diff --git a/post_process/animate/__main__.py b/post_process/animate/__main__.py
index 852785d..37e5726 100644
--- a/post_process/animate/__main__.py
+++ b/post_process/animate/__main__.py
@@ -5,12 +5,13 @@ parser = argparse.ArgumentParser(
 )
 parser.add_argument('var', type=str,
     help='OpenFoam variable to display')
-parser.add_argument('-c', '--config', type=str,
-    default='config.ini',
-    help='Configuration file (default config.ini)')
+parser.add_argument('-c', '--config', type=Path, default='config.ini',
+    help='configuration file (default config.ini)')
+parser.add_argument('-l', '--log-level', default='info', type=str,
+    help='log level')
 
 args = parser.parse_args()
 
 if args.var == 'alpha.water':
     import alpha_water
-    alpha_water.animate(args.config)
+    alpha_water.animate(args.config, args.log_level)
diff --git a/post_process/animate/alpha_water.py b/post_process/animate/alpha_water.py
index 85da6ee..1870957 100644
--- a/post_process/animate/alpha_water.py
+++ b/post_process/animate/alpha_water.py
@@ -19,19 +19,21 @@ import pandas as pd
 mpl.use('agg')
 
 import fluidfoam
-#import stl
 
-def animate(config_path):
+def animate(config_path, log_level):
     tt0 = time()
     
     config = configparser.ConfigParser()
     config.read(config_path)
 
+    logging.basicConfig(
+        filename=config.get('main', 'log_file', fallback=None),
+        level=log_level
+    )
     log = logging.getLogger('alpha_water')
-    logging.basicConfig(encoding='utf-8', level=config['main']['logging'])
     log.info('Starting')
     
-    root = Path(config['main']['root']).expanduser()
+    root = Path(config.get('main', 'root')).expanduser()
     
     t = []
     
@@ -61,13 +63,13 @@ def animate(config_path):
     alpha_water['y'] = mesh[2]
     
     with pd.HDFStore(
-        config['data']['path'],
+        config.get('data', 'path'),
         mode='r',
     ) as hdf:
         bathy = hdf.get('bathy')
         rubble = hdf.get('rubble')
         blocs = {}
-        for bloc in config['data']['blocs'].split(','):
+        for bloc in config.get('data', 'blocs', fallback='').split(','):
             blocs[bloc] = hdf.get(bloc)
     
     log.info('Starting plot')
@@ -132,6 +134,6 @@ def animate(config_path):
         blit=True,
         repeat=True
     )
-    ani.save(config['main']['out'])
+    ani.save(config.get('main', 'out'))
     
     log.info('Program ended successfully')
diff --git a/post_process/config.example.ini b/post_process/config.example.ini
index be7d9c9..575eb68 100644
--- a/post_process/config.example.ini
+++ b/post_process/config.example.ini
@@ -1,7 +1,7 @@
 [main]
-logging = INFO
 root = /home/masterccce/OpenFOAM/work/artha
 out = out/anim.mp4
+#log_file = openfoam.log
 
 [data]
 path = ../bathymetry/3_pd/data.hdf