pm
The "Free" flags of the model parameters will be updated to accommodate the "FixedParameter" specifications. Note that t

Last post by fyousefi « Tue Mar 02, 2021 6:27 pm

by fyousefi » Tue Mar 02, 2021 6:27 pm

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428 Views

Last post by fyousefi
Tue Mar 02, 2021 6:27 pm
Value of the obsolete algorithm option "FixedParameter" is ignored when an initial model is not used for estimation.

Last post by fyousefi « Tue Mar 02, 2021 6:27 pm

by fyousefi » Tue Mar 02, 2021 6:27 pm

0 Replies

463 Views

Last post by fyousefi
Tue Mar 02, 2021 6:27 pm
The data matrix must have more columns than the number of inputs implied by the length of specified "nk" value. It is re

Last post by fyousefi « Tue Mar 02, 2021 6:26 pm

by fyousefi » Tue Mar 02, 2021 6:26 pm

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435 Views

Last post by fyousefi
Tue Mar 02, 2021 6:26 pm
Incorrect specification for model orders in the "{0}" command. For continuous-time models, specify ORDERS as an integer

Last post by fyousefi « Tue Mar 02, 2021 6:25 pm

by fyousefi » Tue Mar 02, 2021 6:25 pm

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403 Views

Last post by fyousefi
Tue Mar 02, 2021 6:25 pm
The model orders must be compatible with the input and output dimensions of the estimation data. Type "help for mor

Last post by fyousefi « Tue Mar 02, 2021 6:23 pm

by fyousefi » Tue Mar 02, 2021 6:23 pm

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421 Views

Last post by fyousefi
Tue Mar 02, 2021 6:23 pm
The model orders must be compatible with the input and output dimensions of the estimation data. Type "help for mor

Last post by fyousefi « Tue Mar 02, 2021 6:22 pm

by fyousefi » Tue Mar 02, 2021 6:22 pm

0 Replies

431 Views

Last post by fyousefi
Tue Mar 02, 2021 6:22 pm
In the "polyest" command, the number of columns in the orders matrix must be equal to NY+2+3*NU, where NY = number of ou

Last post by fyousefi « Tue Mar 02, 2021 6:21 pm

by fyousefi » Tue Mar 02, 2021 6:21 pm

0 Replies

425 Views

Last post by fyousefi
Tue Mar 02, 2021 6:21 pm

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