using NPZ, PlotlyJS

function displayArray3(arr:: Array{UInt8, 3})
      Plot(image(z=permutedims(arr, (1, 3, 2)), 
                 colormodel= size(arr, 1) == 3 ? "rgb" : size(arr, 1) ==4 ? 
                            "rgba" : error("the array should be of size (d, rows, cols), d=3, 4")))
end   

arr3c = npzread("images/arr3channels.npy")
println("the type of array is $(typeof(arr3c))"*" and size: $(size(arr3c))")
pl=displayArray3(arr3c)

arr4c = npzread("images/arr4channels.npy")
println("the type of array is $(typeof(arr4c))"*" and size: $(size(arr4c))")
pl=displayArray3(arr4c)
relayout!(pl, xaxis_visible=false, yaxis_visible=false)
display(pl)

using Images
img1=load("images/sun-flower.jpg")

img2 =load("images/circular-image.png")

img = load("images/camera.png");#https://github.com/scikit-image/scikit-image/blob/main/skimage/data/camera.png
typeof(img), size(img)

pl = Plot(heatmap(z=reinterpret(UInt8, img), colorscale=colors.grays1, showscale=false), 
          Layout(width=500, height=500, yaxis_autorange="reversed"))