gnu: Add r-naniar.

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

gnu/packages/statistics.scm

@@ -6244,3 +6244,41 @@ (define-public r-norm
 normal model.")
     ;; Custom license, see https://cran.r-project.org/web/packages/norm/LICENSE.
     (license (license:non-copyleft "file://LICENSE"))))
+
+(define-public r-naniar
+  (package
+    (name "r-naniar")
+    (version "0.6.1")
+    (source (origin
+              (method url-fetch)
+              (uri (cran-uri "naniar" version))
+              (sha256
+               (base32
+                "0l3l2x85v3srilww483kpgp4zlwixyml257b0cqly8kcpwawlinm"))))
+    (build-system r-build-system)
+    (propagated-inputs
+     `(("r-dplyr" ,r-dplyr)
+       ("r-norm" ,r-norm)
+       ("r-forcats" ,r-forcats)
+       ("r-ggplot2" ,r-ggplot2)
+       ("r-glue" ,r-glue)
+       ("r-magrittr" ,r-magrittr)
+       ("r-purrr" ,r-purrr)
+       ("r-rlang" ,r-rlang)
+       ("r-tibble" ,r-tibble)
+       ("r-tidyr" ,r-tidyr)
+       ("r-upsetr" ,r-upsetr)
+       ("r-viridis" ,r-viridis)
+       ("r-visdat" ,r-visdat)))
+    (native-inputs
+     `(("r-knitr" ,r-knitr)))
+    (home-page "https://github.com/njtierney/naniar")
+    (synopsis
+     "Data structures, summaries, and visualisations for missing data")
+    (description
+     "Missing values are ubiquitous in data and need to be explored and
+handled in the initial stages of analysis.  The package provides data structures
+and functions that facilitate the plotting of missing values and examination of
+imputations.  This allows missing data dependencies to be explored with minimal
+deviation from the common work patterns of @code{ggplot2} and tidy data.")
+    (license license:expat)))