System Identification Toolbox

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Not all output channels of the system could be found in the validation dataset.

Last post by fyousefi « Mon Mar 01, 2021 8:45 pm

by fyousefi » Mon Mar 01, 2021 8:45 pm

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619 Views

Last post by fyousefi
Mon Mar 01, 2021 8:45 pm
The prediction data intersample behavior does not match that of the data with which the model was estimated.

Last post by fyousefi « Mon Mar 01, 2021 8:45 pm

by fyousefi » Mon Mar 01, 2021 8:45 pm

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631 Views

Last post by fyousefi
Mon Mar 01, 2021 8:45 pm
Continuous-time frequency domain data cannot be used for prediction unless the prediction horizon is Inf or the model ha

Last post by fyousefi « Mon Mar 01, 2021 8:45 pm

by fyousefi » Mon Mar 01, 2021 8:45 pm

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687 Views

Last post by fyousefi
Mon Mar 01, 2021 8:45 pm
The initial conditions can be specified using a specification object (param.Continuous) only for state space models.

Last post by fyousefi « Mon Mar 01, 2021 8:43 pm

by fyousefi » Mon Mar 01, 2021 8:43 pm

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752 Views

Last post by fyousefi
Mon Mar 01, 2021 8:43 pm
The initial conditions can be specified using a specification object (param.Continuous) only for state space models.

Last post by fyousefi « Mon Mar 01, 2021 8:42 pm

by fyousefi » Mon Mar 01, 2021 8:42 pm

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688 Views

Last post by fyousefi
Mon Mar 01, 2021 8:42 pm
Prediction horizon has been replaced with Inf because the specified value was greater than or equal to the number of dat

Last post by fyousefi « Mon Mar 01, 2021 8:41 pm

by fyousefi » Mon Mar 01, 2021 8:41 pm

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663 Views

Last post by fyousefi
Mon Mar 01, 2021 8:41 pm
The values of the ''Input'' and ''Output'' fields of the initial condition structure must contain the same number of row

Last post by fyousefi « Mon Mar 01, 2021 8:41 pm

by fyousefi » Mon Mar 01, 2021 8:41 pm

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713 Views

Last post by fyousefi
Mon Mar 01, 2021 8:41 pm
The "C" property of the initialCondition object must contain { number,integer} rows.

Last post by fyousefi « Mon Mar 01, 2021 8:40 pm

by fyousefi » Mon Mar 01, 2021 8:40 pm

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674 Views

Last post by fyousefi
Mon Mar 01, 2021 8:40 pm
The initialCondition object must contain either 1 or { number,integer} elements (one for each data experiment). Type "h

Last post by fyousefi « Mon Mar 01, 2021 8:39 pm

by fyousefi » Mon Mar 01, 2021 8:39 pm

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676 Views

Last post by fyousefi
Mon Mar 01, 2021 8:39 pm
The structure value of the "InitialCondition" option must represent input-output response history (containing the fields

Last post by fyousefi « Mon Mar 01, 2021 8:38 pm

by fyousefi » Mon Mar 01, 2021 8:38 pm

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783 Views

Last post by fyousefi
Mon Mar 01, 2021 8:38 pm
A numerical value for initial conditions can be specified only for state-space models (idss or idgrey). The initial cond

Last post by fyousefi « Mon Mar 01, 2021 8:37 pm

by fyousefi » Mon Mar 01, 2021 8:37 pm

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731 Views

Last post by fyousefi
Mon Mar 01, 2021 8:37 pm
The character array value of the "InitialCondition" option of the command must be one of ''e'', ''d'' or ''z''. Fo

Last post by fyousefi « Mon Mar 01, 2021 8:37 pm

by fyousefi » Mon Mar 01, 2021 8:37 pm

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674 Views

Last post by fyousefi
Mon Mar 01, 2021 8:37 pm
The value of the InitialCondition option must be ''e'', ''z'' or a parameter specification object. Type "help forecastOp

Last post by fyousefi « Mon Mar 01, 2021 8:36 pm

by fyousefi » Mon Mar 01, 2021 8:36 pm

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692 Views

Last post by fyousefi
Mon Mar 01, 2021 8:36 pm
The model time unit does not match the past data time unit and cannot be scaled automatically.

Last post by fyousefi « Mon Mar 01, 2021 8:35 pm

by fyousefi » Mon Mar 01, 2021 8:35 pm

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653 Views

Last post by fyousefi
Mon Mar 01, 2021 8:35 pm
Future input data is not required for time series models. It will be ignored.

Last post by fyousefi « Mon Mar 01, 2021 8:35 pm

by fyousefi » Mon Mar 01, 2021 8:35 pm

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659 Views

Last post by fyousefi
Mon Mar 01, 2021 8:35 pm
In the "forecast(MODEL, PASTDATA, K, FUTUREINPUTS)" command, FUTUREINPUTS must be a double matrix or an IDDATA object co

Last post by fyousefi « Mon Mar 01, 2021 8:34 pm

by fyousefi » Mon Mar 01, 2021 8:34 pm

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782 Views

Last post by fyousefi
Mon Mar 01, 2021 8:34 pm
The value of the forecast horizon must be a positive integer.

Last post by fyousefi « Mon Mar 01, 2021 8:33 pm

by fyousefi » Mon Mar 01, 2021 8:33 pm

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673 Views

Last post by fyousefi
Mon Mar 01, 2021 8:33 pm
Specify past data and a forecast horizon. Type "help idmodel/forecast" for more information.

Last post by fyousefi « Mon Mar 01, 2021 8:33 pm

by fyousefi » Mon Mar 01, 2021 8:33 pm

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676 Views

Last post by fyousefi
Mon Mar 01, 2021 8:33 pm
The first { number,integer} samples of the computed output for model are taken directly from data due to the long d

Last post by fyousefi « Mon Mar 01, 2021 8:32 pm

by fyousefi » Mon Mar 01, 2021 8:32 pm

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675 Views

Last post by fyousefi
Mon Mar 01, 2021 8:32 pm
Zero frequency has been removed from the data set because the model contains an integrator.

Last post by fyousefi « Mon Mar 01, 2021 8:30 pm

by fyousefi » Mon Mar 01, 2021 8:30 pm

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687 Views

Last post by fyousefi
Mon Mar 01, 2021 8:30 pm
The noise component of the model indicates no white noise component. The resulting state-space data has unreliable noise

Last post by fyousefi « Mon Mar 01, 2021 8:30 pm

by fyousefi » Mon Mar 01, 2021 8:30 pm

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756 Views

Last post by fyousefi
Mon Mar 01, 2021 8:30 pm
No covariance information available in the model. Only the nominal response will be calculated.

Last post by fyousefi « Mon Mar 01, 2021 8:30 pm

by fyousefi » Mon Mar 01, 2021 8:30 pm

0 Replies

650 Views

Last post by fyousefi
Mon Mar 01, 2021 8:30 pm
In the "sim(model, data, ''Noise'')" command, the ''Noise'' input argument is ignored if data contains noise channels. T

Last post by fyousefi « Mon Mar 01, 2021 8:29 pm

by fyousefi » Mon Mar 01, 2021 8:29 pm

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651 Views

Last post by fyousefi
Mon Mar 01, 2021 8:29 pm
Specified initial states ignored because the model contains no states.

Last post by fyousefi « Mon Mar 01, 2021 8:28 pm

by fyousefi » Mon Mar 01, 2021 8:28 pm

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639 Views

Last post by fyousefi
Mon Mar 01, 2021 8:28 pm
Frequencies less than zero have been removed from the data.

Last post by fyousefi « Mon Mar 01, 2021 8:28 pm

by fyousefi » Mon Mar 01, 2021 8:28 pm

0 Replies

616 Views

Last post by fyousefi
Mon Mar 01, 2021 8:28 pm

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