From 6e7553ffe09ed214e1aac362c16b526743e3c25b Mon Sep 17 00:00:00 2001
From: Ricardo Wurmus <rekado@elephly.net>
Date: Thu, 15 Aug 2019 17:02:30 +0200
Subject: gnu: Add r-rann-l1.

* gnu/packages/cran.scm (r-rann-l1): New variable.
---
 gnu/packages/cran.scm | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'gnu/packages')

diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index 17c85fe512..adac3fe0c5 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -14945,3 +14945,26 @@ path of values for the regularization parameter.")
 library uses.  It is also possible to control the number of threads in
 OpenMP.")
     (license license:agpl3+)))
+
+(define-public r-rann-l1
+  (package
+    (name "r-rann-l1")
+    (version "2.5.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "RANN.L1" version))
+       (sha256
+        (base32
+         "1hanh3my84mdr5wy6b89fawqzfc184vff1y65wy4l5ld9qza1n44"))))
+    (properties `((upstream-name . "RANN.L1")))
+    (build-system r-build-system)
+    (home-page "https://github.com/jefferis/RANN/tree/master-L1")
+    (synopsis "Fast nearest neighbour search using L1 metric")
+    (description
+     "This package provides tools to find the k nearest neighbours for every
+point in a given dataset in O(N log N) time using Arya and Mount's ANN
+library.  There is support for approximate as well as exact searches, fixed
+radius searches and @code{bd} as well as @code{kd} trees.  The distance is
+computed using the L1 (Manhattan, taxicab) metric.")
+    (license license:gpl3+)))
-- 
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