sort loci in PoleZeroData#1070
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murrayrm merged 2 commits intopython-control:mainfrom Dec 2, 2024
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control/pzmap.py
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| System name. | ||
| sys : StateSpace or TransferFunction | ||
| System corresponding to the data. | ||
| sort_loci : bool, optional) |
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| sort_loci : bool, optional) | |
| sort_loci : bool, optional |
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There is a small misprint in the docstring. Besides that, this is ready to merge.
Not related to code: the PR description refers to Example 6.8 but links to Example 5.17. This PR is clearly relevant to Example 5.17, so I guess "Example 6.8" is a misprint or perhaps example numbers changed in the book, but I want to bring attention to it in case it indicates that more actions are necessary.
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This small PR adds the option to sort loci when creating a PoleZeroData object. This is useful if you create a PoleZeroData object in some way other than calling
root_locus_map(which sorts the data ahead of time).The need for this functionality came up when working through Example 5.17 of FBS2e (bicycle eigenvalue location versus speed), as shown in the following code:
https://github.com/murrayrm/fbs2e-python/blob/main/example-5.17-bicycle_stability.py
(At some point I would like to generalized the root locus capability to allow plotting an eigenvalue locus diagram against any free parameter in a nonlinear system, but that will take more time and effort.)