System Identification Toolbox

New Topic

1431 topics

Page 48 of 58
- Jump to page:
Previous
1
…
46
47
48
49
50
…
58
Next

Topics

Replies

Views

Last post

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

0 Replies

356 Views

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

0 Replies

535 Views

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

0 Replies

428 Views

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

0 Replies

556 Views

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

0 Replies

375 Views

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

0 Replies

417 Views

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

0 Replies

375 Views

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

0 Replies

386 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

0 Replies

373 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

0 Replies

617 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

0 Replies

357 Views

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

0 Replies

402 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

0 Replies

363 Views

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

0 Replies

393 Views

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

0 Replies

388 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

0 Replies

546 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

0 Replies

405 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

428 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

397 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

375 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

370 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

0 Replies

375 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

0 Replies

339 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

544 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

406 Views

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

New Topic

1431 topics

Page 48 of 58
- Jump to page:
Previous
1
…
46
47
48
49
50
…
58
Next

Return to Board Index

Who is online

Users browsing this forum: No registered users and 6 guests

Forum permissions

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum