Remove end_filename

This was used in old times to distinguish between triplets of
shapefiles. Now we have the philosophy of creating a dedicated
directory for a triplet. So the script `distribution_function.py` just
has to be run in the triplet directory.

Analysis/distribution_function.py

@@ -16,7 +16,7 @@ def plot_distr_funct(x, label = None, ax = None):
     print("maximum value:", x[-1])
     print("number of values:", nx, "\n")
 
-def read(end_filename = ""):
+def read():
     """Read the three dbf files and return speed, radius and amplitude of
     outermost contour, radius and amplitude of maximum speed contour,
     as Numpy arrays.
@@ -26,9 +26,9 @@ def read(end_filename = ""):
 
     """
     
-    with shapefile.Reader("extremum" + end_filename) as extremum, \
-         shapefile.Reader("outermost_contour" + end_filename) as outerm_cont, \
-         shapefile.Reader("max_speed_contour" + end_filename) as max_speed_cont:
+    with shapefile.Reader("extremum") as extremum, \
+         shapefile.Reader("outermost_contour") as outerm_cont, \
+         shapefile.Reader("max_speed_contour") as max_speed_cont:
         speed = []
         rad_outer = []
         rad_speed = []
@@ -121,15 +121,7 @@ def plot_all(dict_list, label = None):
                     label)
     
 if __name__ == "__main__":
-    import argparse
-    
-    parser = argparse.ArgumentParser()
-    parser.add_argument("-e", "--end_filename",
-                        help = "add character string after "
-                        "extremum, outermost_contour and max_speed_contour",
-                        default = "")
-    args = parser.parse_args()
-    d = read(args.end_filename)
+    d = read()
     plot_all([d])
     
     plt.show()