DEP: signal: remove scipy.signal.{lsim2,impulse2,step2} (scipy#19675)

* DEP: signal: remove scipy.signal.{lsim2,impulse2,step2}
agriyakhetarpal · Dec 21, 2023 · e72de07 · e72de07
1 parent b3ba73a
commit e72de07
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diff --git a/benchmarks/benchmarks/signal.py b/benchmarks/benchmarks/signal.py
@@ -175,9 +175,6 @@ def setup(self):
     def time_lsim(self):
         signal.lsim(self.system, self.u, self.t)
 
-    def time_lsim2(self):
-        signal.lsim2(self.system, self.u, self.t)
-
     def time_step(self):
         signal.step(self.system, T=self.t)
 

diff --git a/doc/source/conf.py b/doc/source/conf.py
@@ -38,7 +38,7 @@
 
 sys.path.insert(0, os.path.abspath(os.path.dirname(__file__)))
 
-import numpydoc.docscrape as np_docscrape  # noqa:E402
+import numpydoc.docscrape as np_docscrape  # noqa: E402
 
 extensions = [
     'sphinx.ext.autodoc',
@@ -322,9 +322,6 @@
 plot_pre_code = """
 import warnings
 for key in (
-        'lsim2 is deprecated',  # Deprecation of scipy.signal.lsim2
-        'impulse2 is deprecated',  # Deprecation of scipy.signal.impulse2
-        'step2 is deprecated',  # Deprecation of scipy.signal.step2
         'interp2d` is deprecated',  # Deprecation of scipy.interpolate.interp2d
         'scipy.misc',  # scipy.misc deprecated in v1.10.0; use scipy.datasets
         'kurtosistest only valid',  # intentionally "bad" excample in docstring

diff --git a/doc/source/dev/roadmap-detailed.rst b/doc/source/dev/roadmap-detailed.rst
@@ -307,10 +307,9 @@ things are done in `interpolate`), and eliminate any duplication.
 
 *Filter design*: merge `firwin` and `firwin2` so `firwin2` can be removed.
 
-*Continuous-Time Linear Systems*: remove `lsim2`, `impulse2`, `step2`.  The
-`lsim`, `impulse` and `step` functions now "just work" for any input system.
-Further improve the performance of ``ltisys`` (fewer internal transformations
-between different representations). Fill gaps in lti system conversion functions.
+*Continuous-Time Linear Systems*: Further improve the performance of ``ltisys``
+(fewer internal transformations between different representations). Fill gaps in lti
+system conversion functions.
 
 *Second Order Sections*: Make SOS filtering equally capable as existing
 methods. This includes ltisys objects, an `lfiltic` equivalent, and numerically

diff --git a/scipy/signal/__init__.py b/scipy/signal/__init__.py
@@ -172,11 +172,8 @@
    TransferFunction -- Linear time invariant system in transfer function form.
    ZerosPolesGain   -- Linear time invariant system in zeros, poles, gain form.
    lsim             -- Continuous-time simulation of output to linear system.
-   lsim2            -- Like lsim, but `scipy.integrate.odeint` is used.
    impulse          -- Impulse response of linear, time-invariant (LTI) system.
-   impulse2         -- Like impulse, but `scipy.integrate.odeint` is used.
    step             -- Step response of continuous-time LTI system.
-   step2            -- Like step, but `scipy.integrate.odeint` is used.
    freqresp         -- Frequency response of a continuous-time LTI system.
    bode             -- Bode magnitude and phase data (continuous-time LTI).