### Julia image manipulation

Pkg.update()
Pkg.add("Images")
Pkg.add("ImageView")

using ImageView, Images
img = imread("my_photo.jpg")
# eg, rotate via a matrix transform
img.data = img.data'
display(img, pixelspacing = [1,1])

### Julia .mat loating

Pkg.update()
Pkg.add("MAT")
using MAT
file = matopen("matfile.mat")
read(file, "varname")
close(file)

file = matopen("matfile.mat", "w")
write(file, "varname", variable)
close(file)

vars = matread("matfile.mat")