diff --git a/R/wiki_graph.R b/R/wiki_graph.R
new file mode 100644
index 0000000000000000000000000000000000000000..f510d303d09849090bac87bdaeb87753f33c3b79
--- /dev/null
+++ b/R/wiki_graph.R
@@ -0,0 +1,10 @@
+
+#' graph
+#' @format A data frame with 18 rows and 3 columns:
+#' \describe{
+#'   \item{v1}{node name}
+#'   \item{v2}{node name}
+#'   \item{w}{the weight between node v1 and node v2}
+#'   ...
+#' }
+wiki_graph 
\ No newline at end of file