diff --git a/brukeropusreader/opus_data.py b/brukeropusreader/opus_data.py
index 3407358..fd3e648 100644
--- a/brukeropusreader/opus_data.py
+++ b/brukeropusreader/opus_data.py
@@ -1,4 +1,3 @@
-import matplotlib.pyplot as plt
 import csv
 import numpy as np
 from numpy import linalg
@@ -19,38 +18,12 @@ class OpusData(object):
         self.interpolated_data = interp
         self.meta = meta
 
-    def plot_raw(self):
-        plt.plot(self.raw_data[0], self.raw_data[1], 'o', markeredgewidth=1,
-                 markeredgecolor='r', markerfacecolor='None')
-        plt.show()
-
-    def plot_interpolated(self):
-        if self.interpolated_data:
-            plt.plot(self.interpolated_data[0], self.interpolated_data[1], 'o')
-            plt.show()
-        else:
-            raise NoInterpolatedDataException()
-
-    def plot_data(self):
-        plt.plot(self.raw_data[0], self.raw_data[1], 'bo')
-        if self.interpolated_data:
-            plt.plot(self.interpolated_data[0],
-                     self.interpolated_data[1],
-                     'ro')
-        plt.show()
-
     def compare_with(self, file_path):
         with open(file_path, 'rb') as csv_file:
             csv_reader = csv.reader(csv_file)
-            x_r = np.array(map(lambda x: float(x[1:]), next(csv_reader)[2:]))
             y_r = np.array(map(lambda x: float(x), next(csv_reader)[2:]))
-            dist = linalg.norm(y_r - self.interpolated_data[1], ord=1)
-            print("L1 distance between rbart and python versions:", dist)
-            plt.plot(x_r, y_r, 'bo')
-            plt.plot(self.interpolated_data[0],
-                     self.interpolated_data[1],
-                     'ro')
-            plt.show()
+            dist = linalg.norm(y_r - self.raw_data[1], ord=1)
+            print("L1 distance between series:", dist)
 
     def gen_interp_waves(self, conf):
         wunit = (conf.wave_start - conf.wave_end) / (float(conf.iwsize - 1))
diff --git a/example.py b/example.py
index 1156638..abd1bf6 100644
--- a/example.py
+++ b/example.py
@@ -1,26 +1,18 @@
 from brukeropusreader.opus_reader import opus_reader
-from os import walk
-import os
+
 import sys
+import argparse
 
 
-def filter_fun(nm):
-    return (nm[0] != '.') and (nm[-2:] in ('.0', '.1', '.2', '.3'))
-
-
-def main(path_to_opus_files):
-    i = 0
-    all_files = 0
-    for path, subdirs, files in walk(path_to_opus_files):
-        for name in filter(filter_fun, files):
-            all_files += 1
-            try:
-                od = opus_reader(os.path.join(path, name))
-                od.plot_raw()
-            except Exception as e:
-                i += 1
-                print(i, ":", name, str(e))
+def main(path_to_file):
+    od = opus_reader(path_to_file)
+    print(od.raw_data[1])
 
 
 if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument("opus_path",
+                        help="Path to opus file",
+                        action="store")
+    args = parser.parse_args()
     main(sys.argv[1])
diff --git a/requirements.in b/requirements.in
index f23634b..6bad103 100644
--- a/requirements.in
+++ b/requirements.in
@@ -1,3 +1,2 @@
 numpy
 scipy
-matplotlib
diff --git a/requirements.txt b/requirements.txt
index f69a35d..450dea8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,13 +4,5 @@
 #
 #    pip-compile --output-file requirements.txt requirements.in
 #
-backports.functools-lru-cache==1.4  # via matplotlib
-cycler==0.10.0            # via matplotlib
-matplotlib==2.1.0
 numpy==1.13.3
-pyparsing==2.2.0          # via matplotlib
-python-dateutil==2.6.1    # via matplotlib
-pytz==2017.2              # via matplotlib
 scipy==0.19.1
-six==1.11.0               # via cycler, matplotlib, python-dateutil
-subprocess32==3.2.7       # via matplotlib