diff --git a/R/data.R b/R/data.R
index b504a941..1bc92f0a 100644
--- a/R/data.R
+++ b/R/data.R
@@ -38,8 +38,8 @@
 
 #' @title example of spatial information system spatial adjacency matrix
 #'
-#' @name ssr_wt
-#' @format \code{ssr_wt}: A matrix with 11rows and 11cols.
+#' @name srs_wt
+#' @format \code{srs_wt}: A matrix with 11rows and 11cols.
 #' @docType data
-#' @keywords dataset ssr_wt
-"ssr_wt"
+#' @keywords dataset srs_wt
+"srs_wt"
diff --git a/data/srs_wt.rda b/data/srs_wt.rda
new file mode 100644
index 00000000..a8f289ce
Binary files /dev/null and b/data/srs_wt.rda differ
diff --git a/data/ssr_wt.rda b/data/ssr_wt.rda
deleted file mode 100644
index 30568a60..00000000
Binary files a/data/ssr_wt.rda and /dev/null differ