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### 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")
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