gnu: Add r-fnn.

* gnu/packages/statistics.scm (r-fnn): New variable.

Signed-off-by: Ben Woodcroft <donttrustben@gmail.com>

gnu/packages/statistics.scm

@@ -4421,3 +4421,24 @@ VGLMs can be loosely thought of as multivariate generalised linear models.")
 functions apply.  The implementation can easily be added to functions where
 showing the progress is useful e.g. bootstrap.")
     (license license:gpl2)))
+
+(define-public r-fnn
+  (package
+    (name "r-fnn")
+    (version "1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "FNN" version))
+       (sha256
+        (base32
+         "1kncmiaraq1mrykb9fj3fsxswabk3l71fnp1vks0x9aay5xfk8mj"))))
+    (properties `((upstream-name . "FNN")))
+    (build-system r-build-system)
+    (home-page "http://cran.r-project.org/web/packages/FNN")
+    (synopsis "Fast nearest neighbor search algorithms and applications")
+    (description
+     "This package provides cover-tree and kd-tree fast k-nearest neighbor
+search algorithms and related applications including KNN classification,
+regression and information measures.")
+    (license license:gpl2+)))