René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Sample code for ERA-OKID from UW is broken","articleBody":"### What is the issue?\r\nThis code must have worked at one time but is now broken. Have no previous experience with it running correctly.\r\n\r\nTwo issues related to:\r\n\r\n- http://databookuw.com ... DATA DRIVEN SCIENCE \u0026 ENGINEERING ... CODE.zip + DATA.zip (PYTHON CODE)\r\n\r\nNotebook containing the broken code:\r\n\r\n- ```CH09_SEC03_ERA_OKID.ipynb```\r\n\r\n### Steps to Reproduce\r\n\r\n1. Test on Python 3.10\r\n2. Run the notebook\r\n\r\n### Source changes to accommodate the failures\r\nThe following changes to the source were needed:\r\n**Issue 1. Slice assignment**\r\nChange \r\n    ```yFull[:,:,qi],t = impulse(sysFull,T=tspan,input=qi)```\r\nto\r\n    ```yFull[:,:,qi:qi+1],t = impulse(sysFull,T=tspan,input=qi)```\r\n\r\nChange\r\n    ```y1[:,:,qi],t1 = impulse(sysFull,np.arange(200),input=qi)```\r\n    ```y2[:,:,qi],t2 = impulse(sysERA,np.arange(100),input=qi)```\r\n    ```y3[:,:,qi],t3 = impulse(sysERAOKID,np.arange(100),input=qi)```\r\nto\r\n    ```y1[:,:,qi:qi+1],t1 = impulse(sysFull,np.arange(200),input=qi)```\r\n    ```y2[:,:,qi:qi+1],t2 = impulse(sysERA,np.arange(100),input=qi)```\r\n    ```y3[:,:,qi:qi+1],t3 = impulse(sysERAOKID,np.arange(100),input=qi)```\r\n\r\n**Issue 2. Invalid np array shape**\r\nChange\r\n    ```yRandom = lsim(sysFull,uRandom,range(200))[0].T # Output```\r\nto\r\n    ```yRandom = lsim(sysFull,uRandom.T,range(200))[0].T # Output```\r\n\r\n### Summary\r\nPotential root causes could be due to changes in this library or in changes to Python or both.","author":{"url":"https://github.com/RPellowski","@type":"Person","name":"RPellowski"},"datePublished":"2023-01-12T00:05:57.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/847/python-control/issues/847"}