v0.12.0

ControlSystems v0.12.0

Diff since v0.11.12

• Breaking: Plots.jl is no longer loaded by ControlSystems.jl. This improves loading times for the package, but means that users will have to run using Plots manually before plotting functions are available.
• Deprecations: Functions dare/dlyap/dkalman/dlqr are now deprecated in favor of an interface that uses dispatch on the types Continuous / Discrete. Example: dare(A,B,Q,R) is now are(Discrete,A,B,Q,R) or are(sysd,Q,R).

Closed issues:

• Error using dare function (#249)
• Conversion problem for ss(1,1,1,0)/3 (#299)
• norm, covar, dlyap cannot handle systems of dimension > 150 (#300)
• Unity feedback of discrete-time system (#304)
• StateSpace with all SparseArrays converts to dense on creation (#311)
• Discussion of frequency responses (#321)
• marginplot is a function (#340)
• Add constructors with nu, ny, nx for easy rebuilding (#399)
• Stable system with unstable step response (#419)
• isapprox for SisoRational broken (#547)
• rlocus issues (#606)
• Rlocusplot with zero excess (#611)
• Remove prescale? (#614)

Merged pull requests:

• No Plots.jl (#235) (@mfalt)
• Fixed missing tic in docstring (#608) (@jonniedie)
• export balance_statespace (#609) (@baggepinnen)
• improve rlocusplot (#612) (@baggepinnen)
• add api page that everything that is exported (#613) (@baggepinnen)
• Fix discrete ss to zpk conversion (#615) (@albheim)
• rm duplicate docstrings due to Documenter limitation (#616) (@baggepinnen)
• Fix some test warnings (#617) (@albheim)
• hinfnorm: early exit for cases where norm is 0 (#618) (@baggepinnen)
• special transform if matrix is unitary (#619) (@baggepinnen)
• remove prescale (#620) (@baggepinnen)
• add test for unitary similarity trasnform (#621) (@baggepinnen)
• Fix some problems for comparisons between tfs (#622) (@albheim)
• balance tf -> ss by default (#623) (@baggepinnen)
• remove ny,nu fields from TransferFunction (#624) (@baggepinnen)
• fix type errors in ss (#625) (@baggepinnen)
• Add tests for discrete feedback (#626) (@baggepinnen)
• use "built-in" blockdiag (#627) (@baggepinnen)
• wider signature in lsim(tf) (#628) (@baggepinnen)
• use timeevol types to dispatch matrix equations (#629) (@baggepinnen)
• make numbers and matrices work as systems in freqresp and friends (#630) (@baggepinnen)
• improve sigmaplot label handling (#631) (@baggepinnen)
• Fix occasional problems with solve not including endpoint (#632) (@baggepinnen)
• document SimResult and its plot (#633) (@baggepinnen)
• update readme before release (#634) (@baggepinnen)

v0.11.12

ControlSystems v0.11.12

Diff since v0.11.11

Merged pull requests:

• fix capitalization in plot recipe type (#600) (@baggepinnen)
• Remove libgtk install (#601) (@baggepinnen)
• fix returned transformation matrix (#602) (@baggepinnen)

v0.11.11

ControlSystems v0.11.11

Diff since v0.11.10

Closed issues:

• Abstract LTI system types should be parameterized by TimeEvol (#367)
• Better integration with MonteCarloMeasurements (#378)
• Generality in synthesis.jl (#458)
• Inconsistencies in lft/feedback/starprod (#505)

Merged pull requests:

• LTISystem parameterized by time evolution (#597) (@baggepinnen)
• (actually) use hessenberg factorization for statespace freqresp (#598) (@baggepinnen)
• fallback freqresp for matrices without hessenberg (#599) (@baggepinnen)

v0.11.10

ControlSystems v0.11.10

Diff since v0.11.9

Merged pull requests:

• Add headings for ploting examples (#593) (@ErikQQY)
• allow plotting of vectors of simresults (#594) (@baggepinnen)
• improve numerical stability in matrix comps (#595) (@baggepinnen)

v0.11.9

ControlSystems v0.11.9

Diff since v0.11.8

Merged pull requests:

• more robust inversion (#590) (@baggepinnen)
• CompatHelper: bump compat for "MatrixEquations" to "2.1" (#591) (@github-actions[bot])
• fix for discrete systems in baltrunc (#592) (@baggepinnen)

v0.11.8

ControlSystems v0.11.8

Diff since v0.11.7

Closed issues:

• The status of balreal, baltrunc and other functions related to model order reduction (#213)
• Problems with baltrunc (#479)

Merged pull requests:

• use MatrixEquations.jl (#494) (@baggepinnen)
• use ME for gram (#588) (@baggepinnen)
• Fix baltrunc (#589) (@baggepinnen)

v0.11.7

ControlSystems v0.11.7

Diff since v0.11.6

Merged pull requests:

• type fixes in SisoRational (#587) (@baggepinnen)

v0.11.6

ControlSystems v0.11.6

Diff since v0.11.5

Merged pull requests:

• accept symbolics in tf (#585) (@baggepinnen)
• broadcast multiplication with tfs (#586) (@baggepinnen)

v0.11.5

ControlSystems v0.11.5

Diff since v0.11.4

Merged pull requests:

• usability improvements for multiplication with scalars (#581) (@baggepinnen)
• move plot kwargs to a place where they'll have effect (#582) (@baggepinnen)

v0.11.4

ControlSystems v0.11.4

Diff since v0.11.3

Merged pull requests:

• CompatHelper: bump compat for "OrdinaryDiffEq" to "6.0" (#580) (@github-actions[bot])