diff --git a/olaflow/processing/animate.py b/olaflow/processing/animate.py
index 3cb3692..4873e99 100644
--- a/olaflow/processing/animate.py
+++ b/olaflow/processing/animate.py
@@ -1,5 +1,4 @@
 import argparse
-import configparser
 import gzip
 import logging
 import multiprocessing as mp
@@ -16,16 +15,20 @@ from .olaflow import OFModel
 
 parser = argparse.ArgumentParser(description="Post-process olaflow results")
 parser.add_argument("-v", "--verbose", action="count", default=0)
-parser.add_argument("-c", "--config", default="config.ini")
+parser.add_argument(
+    "-o",
+    "--output",
+    type=pathlib.Path,
+    help="Output directory for pickled data",
+    required=True,
+)
 args = parser.parse_args()
 
 logging.basicConfig(level=max((10, 20 - 10 * args.verbose)))
 log = logging.getLogger("ola_post")
 
 log.info("Animating olaFlow output")
-config = configparser.ConfigParser()
-config.read(args.config)
-out = pathlib.Path(config.get("post", "out"))
+out = args.output
 out.mkdir(parents=True, exist_ok=True)
 
 with (
@@ -35,8 +38,6 @@ with (
 ) as f:
     model = pickle.load(f)
 
-x0 = config.getfloat("post", "x")
-z0 = config.getfloat("post", "z")
 i0 = np.argmin(np.abs((model.x - x0) + 1j * (model.z - z0)))
 
 x0, idx0 = np.unique(model.x.astype(np.half), return_inverse=True)
@@ -54,7 +55,7 @@ U = np.full((model.t.size, *X.shape), np.nan)
 U[:, idz0, idx0] = np.linalg.norm(model.fields["U"], axis=1)
 
 fig = plt.figure(figsize=(19.2, 10.8), dpi=100)
-gs = GridSpec(3, 1, figure=fig, height_ratios=[1, .05, .05])
+gs = GridSpec(3, 1, figure=fig, height_ratios=[1, 0.05, 0.05])
 ax = fig.add_subplot(gs[0])
 cax1 = fig.add_subplot(gs[1])
 cax2 = fig.add_subplot(gs[2])
@@ -92,7 +93,7 @@ def anim(i):
 
 
 figU = plt.figure(figsize=(19.2, 10.8), dpi=100)
-gsU = GridSpec(3, 1, figure=figU, height_ratios=[1, .05, .05])
+gsU = GridSpec(3, 1, figure=figU, height_ratios=[1, 0.05, 0.05])
 axU = figU.add_subplot(gsU[0])
 caxu1 = figU.add_subplot(gsU[1])
 caxu2 = figU.add_subplot(gsU[2])
@@ -140,8 +141,8 @@ def animU(i):
     ur_m.set_alpha(1 - np.nan_to_num(AW[i]).clip(0, 1))
 
 
-ani = animation.FuncAnimation(fig, anim, frames=model.t.size, interval=1/24)
-aniU = animation.FuncAnimation(figU, animU, frames=model.t.size, interval=1/24)
+ani = animation.FuncAnimation(fig, anim, frames=model.t.size, interval=1 / 24)
+aniU = animation.FuncAnimation(figU, animU, frames=model.t.size, interval=1 / 24)
 
 ani.save(out.joinpath("anim.mp4"), fps=24)
 aniU.save(out.joinpath("animU.mp4"), fps=24)
diff --git a/olaflow/processing/animateU.py b/olaflow/processing/animateU.py
index 18c7298..5a356b1 100644
--- a/olaflow/processing/animateU.py
+++ b/olaflow/processing/animateU.py
@@ -1,5 +1,4 @@
 import argparse
-import configparser
 import gzip
 import logging
 import multiprocessing as mp
@@ -16,16 +15,20 @@ from .olaflow import OFModel
 
 parser = argparse.ArgumentParser(description="Post-process olaflow results")
 parser.add_argument("-v", "--verbose", action="count", default=0)
-parser.add_argument("-c", "--config", default="config.ini")
+parser.add_argument(
+    "-o",
+    "--output",
+    type=pathlib.Path,
+    help="Output directory for pickled data",
+    required=True,
+)
 args = parser.parse_args()
 
 logging.basicConfig(level=max((10, 20 - 10 * args.verbose)))
 log = logging.getLogger("ola_post")
 
 log.info("Animating olaFlow output")
-config = configparser.ConfigParser()
-config.read(args.config)
-out = pathlib.Path(config.get("post", "out"))
+out = args.output
 out.mkdir(parents=True, exist_ok=True)
 
 with (
@@ -35,9 +38,6 @@ with (
 ) as f:
     model = pickle.load(f)
 
-x0 = config.getfloat("post", "x")
-z0 = config.getfloat("post", "z")
-
 flt = np.where((model.x >= -60) & (model.x <= -20) & (model.z >= 0) & (model.z <= 10))[
     0
 ]
diff --git a/olaflow/processing/diff.py b/olaflow/processing/diff.py
index 8d23ba5..6cf0025 100644
--- a/olaflow/processing/diff.py
+++ b/olaflow/processing/diff.py
@@ -56,4 +56,6 @@ for i, (_ax, _model) in enumerate(zip(ax, models)):
     _ax.set(xlabel="t (s)", ylabel="z (m)", title=f"Case {i}")
     _ax.grid()
 
-fig.savefig(args.output[0].joinpath(f"diff_{'_'.join([o.name for o in args.output])}.pdf"))
+fig.savefig(
+    args.output[0].joinpath(f"diff_{'_'.join([o.name for o in args.output])}.pdf")
+)
diff --git a/olaflow/processing/olaflow.py b/olaflow/processing/olaflow.py
index f83c58d..30329e8 100644
--- a/olaflow/processing/olaflow.py
+++ b/olaflow/processing/olaflow.py
@@ -53,7 +53,9 @@ class OFModel:
         return _field
 
     def read_post(self, func, field):
-        _ft = lambda _d: self._root.joinpath("postProcessing", func, _d, f"line_{field}.xy")
+        _ft = lambda _d: self._root.joinpath(
+            "postProcessing", func, _d, f"line_{field}.xy"
+        )
         _res_0 = np.loadtxt(_ft(self._t_dirs[0]))
         _x = _res_0[:, 0]
         _res = np.empty((self._t.size, _x.size))
@@ -64,9 +66,10 @@ class OFModel:
             f"x_{field}": _x,
             field: _res,
         }
-        if func not in self._post_fields.keys(): self._post_fields[func] = {}
+        if func not in self._post_fields.keys():
+            self._post_fields[func] = {}
         self._post_fields[func] |= _dict
-        return _dict 
+        return _dict
 
     def write_field(self, field, values):
         with open(self._root.joinpath("0", field), "r") as aw_file: