additional documentation updates + legacy settings for 0.10.1 Nyquist…

… plots
murrayrm · Jul 5, 2025 · Jul 4, 2025 · Jul 5, 2025 · Jul 5, 2025 · Jul 5, 2025
commit d1b005c1eba7d47d63f558bf0c02620f3ac2558f
diff --git a/control/config.py b/control/config.py
@@ -297,7 +297,7 @@ def use_legacy_defaults(version):
     Parameters
     ----------
     version : string
-        Version number of the defaults desired. Ranges from '0.1' to '0.10.1'.
+        Version number of `python-control` to use for setting defaults.
 
     Examples
     --------
@@ -342,6 +342,14 @@ def use_legacy_defaults(version):
     #
     reset_defaults()            # start from a clean slate
 
+    # Version 0.10.2:
+    if major == 0 and minor < 10 or (minor == 10 and patch < 2):
+        from math import inf
+
+        # Reset Nyquist defaults
+        set_defaults('nyquist', arrows=2, max_curve_magnitude=20,
+                     blend_fraction=0, indent_points=50)
+
     # Version 0.9.2:
     if major == 0 and minor < 9 or (minor == 9 and patch < 2):
         from math import inf

diff --git a/control/freqplot.py b/control/freqplot.py
@@ -1659,7 +1659,7 @@ def nyquist_plot(
         portions of the contour are plotted using a different line style.
     label : str or array_like of str, optional
         If present, replace automatically generated label(s) with the given
-        label(s).  If sysdata is a list, strings should be specified for each
+        label(s).  If `data` is a list, strings should be specified for each
         system.
     label_freq : int, optional
         Label every nth frequency on the plot.  If not specified, no labels
@@ -1690,8 +1690,8 @@ def nyquist_plot(
         elements is equivalent to providing `omega_limits`.
     omega_num : int, optional
         Number of samples to use for the frequency range.  Defaults to
-        `config.defaults['freqplot.number_of_samples']`.  Ignored if data is
-        not a list of systems.
+        `config.defaults['freqplot.number_of_samples']`.  Ignored if `data`
+        is not a system or list of systems.
     plot : bool, optional
         (legacy) If given, `nyquist_plot` returns the legacy return values
         of (counts, contours).  If False, return the values with no plot.

diff --git a/control/matlab/__init__.py b/control/matlab/__init__.py
@@ -6,7 +6,7 @@
 
 This subpackage contains a number of functions that emulate some of
 the functionality of MATLAB.  The intent of these functions is to
-provide a simple interface to the python control systems library
+provide a simple interface to the Python Control Systems Library
 (python-control) for people who are familiar with the MATLAB Control
 Systems Toolbox (tm).
 

diff --git a/doc/develop.rst b/doc/develop.rst
@@ -110,8 +110,8 @@ Filenames
 * Source files are lower case, usually less than 10 characters (and 8
   or less is better).
 
-* Unit tests (in `control/tests/`) are of the form `module_test.py` or
-  `module_function.py`.
+* Unit tests (in `control/tests/`) are of the form `module_test.py`,
+  `module_functionality_test.py`, or `functionality_test.py`.
 
 
 Class names

diff --git a/doc/intro.rst b/doc/intro.rst
@@ -126,7 +126,7 @@ some things to keep in mind:
 
 * Vectors and matrices used as arguments to functions can be written
   using lists, with commas required between elements and column
-  vectors implemented as nested list .  So [1 2 3] must be written as
+  vectors implemented as nested lists.  So [1 2 3] must be written as
   [1, 2, 3] and matrices are written using 2D nested lists, e.g., [[1,
   2], [3, 4]].
 * Functions that in MATLAB would return variable numbers of values
@@ -150,12 +150,12 @@ This documentation has a number of notional conventions and functionality:
   Manual, which contains documentation for all functions, classes,
   configurable default parameters, and other detailed information.
 
-* Class, functions, and methods with additional documentation appear
+* Classes, functions, and methods with additional documentation appear
   in a bold, code font that link to the Reference Manual. Example: `ss`.
 
 * Links to other sections appear in blue. Example: :ref:`nonlinear-systems`.
 
-* Parameters appear in a (non-bode) code font, as do code fragments.
+* Parameters appear in a (non-bold) code font, as do code fragments.
   Example: `omega`.
 
 * Example code is contained in code blocks that can be copied using

diff --git a/doc/releases/0.10.2-notes.rst b/doc/releases/0.10.2-notes.rst
@@ -9,15 +9,16 @@ Version 0.10.2 Release Notes (current)
 * `GitHub release page
   <https://github.com/python-control/python-control/releases/tag/0.10.2>`_
 
-This release contains numerous bug fixes and improvements, including
-substantial updates to the documentation, including refactoring of the
-online manual into a User Guide and a Reference Manual, as well as
-more consistent and complete docstrings. In addition, signals and
-systems can now be referenced using signal labels in addition to
-offsets, and phase plane plots make use of the matplotlib
-`~matplotlib.pyplot.streamplot` function.  Numerous other changes have
-been made to improve consistency of keyword arguments and function
-names, with legacy aliases available.
+This release includes numerous bug fixes and improvements, with major
+changes such as a substantial reorganization of the documentation into
+a User Guide and Reference Manual, more consistent and complete
+docstrings, and support for referencing signals and subsystems by name
+as well as by index. Phase plane plots now use matplotlib’s
+`streamplot` for better visuals. New functions include `combine_tf`
+and `split_tf` for MIMO/SISO conversion and `disk_margins` for
+stability analysis. Additional improvements include consistent keyword
+usage, expanded LTI system methods for plotting and responses, better
+error messages, and legacy aliases to maintain backward compatibility.
 
 This version of `python-control` requires Python 3.10 or higher, NumPy
 1.23 or higher (2.x recommended), and SciPy 1.8 or higher.

diff --git a/examples/python-control_tutorial.ipynb b/examples/python-control_tutorial.ipynb
@@ -94,7 +94,7 @@
     "id": "qMVGK15gNQw2"
    },
    "source": [
-    "## Example 1: Open loop analysis of a coupled mass spring system\n",
+    "## Example 1: Open Loop Analysis of a Coupled Mass Spring System\n",
     "\n",
     "Consider the spring mass system below:\n",
     "\n",
@@ -781,7 +781,7 @@
    "id": "2f27f767-e012-45f9-8b76-cc040cfc89e2",
    "metadata": {},
    "source": [
-    "## Example 2: Trajectory tracking for a kinematic vehicle model\n",
+    "## Example 2: Trajectory Tracking for a Kinematic Vehicle Model\n",
     "\n",
     "This example illustrates the use of python-control to model, analyze, and design nonlinear control systems.\n",
     "\n",
@@ -1213,7 +1213,7 @@
    "id": "03b1fd75-579c-47da-805d-68f155957084",
    "metadata": {},
    "source": [
-    "## Computing environment"
+    "## Computing Environment"
    ]
   },
   {