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rimageheightwidth

R determine image width and height in pixels

Suppose I have an image on disk, image.jpg. How can I determine image width in pixels using R?

Solution

  • You can use the jpeg package. Code should be pretty self-explanatory:

    require(jpeg)
img <- readJPEG("myimage.jpg") 

dim(img)
[1] 700 700   3

    The same author (Simon Urbanek) also provided the png and tiff package, that have functions with similar syntax (readPNG and readTIFF)