1 files changed, 51 insertions, 0 deletions
diff --git a/structure/activity/node_activity.py b/structure/activity/node_activity.py
new file mode 100644
index 0000000..6410a68
--- /dev/null
+++ b/structure/activity/node_activity.py
@@ -0,0 +1,51 @@
+####
+##
+## Take as input the layers of a multiplex, and provide as output a
+## file where the n-th line contains the activity of the n-th node. We
+## assume that nodes are numbered sequentially, starting from 0, with
+## no gaps (i.e., missing nodes are treated as isolated nodes)
+##
+##
+##
+
+
+import sys
+
+if len(sys.argv) < 2:
+    print "Usage: %s <layer1> [<layer2>...]" % sys.argv[0]
+    sys.exit(1)
+
+node_activity = {}
+
+max_N = -1
+
+for layer in sys.argv[1:]:
+    active = []
+    with open(layer, "r") as lines:
+        for l in lines:
+            if l[0] == "#":
+                continue
+            
+            s, d = [int(x) for x in l.strip(" \n").split(" ")[:2]]
+            active.extend([s,d])
+            if s > max_N:
+                max_N = s
+            if d > max_N:
+                max_N = d
+        active = set(active)
+        for n in active:
+            if n in node_activity:
+                node_activity[n] += 1
+            else:
+                node_activity[n] = 1
+    
+
+for n in range(max_N+1):
+    if n in node_activity:
+        print node_activity[n]
+    else:
+        print 0
+
+
+
+