Add basic DataModel class

tracetools_analysis/analysis/data_model.py

@@ -0,0 +1,24 @@
+# Data model
+
+import pandas as pd
+
+
+class DataModel():
+    """
+    Container to model processed data.
+
+    Contains data for an analysis to use.
+    """
+
+    def __init__(self):
+        # Objects (one-time events, usually when something is created)
+        self._contexts = pd.DataFrame(columns=[])
+        self._nodes = pd.DataFrame(columns=[])
+        self._publishers = pd.DataFrame(columns=[])
+        self._subscriptions = pd.DataFrame(columns=[])
+        self._services = pd.DataFrame(columns=[])
+        self._clients = pd.DataFrame(columns=[])
+        self._timers = pd.DataFrame(columns=[])
+
+        # Events
+        # TODO