07/14: gnu: Add r-pwr.

[Ricardo Wurmus]

rekado pushed a commit to branch master
in repository guix.

commit 63fcb88a502054b38cca0e7c4db83529800282f7
Author: Ricardo Wurmus <address@hidden>
Date:   Thu Oct 25 05:15:56 2018 +0200

    gnu: Add r-pwr.
    
    * gnu/packages/cran.scm (r-pwr): New variable.
---
 gnu/packages/cran.scm | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index b89a477..1510d0e 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -6377,3 +6377,24 @@ be used to compute contrasts or linear functions of 
EMMs, trends, and
 comparisons of slopes.")
     ;; Either version of the license.
     (license (list license:gpl2 license:gpl3))))
+
+(define-public r-pwr
+  (package
+    (name "r-pwr")
+    (version "1.2-2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "pwr" version))
+       (sha256
+        (base32
+         "0r5g781lr677vp3zyhgmi7r68c87l8gd05l1s3ffnxgn5wf043sm"))))
+    (build-system r-build-system)
+    (native-inputs
+     `(("r-knitr" ,r-knitr)))
+    (home-page "https://github.com/heliosdrm/pwr";)
+    (synopsis "Basic functions for power analysis")
+    (description
+     "This package provides power analysis functions along the lines of
+Cohen (1988).")
+    (license license:gpl3+)))