I improved the patch by removing r-lattice because that is not needed,
and I made a complete sentence in the description.
Here it is:
>From aedf6029283733a19941de2d2b641f87790189d3 Mon Sep 17 00:00:00 2001
From: Roel Janssen <r...@gnu.org>
Date: Wed, 4 May 2016 15:39:18 +0200
Subject: [PATCH] gnu: Add r-coda.
* gnu/packages/statistics.scm (r-coda): New variable.
---
gnu/packages/statistics.scm | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
index 3d0faf7..409b42f 100644
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -4,6 +4,7 @@
;;; Copyright © 2016 Andreas Enge <andr...@enge.fr>
;;; Copyright © 2016 Efraim Flashner <efr...@flashner.co.il>
;;; Copyright © 2016 Pjotr Prins <pjotr.g...@thebird.nl>
+;;; Copyright © 2016 Roel Janssen <r...@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -1239,6 +1240,25 @@ inference for statistical models.")
`(("python2-setuptools" ,python2-setuptools)
,@(package-native-inputs stats))))))
+(define-public r-coda
+ (package
+ (name "r-coda")
+ (version "0.18-1")
+ (source (origin
+ (method url-fetch)
+ (uri (cran-uri "coda" version))
+ (sha256
+ (base32
+ "03sc780734zj2kqcm8lkyvf76fql0jbfhkblpn8l58zmb6cqi958"))))
+ (build-system r-build-system)
+ (home-page "http://cran.r-project.org/web/packages/coda";)
+ (synopsis "This is a package for Output Analysis and Diagnostics for MCMC")
+ (description "This package provides functions for summarizing and plotting
+the output from Markov Chain Monte Carlo (MCMC) simulations, as well as
+diagnostic tests of convergence to the equilibrium distribution of the Markov
+chain.")
+ (license license:gpl2+)))
+
(define-public r-xml2
(package
(name "r-xml2")
--
2.7.4
