Lesson 8/11 and fixed spelling error in prev lesson

11-8/interactiverec.jl

@@ -0,0 +1,31 @@
+using LinearAlgebra, Plots, Statistics
+
+include("../11-3/readyalefaces_to_tensor.jl")
+function interactiverec(F, iterstop::Union{Nothing, Integer}=nothing)
+    # given a 243x320 image F, displays it as sum of components
+    stdsize = (243, 320)
+    
+    (X, _) = readyalefaces_to_tensor()
+
+    X = reshape(X, (prod(stdsize), Integer(prod(size(X)) / prod(stdsize))))
+
+    avg = mean(X, dims=2)
+    Xs = X .- avg
+    (U,S,V) = svd(X)
+
+    h = Plots.heatmap(reshape(avg, stdsize), yflip=true)
+    display(h)
+
+    if iterstop == nothing
+        upto = size(U, 2)
+    else
+        upto = min(size(U, 2), iterstop)
+    end
+
+    # no fancy slider, not enough time
+    for d ∈ 0:upto
+        h = heatmap(reshape(avg .+ U[:, 1:d] * U[:, 1:d]' * F, stdsize), yflip=true)
+        IJulia.clear_output(true)
+        display(h)
+    end
+end