Merge pull request #91 from JuliaControl/balance_named

add method `balance_statespace(::NamedStateSpace)`

.github/workflows/CI.yml

@@ -10,7 +10,7 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.6'
+          - '1.7'
         os:
           - ubuntu-latest
         arch:

.github/workflows/docs.yml

@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: julia-actions/setup-julia@latest
         with:
-          version: '1.7'
+          version: '1.9'
       - name: Install dependencies
         run: julia --project=docs/ -e 'using Pkg; Pkg.develop(PackageSpec(path=pwd())); Pkg.instantiate()'
       - name: Build and deploy

Project.toml

@@ -36,7 +36,7 @@ Optim = "1.5"
 Plots = "1"
 RecipesBase = "1"
 UnPack = "1.0"
-julia = "1.6"
+julia = "1.7"
 
 [extras]
 FiniteDiff = "6a86dc24-6348-571c-b903-95158fe2bd41"

src/named_systems2.jl

@@ -181,6 +181,8 @@ function named_ss(sys::AbstractStateSpace, name;
     named_ss(sys; x, y, u, name=string(name))
 end
 
+named_ss(G::LTISystem, args...; kwargs...) = named_ss(ss(G), args...; kwargs...)
+
 ControlSystemsBase.ss(sys::NamedStateSpace) = ss(sys.sys)
 
 iterable(s::Symbol) = [s]
@@ -717,7 +719,7 @@ function CS.minreal(sys::NamedStateSpace, args...; kwargs...)
     named_ss(msys; sys.u, sys.y, sys.name)
 end
 
-for fun in [:baltrunc, :balreal]
+for fun in [:baltrunc, :balreal, :balance_statespace]
     @eval function CS.$(fun)(sys::NamedStateSpace, args...; kwargs...)
         msys, rest... = CS.$(fun)(sys.sys, args...; kwargs...)
         named_ss(msys; sys.u, sys.y, sys.name), rest...

test/test_named_systems2.jl

@@ -300,3 +300,7 @@ end
 G1 = ssrand(4,2,2)
 s1 = named_ss(G1, u = :u, y=[:y1, :y2, :w, :za]) 
 @test s1[[:y, :z], :] == s1[[1,2,4], :]
+
+## Test conversion of tf
+nss = named_ss(tf(1, [1,1]))
+@test nss isa NamedStateSpace