branch master updated: gnu: Add r-data-tree.

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The following commit(s) were added to refs/heads/master by this push:
     new 6f1b958  gnu: Add r-data-tree.
6f1b958 is described below

commit 6f1b958e1a9c9a148172715ccbed304077b6d2d7
Author: Ricardo Wurmus <rekado@elephly.net>
AuthorDate: Thu Feb 4 21:22:59 2021 +0100

    gnu: Add r-data-tree.
    
    * gnu/packages/cran.scm (r-data-tree): New variable.
---
 gnu/packages/cran.scm | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index 3471467..e650c56 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -6664,6 +6664,33 @@ data-frames, visualize the graph on a web browser 
through gexf-js (a
 JavaScript library) and interact with the igraph package.")
     (license license:expat)))
 
+(define-public r-data-tree
+  (package
+    (name "r-data-tree")
+    (version "1.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "data.tree" version))
+       (sha256
+        (base32
+         "0pizmx2312zsym4m42b97q2184bg3hibvbdrblcga05xln84qrs0"))))
+    (properties `((upstream-name . "data.tree")))
+    (build-system r-build-system)
+    (propagated-inputs
+     `(("r-r6" ,r-r6)
+       ("r-stringi" ,r-stringi)))
+    (native-inputs
+     `(("r-knitr" ,r-knitr)))
+    (home-page "http://github.com/gluc/data.tree";)
+    (synopsis "General purpose hierarchical data structure")
+    (description
+     "Create tree structures from hierarchical data, and traverse the tree in
+various orders.  Aggregate, cumulate, print, plot, convert to and from
+data.frame and more.  This is useful for decision trees, machine learning,
+finance, conversion from and to JSON, and many other applications.")
+    (license license:gpl2+)))
+
 (define-public r-rappdirs
   (package
     (name "r-rappdirs")