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Title: rlocus evaluation for a single gain value · Issue #1063 · python-control/python-control · GitHub

Open Graph Title: rlocus evaluation for a single gain value · Issue #1063 · python-control/python-control

X Title: rlocus evaluation for a single gain value · Issue #1063 · python-control/python-control

Description: I recall in the past being able to evaluate rlocus for a single gain to obtain the closed-loop poles (as well as plotting), along the lines of: L = tf([1,1],[1,2,3]) rr = rlocus(L, gains=np.array([1])) but this fails giving the final mes...

Open Graph Description: I recall in the past being able to evaluate rlocus for a single gain to obtain the closed-loop poles (as well as plotting), along the lines of: L = tf([1,1],[1,2,3]) rr = rlocus(L, gains=np.array([...

X Description: I recall in the past being able to evaluate rlocus for a single gain to obtain the closed-loop poles (as well as plotting), along the lines of: L = tf([1,1],[1,2,3]) rr = rlocus(L, gains=np.array([...

Opengraph URL: https://github.com/python-control/python-control/issues/1063

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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"rlocus evaluation for a single gain value","articleBody":"I recall in the past being able to evaluate rlocus for a single gain to obtain the closed-loop poles (as well as plotting), along the lines of:\r\n\r\nL = tf([1,1],[1,2,3])\r\nrr = rlocus(L, gains=np.array([1]))\r\n\r\nbut this fails giving the final message: \r\n.../site-packages/control/pzmap.py:124\r\nValueError: zero-size array to reduction operation minimum which has no identity\r\n\r\nWhile this does work:\r\nrr = rlocus(L, gains=np.array([1,1]))\r\nallowing for an evaluation at a single gain would be nice.","author":{"url":"https://github.com/JonHowMIT","@type":"Person","name":"JonHowMIT"},"datePublished":"2024-11-21T12:55:29.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/1063/python-control/issues/1063"}

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