gnu: Add r-flexmix.

* gnu/packages/statistics.scm (r-flexmix): New variable.

Signed-off-by: Ben Woodcroft <donttrustben@gmail.com>

gnu/packages/statistics.scm

@@ -4209,3 +4209,27 @@ original public code has been corrected.")
 models.  The functionality is experimental and the user interface is likely
 to change in the future.")
     (license license:gpl2)))
+
+(define-public r-flexmix
+  (package
+    (name "r-flexmix")
+    (version "2.3-13")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "flexmix" version))
+       (sha256
+        (base32
+         "1i205yw3kkxs27gqcs6zx0c2mh16p332a2p06wq6fdzb20bazg3z"))))
+    (build-system r-build-system)
+    (propagated-inputs
+     `(("r-modeltools" ,r-modeltools)))
+    (home-page "http://cran.r-project.org/web/packages/flexmix")
+    (synopsis "Flexible mixture modeling")
+    (description
+     "This package implements a general framework for finite mixtures of
+regression models using the EM algorithm.  FlexMix provides the E-step and
+all data handling, while the M-step can be supplied by the user to easily
+define new models.  Existing drivers implement mixtures of standard linear
+models, generalized linear models and model-based clustering.")
+    (license license:gpl2+)))