Use _ instead of space in metric names

Author: dimkarakostas

config.yaml

@@ -1,9 +1,9 @@
 # The metrics for which an analysis should be performed.
 metrics:
   - hhi
-  - shannon entropy
+  - shannon_entropy
   - gini
-  - total entities
+  - total_entities
   - tau=0.33
   - tau=0.5
   - tau=0.66
@@ -48,9 +48,9 @@ plot_parameters:
     - tezos
   metrics:
     - hhi
-    - shannon entropy
+    - shannon_entropy
     - gini
-    - total entities
+    - total_entities
     - tau=0.33
     - tau=0.5
     - tau=0.66

tokenomics_decentralization/analyze.py

@@ -31,9 +31,9 @@ def analyze_snapshot(conn, ledger, snapshot):
 
     compute_functions = {
         'hhi': compute_hhi,
-        'shannon entropy': compute_shannon_entropy,
+        'shannon_entropy': compute_shannon_entropy,
         'gini': compute_gini,
-        'total entities': compute_total_entities,
+        'total_entities': compute_total_entities,
         'mpr': compute_max_power_ratio,
         'theil': compute_theil_index
     }
@@ -69,7 +69,7 @@ def analyze_snapshot(conn, ledger, snapshot):
 
                 if top_limit_value > 0:
                     if top_limit_type == 'percentage':
-                        total_entities = compute_functions['total entities'](entries, circulation)
+                        total_entities = compute_functions['total_entities'](entries, circulation)
                         top_limit_percentage_value = int(total_entities * top_limit_value)
                         entries = entries[:top_limit_percentage_value]
                     elif top_limit_type == 'absolute':