10/16: gnu: Add r-dtw.

[Ricardo Wurmus]

rekado pushed a commit to branch master
in repository guix.

commit bf025ff6f2b922fd7a8c4205812842354c2cffae
Author: Ricardo Wurmus <address@hidden>
Date:   Mon Dec 18 11:58:48 2017 +0100

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

diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index 24076c5..e97069b 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -1662,3 +1662,26 @@ Analysis} (ICA) using various algorithms: FastICA,
 Information-Maximization (Infomax), and @dfn{Joint Approximate Diagonalization
 of Eigenmatrices} (JADE).")
     (license license:gpl2+)))
+
+(define-public r-dtw
+  (package
+    (name "r-dtw")
+    (version "1.18-1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "dtw" version))
+       (sha256
+        (base32
+         "1b91vahba09cqlb8b1ry4dlv4rbldb4s2p6w52gmyw31vxdv5nnr"))))
+    (build-system r-build-system)
+    (propagated-inputs `(("r-proxy" ,r-proxy)))
+    (home-page "http://dtw.r-forge.r-project.org/";)
+    (synopsis "Dynamic Time Warping Algorithms")
+    (description "This package provides a comprehensive implementation of
address@hidden time warping} (DTW) algorithms in R.  DTW computes the
+optimal (least cumulative distance) alignment between points of two time
+series.  Common DTW variants covered include local (slope) and global (window)
+constraints, subsequence matches, arbitrary distance definitions,
+normalizations, minimum variance matching, and so on.")
+    (license license:gpl2+)))