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--- r:igraph [2018/01/11 08:42] – hkimscil
+++ r:igraph [2018/01/11 09:10] (current) – hkimscil
@@ Line 6: / Line 6: @@
 nodes (vertex)
 edges (lines)
+  * freight schedule
+  * friendship
+  * contact
+  * relationship
 social network
 {{http://s3.amazonaws.com/assets.datacamp.com/production/course_4474/datasets/networkimg.png?280}}
 adjency matrix
-{{http://s3.amazonaws.com/assets.datacamp.com/production/course_4474/datasets/networkmat.png?280}}
+{{http://s3.amazonaws.com/assets.datacamp.com/production/course_4474/datasets/networkmat.png?240}}
-edge list
+edge list - economical way to store data
 {{http://s3.amazonaws.com/assets.datacamp.com/production/course_4474/datasets/networkedg.png?85}}
+<code>library(igraph)
+# df = data frame data
+g <- graph.edgelist(as.matrix(df), directed = FALSE)
+</code>