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Input names overlap in the concatenated objects. The input names from the right IDDATA object will be used.

Last post by fyousefi « Tue Mar 02, 2021 11:39 am

by fyousefi » Tue Mar 02, 2021 11:39 am

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Last post by fyousefi
Tue Mar 02, 2021 11:39 am
Negative frequencies have richer content than positive frequencies. Positive frequencies have been removed.

Last post by fyousefi « Tue Mar 02, 2021 11:39 am

by fyousefi » Tue Mar 02, 2021 11:39 am

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Last post by fyousefi
Tue Mar 02, 2021 11:39 am
The 'ssest' function does not support all nonpositive frequencies.

Last post by fyousefi « Tue Mar 02, 2021 11:38 am

by fyousefi » Tue Mar 02, 2021 11:38 am

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Last post by fyousefi
Tue Mar 02, 2021 11:38 am
Negative frequency points above the negative Nyquist frequency have been removed from the data.

Last post by fyousefi « Tue Mar 02, 2021 11:38 am

by fyousefi » Tue Mar 02, 2021 11:38 am

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Last post by fyousefi
Tue Mar 02, 2021 11:38 am
The frequency response of the data is not symmetric. The estimated model may have complex coefficients.

Last post by fyousefi « Tue Mar 02, 2021 11:38 am

by fyousefi » Tue Mar 02, 2021 11:38 am

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Last post by fyousefi
Tue Mar 02, 2021 11:38 am
Frequency points above the Nyquist frequency have been removed from the data.

Last post by fyousefi « Tue Mar 02, 2021 11:37 am

by fyousefi » Tue Mar 02, 2021 11:37 am

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Last post by fyousefi
Tue Mar 02, 2021 11:37 am
Detrending has no effect on data not containing the zero frequency.

Last post by fyousefi « Tue Mar 02, 2021 11:37 am

by fyousefi » Tue Mar 02, 2021 11:37 am

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Last post by fyousefi
Tue Mar 02, 2021 11:37 am
Changing the "Domain" property of the IDDATA object does not change (scale) the data. Use the "fft" and "ifft" methods t

Last post by fyousefi « Tue Mar 02, 2021 11:26 am

by fyousefi » Tue Mar 02, 2021 11:26 am

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498 Views

Last post by fyousefi
Tue Mar 02, 2021 11:26 am
To concatenate data objects with different sample times, you must set the "Tstart" property to a positive value for all

Last post by fyousefi « Tue Mar 02, 2021 11:26 am

by fyousefi » Tue Mar 02, 2021 11:26 am

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493 Views

Last post by fyousefi
Tue Mar 02, 2021 11:26 am
The value of the "SamplingInstants" property must be increasing along the data.

Last post by fyousefi « Tue Mar 02, 2021 11:25 am

by fyousefi » Tue Mar 02, 2021 11:25 am

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733 Views

Last post by fyousefi
Tue Mar 02, 2021 11:25 am
All concatenated objects must have the same value for the "InterSample" property.

Last post by fyousefi « Tue Mar 02, 2021 11:24 am

by fyousefi » Tue Mar 02, 2021 11:24 am

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Last post by fyousefi
Tue Mar 02, 2021 11:24 am
The number of input channels must be the same among concatenated objects.

Last post by fyousefi « Tue Mar 02, 2021 11:23 am

by fyousefi » Tue Mar 02, 2021 11:23 am

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511 Views

Last post by fyousefi
Tue Mar 02, 2021 11:23 am
Continuous-time frequency domain data cannot be resampled.

Last post by fyousefi « Tue Mar 02, 2021 11:23 am

by fyousefi » Tue Mar 02, 2021 11:23 am

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Last post by fyousefi
Tue Mar 02, 2021 11:23 am
The "retrend" command is not supported for frequency domain data. Type "help retrend" for more information.

Last post by fyousefi « Tue Mar 02, 2021 11:22 am

by fyousefi » Tue Mar 02, 2021 11:22 am

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Last post by fyousefi
Tue Mar 02, 2021 11:22 am
The second input argument of the "retrend" command must be a TrendInfo object. Type "help idpack.TrendInfo" for more inf

Last post by fyousefi « Tue Mar 02, 2021 11:22 am

by fyousefi » Tue Mar 02, 2021 11:22 am

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502 Views

Last post by fyousefi
Tue Mar 02, 2021 11:22 am
Trend information is not available because the data does not contain zero frequency.

Last post by fyousefi « Tue Mar 02, 2021 11:22 am

by fyousefi » Tue Mar 02, 2021 11:22 am

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675 Views

Last post by fyousefi
Tue Mar 02, 2021 11:22 am
The second input argument of the "detrend" command must be 0, 1, or a TrendInfo object. Type "help iddata/detrend" for m

Last post by fyousefi « Tue Mar 02, 2021 11:21 am

by fyousefi » Tue Mar 02, 2021 11:21 am

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524 Views

Last post by fyousefi
Tue Mar 02, 2021 11:21 am
The data has multiple values at zero frequency. Detrending of such data is not meaningful.

Last post by fyousefi « Tue Mar 02, 2021 11:20 am

by fyousefi » Tue Mar 02, 2021 11:20 am

0 Replies

548 Views

Last post by fyousefi
Tue Mar 02, 2021 11:20 am
The number of experiments must match between the IDDATA and the "TrendInfo" objects.

Last post by fyousefi « Tue Mar 02, 2021 11:20 am

by fyousefi » Tue Mar 02, 2021 11:20 am

0 Replies

522 Views

Last post by fyousefi
Tue Mar 02, 2021 11:20 am
The number of outputs represented in the specified "TrendInfo" object must equal those of the IDDATA object.

Last post by fyousefi « Tue Mar 02, 2021 11:19 am

by fyousefi » Tue Mar 02, 2021 11:19 am

0 Replies

503 Views

Last post by fyousefi
Tue Mar 02, 2021 11:19 am
A "TrendInfo" object cannot be used for detrending frequency domain data.

Last post by fyousefi « Tue Mar 02, 2021 11:19 am

by fyousefi » Tue Mar 02, 2021 11:19 am

0 Replies

494 Views

Last post by fyousefi
Tue Mar 02, 2021 11:19 am
When a "TrendInfo" object is specified as an input argument to the "detrend" command, the number of input arguments must

Last post by fyousefi « Tue Mar 02, 2021 11:18 am

by fyousefi » Tue Mar 02, 2021 11:18 am

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512 Views

Last post by fyousefi
Tue Mar 02, 2021 11:18 am
Trend information cannot be returned when breakpoints are specified for linear detrending.

Last post by fyousefi « Tue Mar 02, 2021 11:18 am

by fyousefi » Tue Mar 02, 2021 11:18 am

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454 Views

Last post by fyousefi
Tue Mar 02, 2021 11:18 am
Linear trends cannot be removed from frequency domain data.

Last post by fyousefi « Tue Mar 02, 2021 11:17 am

by fyousefi » Tue Mar 02, 2021 11:17 am

0 Replies

664 Views

Last post by fyousefi
Tue Mar 02, 2021 11:17 am
Incorrect specification of orders for time series data in the "segment" command. Use ORDERS = na or [na nc].

Last post by fyousefi « Tue Mar 02, 2021 11:17 am

by fyousefi » Tue Mar 02, 2021 11:17 am

0 Replies

526 Views

Last post by fyousefi
Tue Mar 02, 2021 11:17 am

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