diff --git a/src/diskarrayresults.jl b/src/diskarrayresults.jl
index a39a677..537764a 100644
--- a/src/diskarrayresults.jl
+++ b/src/diskarrayresults.jl
@@ -69,4 +69,9 @@ end
 end
 function compute(a::DiskArrayEngine.GMWOPResult;runner=LocalRunner,threaded=true,kwargs...)
     compute!(nothing,a;runner,threaded,kwargs...)
+end
+
+function Base.show(io::IO,::MIME"text/plain",z::GMWOPResult)
+    println(io, "GMWOPResult of size $(size(z))")
+    println("Inputs:")
 end
\ No newline at end of file
diff --git a/src/mwops.jl b/src/mwops.jl
index 3d7037c..657dd2e 100644
--- a/src/mwops.jl
+++ b/src/mwops.jl
@@ -28,11 +28,16 @@ function Base.show(io::IO,::MIME"text/plain",lw::LoopWindows)
     print(io,"$li: Window of length $(length(w)) [")
     showifthere(io,w,1,sep=false)
     showifthere(io,w,2)
-    print(io," ... ")
-    showifthere(io,w,max(length(w)-1,3),sep=false)
+    if length(w) > 4 
+      print(io," ... ")
+    elseif length(w) > 2
+      print(io, ", ")
+    end
+    showifthere(io,w,max(length(w)-1,3), sep=false)
     showifthere(io,w,max(length(w),4))
     
   end
+  print(io, "]")
 end
 function showifthere(io,w,i;sep=true)
   if length(w)>=i
diff --git a/src/util/aggregate.jl b/src/util/aggregate.jl
index aa58e76..b69e588 100644
--- a/src/util/aggregate.jl
+++ b/src/util/aggregate.jl
@@ -72,6 +72,17 @@ function gmwop_for_aggregator(agg,dimspec,inar;ismem=false,outchunks=nothing)
     return GMDWop(tuple(inars),tuple(outspecs),agg.f)
 end
 
+# Todo Move function to first argument to enable do-blocks
+"""
+    aggregate_diskarray(a, f, dimspec; skipmissing=false, strategy=:auto,outchunks=nothing)
+
+Aggregate a DiskArray `a` with the aggregation function f.
+
+Certain functions are special cased and will use OnlineStats if possible to speed up the computation.
+This will never happen if you use a do-block.
+```julia
+    aggregate_diskarray(a,mean,(2=>nothing,3=>4,4=>[1,1,1,2,2,2,3,3,3,4,4,4,4,4,5,5,5]))
+"""    
 function aggregate_diskarray(a, f, dimspec; skipmissing=false, strategy=:auto,outchunks=nothing)
     
     hasmissings = Missing <: eltype(a)
@@ -101,7 +112,7 @@ function aggregate_diskarray(a, f, dimspec; skipmissing=false, strategy=:auto,ou
         p2 = optimize_loopranges(op2,5e8)
         c1 = actual_io_costs(p1)
         c2 = actual_io_costs(p2)
-        #we still prefer direct aggregatoin, so we giv it a slight lead:
+        #we still prefer direct aggregation, so we give it a slight lead:
         op = c1*0.9 < c2 ? op1 : op2
         results_as_diskarrays(op)[1]
     else
diff --git a/src/util/interpolate.jl b/src/util/interpolate.jl
index 5065cad..753257a 100644
--- a/src/util/interpolate.jl
+++ b/src/util/interpolate.jl
@@ -1,9 +1,10 @@
 using Interpolations: BSpline, Linear, NoInterp, extrapolate, interpolate, Flat
 export interpolate_diskarray, interpolate_diskarray!
-
+#=
 function getinterpinds(oldvals::AbstractRange, newvals::AbstractRange)
     (newvals.-first(oldvals))./step(oldvals).+1
 end
+=#
 function getinterpinds(r1,r2)
     rev = issorted(r1) ? false : issorted(r1,rev=true) ? true : error("Axis values are not sorted")
     map(r2) do ir
diff --git a/test/Project.toml b/test/Project.toml
index b77b8f4..0c8d77a 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -3,5 +3,6 @@ Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"
 DiskArrays = "3c3547ce-8d99-4f5e-a174-61eb10b00ae3"
 Distributed = "8ba89e20-285c-5b6f-9357-94700520ee1b"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
+Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 Zarr = "0a941bbe-ad1d-11e8-39d9-ab76183a1d99"
diff --git a/test/runtests.jl b/test/runtests.jl
index 84b2b26..8556bfc 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -9,3 +9,4 @@ include("test_distribute.jl")
 include("test_restart.jl")
 include("test_graph.jl")
 include("test_mergeops.jl")
+include("test_interpolation.jl")
\ No newline at end of file
diff --git a/test/test_interpolation.jl b/test/test_interpolation.jl
index e69de29..e6f60c2 100644
--- a/test/test_interpolation.jl
+++ b/test/test_interpolation.jl
@@ -0,0 +1,43 @@
+@testset "Interpolation" begin
+    a = [i+j for i in 1:5, j in 1:7, k=1:6]
+    #source coordinates
+    x = 2.0:2.0:10.0
+    y = 2.0:2.0:14.0
+    #target coordinates
+    xedge = 2.0:1.0:10.0
+    youter = -5:1.0:19.
+    redge = interpolate_diskarray(a,(1=>(x,xedge),))
+    #compute(r)
+    @test redge[2,1,1] == 2.5
+    @test size(redge) == (9,7, 6)
+    rout = interpolate_diskarray(a,(2=>(y,youter),))
+    @test size(rout) == (5,25, 6)
+    @test rout[1,1,1] == a[1,1,1]
+    r = interpolate_diskarray(a, (1=>(x, xedge), 2=>(y, youter)))
+    @test compute(r)[2,1,1] == 2.5
+    @test compute(r)[2,2,1] == 2.5
+    @test r[1,13,1] == 4.5
+end
+
+@testset "Aggregate" begin
+    using Statistics
+    a = [i+j+k for i in 1:4, j in 1:5, k in 1:6]
+    agg_mean = aggregate_diskarray(a, mean, (1=>nothing,))
+    @test size(agg_mean) == (1,5,6)
+    @test agg_mean[:,:,:] == mean(a, dims=1)
+    agg_max = aggregate_diskarray(a, maximum, (2=>nothing,), strategy=:reduce)
+    # This gives all ones for some reason
+    @test_broken agg_max[:,:,:] == maximum(a, dims=2)
+    agg_sec = aggregate_diskarray(a, mean, (2=>2,))
+    # This should work but currently throws a bounds error
+    @test_throws BoundsError agg_sec[:,:,:]
+    agg_minimum = aggregate_diskarray(a, minimum, (3=>3,), strategy=:reduce)
+    @test agg_minimum[:,:,1] == minimum(a, dims=3)[:,:]
+    @test agg_minimum[:,:,2] == minimum(a, dims=3)[:,:] .+ 3
+    @test_broken eltype(agg_minimum) == Int
+    agg_minimum_direct = aggregate_diskarray(a, minimum, (3=>3,), strategy=:reduce)
+    @test agg_minimum_direct[:,:,1] == minimum(a, dims=3)[:,:]
+    @test agg_minimum_direct[:,:,2] == minimum(a, dims=3)[:,:] .+ 3
+    @test_broken eltype(agg_minimum_direct) == Int
+    # Why is the element type of minimum of an Int array Union{Missing, Float64}?
+end
\ No newline at end of file