plotting for MappedBasis (#104)

* Update plotting.jl

* Update runtests.jl

Author: dlfivefifty

src/plotting.jl

@@ -11,6 +11,7 @@ end
 _plotgrid(_, P) = grid(P)
 
 _plotgrid(::WeightedBasisLayouts, wP) = plotgrid(unweightedbasis(wP))
+_plotgrid(::MappedBasisLayout, P) = invmap(parentindices(P)[1])[plotgrid(demap(P))]
 
 plotgrid(g) = _plotgrid(MemoryLayout(g), g)
 

test/runtests.jl

@@ -634,5 +634,7 @@ include("test_basisconcat.jl")
         @test wrep[1].args == (grid(wT), v[grid(wT)])
 
         @test plotgrid(v) == plotgrid(u) == grid(T) == grid(wT) == _plotgrid(MemoryLayout(v), v) == _plotgrid(MemoryLayout(u), u)
+        y = affine(0..1, x)
+        @test plotgrid(T[y,:]) == (plotgrid(T) .+ 1)/2
     end
 end