René's URL Explorer Experiment


Title: fix issue with multiplying MIMO LTI system by scalar by murrayrm · Pull Request #1078 · python-control/python-control · GitHub

Open Graph Title: fix issue with multiplying MIMO LTI system by scalar by murrayrm · Pull Request #1078 · python-control/python-control

X Title: fix issue with multiplying MIMO LTI system by scalar by murrayrm · Pull Request #1078 · python-control/python-control

Description: This PR addresses #1075 and also fixes a small bug with constant FRD systems with small numbers of frequency points. Changes: Multiplying (*), adding (+), or subtracting (-) a constant from any (MIMO) LTI object now acts element-wise (same as ndarray's). This fixes a bug where multiplying a MIMO LTI system by a constant was multiplying by a matrix filled with the constant rather than a diagonal matrix (scaled identity). Specifying an FRD system with fewer than 4 frequency points was generating an error because the default settings try to set up a smooth (interpolating) response and the default degree of the fit was 3. The SciPy interpolation function requires k+1 data points for a degree k fit, so an exception was generated. Added unit tests that catch the bug in #1075 but also check across all LTI system representations (frd, ss, tf).

Open Graph Description: This PR addresses #1075 and also fixes a small bug with constant FRD systems with small numbers of frequency points. Changes: Multiplying (*), adding (+), or subtracting (-) a constant from any (M...

X Description: This PR addresses #1075 and also fixes a small bug with constant FRD systems with small numbers of frequency points. Changes: Multiplying (*), adding (+), or subtracting (-) a constant from any (M...

Opengraph URL: https://github.com/python-control/python-control/pull/1078

X: @github

direct link

Domain: github.com

route-pattern/:user_id/:repository/pull/:id/files(.:format)
route-controllerpull_requests
route-actionfiles
fetch-noncev2:f285b814-60e2-bc95-157b-ccaf28e45092
current-catalog-service-hashae870bc5e265a340912cde392f23dad3671a0a881730ffdadd82f2f57d81641b
request-idB15C:295F80:FC48F2:15C0482:697A8275
html-safe-nonced3bc1077fa2fcafd38c92241e8e6e0f3feeace650440d68685ba7d1396c88f4d
visitor-payloadeyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJCMTVDOjI5NUY4MDpGQzQ4RjI6MTVDMDQ4Mjo2OTdBODI3NSIsInZpc2l0b3JfaWQiOiI1ODcyMzg1NzUwNzA0MTM0MjkiLCJyZWdpb25fZWRnZSI6ImlhZCIsInJlZ2lvbl9yZW5kZXIiOiJpYWQifQ==
visitor-hmaca04b29b94903e3a2299177079dbf4c5caa75bbb8df619dca900339ed5aa05d03
hovercard-subject-tagpull_request:2221150605
github-keyboard-shortcutsrepository,pull-request-list,pull-request-conversation,pull-request-files-changed,copilot
google-site-verificationApib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-urlhttps://collector.github.com/github/collect
analytics-location///pull_requests/show/files
fb:app_id1401488693436528
apple-itunes-appapp-id=1477376905, app-argument=https://github.com/python-control/python-control/pull/1078/files
twitter:imagehttps://avatars.githubusercontent.com/u/293362?s=400&v=4
twitter:cardsummary_large_image
og:imagehttps://avatars.githubusercontent.com/u/293362?s=400&v=4
og:image:altThis PR addresses #1075 and also fixes a small bug with constant FRD systems with small numbers of frequency points. Changes: Multiplying (*), adding (+), or subtracting (-) a constant from any (M...
og:site_nameGitHub
og:typeobject
hostnamegithub.com
expected-hostnamegithub.com
Nonef6192227ebb08ae3d66e887f7363efea6f1ba29abe280990e1f6ad2d2962b6c8
turbo-cache-controlno-preview
diff-viewunified
go-importgithub.com/python-control/python-control git https://github.com/python-control/python-control.git
octolytics-dimension-user_id2285872
octolytics-dimension-user_loginpython-control
octolytics-dimension-repository_id22791752
octolytics-dimension-repository_nwopython-control/python-control
octolytics-dimension-repository_publictrue
octolytics-dimension-repository_is_forkfalse
octolytics-dimension-repository_network_root_id22791752
octolytics-dimension-repository_network_root_nwopython-control/python-control
turbo-body-classeslogged-out env-production page-responsive full-width
disable-turbotrue
browser-stats-urlhttps://api.github.com/_private/browser/stats
browser-errors-urlhttps://api.github.com/_private/browser/errors
release7f58967b50cdccb4b617fbacac94376e17eef59e
ui-targetfull
theme-color#1e2327
color-schemelight dark

Links:

Skip to contenthttps://github.com/python-control/python-control/pull/1078/files#start-of-content
https://github.com/
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython-control%2Fpython-control%2Fpull%2F1078%2Ffiles
GitHub CopilotWrite better code with AIhttps://github.com/features/copilot
GitHub SparkBuild and deploy intelligent appshttps://github.com/features/spark
GitHub ModelsManage and compare promptshttps://github.com/features/models
MCP RegistryNewIntegrate external toolshttps://github.com/mcp
ActionsAutomate any workflowhttps://github.com/features/actions
CodespacesInstant dev environmentshttps://github.com/features/codespaces
IssuesPlan and track workhttps://github.com/features/issues
Code ReviewManage code changeshttps://github.com/features/code-review
GitHub Advanced SecurityFind and fix vulnerabilitieshttps://github.com/security/advanced-security
Code securitySecure your code as you buildhttps://github.com/security/advanced-security/code-security
Secret protectionStop leaks before they starthttps://github.com/security/advanced-security/secret-protection
Why GitHubhttps://github.com/why-github
Documentationhttps://docs.github.com
Bloghttps://github.blog
Changeloghttps://github.blog/changelog
Marketplacehttps://github.com/marketplace
View all featureshttps://github.com/features
Enterpriseshttps://github.com/enterprise
Small and medium teamshttps://github.com/team
Startupshttps://github.com/enterprise/startups
Nonprofitshttps://github.com/solutions/industry/nonprofits
App Modernizationhttps://github.com/solutions/use-case/app-modernization
DevSecOpshttps://github.com/solutions/use-case/devsecops
DevOpshttps://github.com/solutions/use-case/devops
CI/CDhttps://github.com/solutions/use-case/ci-cd
View all use caseshttps://github.com/solutions/use-case
Healthcarehttps://github.com/solutions/industry/healthcare
Financial serviceshttps://github.com/solutions/industry/financial-services
Manufacturinghttps://github.com/solutions/industry/manufacturing
Governmenthttps://github.com/solutions/industry/government
View all industrieshttps://github.com/solutions/industry
View all solutionshttps://github.com/solutions
AIhttps://github.com/resources/articles?topic=ai
Software Developmenthttps://github.com/resources/articles?topic=software-development
DevOpshttps://github.com/resources/articles?topic=devops
Securityhttps://github.com/resources/articles?topic=security
View all topicshttps://github.com/resources/articles
Customer storieshttps://github.com/customer-stories
Events & webinarshttps://github.com/resources/events
Ebooks & reportshttps://github.com/resources/whitepapers
Business insightshttps://github.com/solutions/executive-insights
GitHub Skillshttps://skills.github.com
Documentationhttps://docs.github.com
Customer supporthttps://support.github.com
Community forumhttps://github.com/orgs/community/discussions
Trust centerhttps://github.com/trust-center
Partnershttps://github.com/partners
GitHub SponsorsFund open source developershttps://github.com/sponsors
Security Labhttps://securitylab.github.com
Maintainer Communityhttps://maintainers.github.com
Acceleratorhttps://github.com/accelerator
Archive Programhttps://archiveprogram.github.com
Topicshttps://github.com/topics
Trendinghttps://github.com/trending
Collectionshttps://github.com/collections
Enterprise platformAI-powered developer platformhttps://github.com/enterprise
GitHub Advanced SecurityEnterprise-grade security featureshttps://github.com/security/advanced-security
Copilot for BusinessEnterprise-grade AI featureshttps://github.com/features/copilot/copilot-business
Premium SupportEnterprise-grade 24/7 supporthttps://github.com/premium-support
Pricinghttps://github.com/pricing
Search syntax tipshttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
documentationhttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython-control%2Fpython-control%2Fpull%2F1078%2Ffiles
Sign up https://github.com/signup?ref_cta=Sign+up&ref_loc=header+logged+out&ref_page=%2F%3Cuser-name%3E%2F%3Crepo-name%3E%2Fpull_requests%2Fshow%2Ffiles&source=header-repo&source_repo=python-control%2Fpython-control
Reloadhttps://github.com/python-control/python-control/pull/1078/files
Reloadhttps://github.com/python-control/python-control/pull/1078/files
Reloadhttps://github.com/python-control/python-control/pull/1078/files
python-control https://github.com/python-control
python-controlhttps://github.com/python-control/python-control
Notifications https://github.com/login?return_to=%2Fpython-control%2Fpython-control
Fork 447 https://github.com/login?return_to=%2Fpython-control%2Fpython-control
Star 2k https://github.com/login?return_to=%2Fpython-control%2Fpython-control
Code https://github.com/python-control/python-control
Issues 87 https://github.com/python-control/python-control/issues
Pull requests 8 https://github.com/python-control/python-control/pulls
Discussions https://github.com/python-control/python-control/discussions
Actions https://github.com/python-control/python-control/actions
Projects 0 https://github.com/python-control/python-control/projects
Wiki https://github.com/python-control/python-control/wiki
Security 0 https://github.com/python-control/python-control/security
Insights https://github.com/python-control/python-control/pulse
Code https://github.com/python-control/python-control
Issues https://github.com/python-control/python-control/issues
Pull requests https://github.com/python-control/python-control/pulls
Discussions https://github.com/python-control/python-control/discussions
Actions https://github.com/python-control/python-control/actions
Projects https://github.com/python-control/python-control/projects
Wiki https://github.com/python-control/python-control/wiki
Security https://github.com/python-control/python-control/security
Insights https://github.com/python-control/python-control/pulse
Sign up for GitHub https://github.com/signup?return_to=%2Fpython-control%2Fpython-control%2Fissues%2Fnew%2Fchoose
terms of servicehttps://docs.github.com/terms
privacy statementhttps://docs.github.com/privacy
Sign inhttps://github.com/login?return_to=%2Fpython-control%2Fpython-control%2Fissues%2Fnew%2Fchoose
slivingstonhttps://github.com/slivingston
python-control:mainhttps://github.com/python-control/python-control/tree/main
murrayrm:fix_scalar_tfops-06Dec2024https://github.com/murrayrm/python-control/tree/fix_scalar_tfops-06Dec2024
Conversation 4 https://github.com/python-control/python-control/pull/1078
Commits 4 https://github.com/python-control/python-control/pull/1078/commits
Checks 13 https://github.com/python-control/python-control/pull/1078/checks
Files changed https://github.com/python-control/python-control/pull/1078/files
Please reload this pagehttps://github.com/python-control/python-control/pull/1078/files
fix issue with multiplying MIMO LTI system by scalar https://github.com/python-control/python-control/pull/1078/files#top
Show all changes 4 commits https://github.com/python-control/python-control/pull/1078/files
9acbfbb fix issue with multiplying MIMO LTI system by scalar murrayrm Dec 7, 2024 https://github.com/python-control/python-control/pull/1078/commits/9acbfbbbf3b4e2c9e8453c0cc18d21df88d6230b
0b9be7a fix misprint slivingston Dec 11, 2024 https://github.com/python-control/python-control/pull/1078/commits/0b9be7a845fc6fcc62dd667d4c2d932debe363db
f514f7c fix misprint slivingston Dec 11, 2024 https://github.com/python-control/python-control/pull/1078/commits/f514f7c0064f214aa1be0917086f01833f6af490
3165881 fix misprint slivingston Dec 11, 2024 https://github.com/python-control/python-control/pull/1078/commits/3165881f23f917a9ed1c211b4b3f1497ac0e8c0d
Clear filters https://github.com/python-control/python-control/pull/1078/files
Please reload this pagehttps://github.com/python-control/python-control/pull/1078/files
Please reload this pagehttps://github.com/python-control/python-control/pull/1078/files
frdata.py https://github.com/python-control/python-control/pull/1078/files#diff-cacf59417131c19becd6fba4dde9e979bed49ce572eb24f0f62bd2af460d83d1
lti_test.py https://github.com/python-control/python-control/pull/1078/files#diff-485af8392823eae5427ee85989fd5a2da1379077477709269159b5b28336abd1
xferfcn.py https://github.com/python-control/python-control/pull/1078/files#diff-0dd9424d3024fc1d5cc8fd67d13efe5703318c4c705526ab0ae216de69ce3de7
control/frdata.pyhttps://github.com/python-control/python-control/pull/1078/files#diff-cacf59417131c19becd6fba4dde9e979bed49ce572eb24f0f62bd2af460d83d1
View file https://github.com/murrayrm/python-control/blob/3165881f23f917a9ed1c211b4b3f1497ac0e8c0d/control/frdata.py
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python-control/python-control/pull/1078/{{ revealButtonHref }}
https://github.com/python-control/python-control/pull/1078/files#diff-cacf59417131c19becd6fba4dde9e979bed49ce572eb24f0f62bd2af460d83d1
https://github.com/python-control/python-control/pull/1078/files#diff-cacf59417131c19becd6fba4dde9e979bed49ce572eb24f0f62bd2af460d83d1
https://github.com/python-control/python-control/pull/1078/files#diff-cacf59417131c19becd6fba4dde9e979bed49ce572eb24f0f62bd2af460d83d1
https://github.com/python-control/python-control/pull/1078/files#diff-cacf59417131c19becd6fba4dde9e979bed49ce572eb24f0f62bd2af460d83d1
control/tests/lti_test.pyhttps://github.com/python-control/python-control/pull/1078/files#diff-485af8392823eae5427ee85989fd5a2da1379077477709269159b5b28336abd1
View file https://github.com/murrayrm/python-control/blob/3165881f23f917a9ed1c211b4b3f1497ac0e8c0d/control/tests/lti_test.py
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python-control/python-control/pull/1078/{{ revealButtonHref }}
https://github.com/python-control/python-control/pull/1078/files#diff-485af8392823eae5427ee85989fd5a2da1379077477709269159b5b28336abd1
control/xferfcn.pyhttps://github.com/python-control/python-control/pull/1078/files#diff-0dd9424d3024fc1d5cc8fd67d13efe5703318c4c705526ab0ae216de69ce3de7
View file https://github.com/murrayrm/python-control/blob/3165881f23f917a9ed1c211b4b3f1497ac0e8c0d/control/xferfcn.py
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python-control/python-control/pull/1078/{{ revealButtonHref }}
https://github.com/python-control/python-control/pull/1078/files#diff-0dd9424d3024fc1d5cc8fd67d13efe5703318c4c705526ab0ae216de69ce3de7
https://github.com/python-control/python-control/pull/1078/files#diff-0dd9424d3024fc1d5cc8fd67d13efe5703318c4c705526ab0ae216de69ce3de7
https://github.com/python-control/python-control/pull/1078/files#diff-0dd9424d3024fc1d5cc8fd67d13efe5703318c4c705526ab0ae216de69ce3de7
https://github.com/python-control/python-control/pull/1078/files#diff-0dd9424d3024fc1d5cc8fd67d13efe5703318c4c705526ab0ae216de69ce3de7
https://github.com/python-control/python-control/pull/1078/files#diff-0dd9424d3024fc1d5cc8fd67d13efe5703318c4c705526ab0ae216de69ce3de7
https://github.com/python-control/python-control/pull/1078/files#diff-0dd9424d3024fc1d5cc8fd67d13efe5703318c4c705526ab0ae216de69ce3de7
Please reload this pagehttps://github.com/python-control/python-control/pull/1078/files
https://github.com
Termshttps://docs.github.com/site-policy/github-terms/github-terms-of-service
Privacyhttps://docs.github.com/site-policy/privacy-policies/github-privacy-statement
Securityhttps://github.com/security
Statushttps://www.githubstatus.com/
Communityhttps://github.community/
Docshttps://docs.github.com/
Contacthttps://support.github.com?tags=dotcom-footer

Viewport: width=device-width

URLs of crawlers that visited me.