gnu: Add r-imager.

* gnu/packages/cran.scm (r-imager): New variable.

gnu/packages/cran.scm

@@ -18232,3 +18232,45 @@ (define-public r-readbitmap
 TIFF format bitmap images.  Identification defaults to the use of the magic
 number embedded in the file rather than the file extension.")
     (license license:gpl2+)))
+
+(define-public r-imager
+  (package
+    (name "r-imager")
+    (version "0.41.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "imager" version))
+       (sha256
+        (base32
+         "19fqgjhg04garbipx20g72h9dd6k0jj4ac48nby6km4h665vrs4v"))))
+    (properties `((upstream-name . "imager")))
+    (build-system r-build-system)
+    (inputs
+     `(("fftw" ,fftw)
+       ("libtiff" ,libtiff)
+       ("libx11" ,libx11)
+       ("zlib" ,zlib)))
+    (propagated-inputs
+     `(("r-cairo" ,r-cairo)
+       ("r-downloader" ,r-downloader)
+       ("r-igraph" ,r-igraph)
+       ("r-jpeg" ,r-jpeg)
+       ("r-magrittr" ,r-magrittr)
+       ("r-plyr" ,r-plyr)
+       ("r-png" ,r-png)
+       ("r-purrr" ,r-purrr)
+       ("r-rcpp" ,r-rcpp)
+       ("r-readbitmap" ,r-readbitmap)
+       ("r-stringr" ,r-stringr)))
+    (native-inputs `(("pkg-config" ,pkg-config)))
+    (home-page "http://dahtah.github.io/imager")
+    (synopsis "Image processing library")
+    (description
+     "This is a package for fast image processing for images in up to 4
+dimensions (two spatial dimensions, one time/depth dimension, one color
+dimension).  It provides most traditional image processing tools (filtering,
+morphology, transformations, etc.) as well as various functions for easily
+analyzing image data using R.  The package wraps @url{http://cimg.eu, CImg}, a
+simple, modern C++ library for image processing.")
+    (license license:lgpl3)))