Fix forced_response time inference for transposed inputs#1229
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slivingston
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Jun 8, 2026
| # Set T to equally spaced samples with same length as U | ||
| if U.ndim == 1: | ||
| n_steps = U.shape[0] | ||
| elif transpose: |
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Why add another branch here instead of or with the above? I.e.,
if U.ndim == 1 or transpose:
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Thanks, good point. I simplified this in d12d4896 to use if U.ndim == 1 or transpose: since both cases use U.shape[0].
Rechecked locally:
python -m pytest control\tests\timeresp_test.py::TestTimeresp::test_forced_response_transpose_without_time_vector -qpython -m pytest control\tests\timeresp_test.py -qpython -m ruff check control\timeresp.py control\tests\timeresp_test.pypython -m compileall -q control\timeresp.py control\tests\timeresp_test.pygit diff --check
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Summary
Fixes #931.
When
forced_response()is called for a discrete-time system withtimepts=None, it infers the generated time vector length frominputs. Withtranspose=True, 2D input data is supplied in(time, input)order, but the current code still readsU.shape[1], treating the input count as the number of time steps.This changes the inference to use
U.shape[0]for 2D inputs whentranspose=True, matching the later_check_convert_array(..., transpose=True)conversion.Validation
forced_response(sys, inputs=U, transpose=True)withU.shape == (5, 2)failed withValueError: Parameter U: Wrong shape ... Expected: (2, 2).python -m pytest control/tests/timeresp_test.py -k forced_response_transpose_without_time_vector -qpassed.python -m pytest control/tests/timeresp_test.py -q -p no:cacheproviderpassed: 253 passed, 46 skipped.python -m ruff check --no-cache control\timeresp.py control\tests\timeresp_test.pypassed.PYTHONPYCACHEPREFIX=C:\tmp\pycache-python-control-931 python -m compileall -q control\timeresp.py control\tests\timeresp_test.pypassed.git diff --checkpassed.