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diff --git a/scripts/process_multiple_shp_CNES.py b/scripts/process_multiple_shp_CNES.py
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+#!/usr/bin/env python
+
+'''
+ This is a python wrapper for processing multiple shapefiles through the
+ CNES simulator. The wrapper is useful if you have a time series of model
+ output. Specify inputs below.
+
+ Author: Nicholas J. Elmer
+         NASA Marshall Space Flight Center
+         Huntsville, Alabama, USA
+         nicholas.j.elmer@nasa.gov
+
+ Date: November 26, 2019
+
+ This wrapper follows these steps:
+ 1) Create the SWOT orbit passplan.txt file (if it has not already
+    been created). The passplan.txt file specifies the time of each SWOT 
+    overpass over the domain extent specified in parameter_orbit.rdf.
+
+ 2) Read the passplan.txt cycle number, orbit number, and overpass time.
+
+ 3) Find the model output shapefile corresponding to the correct overpass
+    time. If model output is hourly, you should set 'roundhour = True' to
+    ensure the correct model output file is selected.
+
+ 4) Update the paramater_sisimp.rdf file with the correct shapefile path,
+    cycle number, and orbit number.
+
+ 5) Run the simulator, repeating until all valid (i.e., corresponding to
+    all passplan.txt cycle and orbits) shapefiles have been processed.
+'''
+
+import os
+import numpy as np
+import datetime
+
+### INPUTS ###
+#-------------------------------------------------------------------------
+# name of test case with height shapefiles
+# (e.g., river_and_lake, afrique, etc.)
+testcase = 'mytestcase'
+
+# shapefile filename date in datetime convention.
+# See https://docs.python.org/2/library/datetime.html for more information.
+modeltimefmt = '%Y-%m-%d_%H:%M:%S'
+
+# shapefile filenames should follow modeltime+shapefile_base convention.
+# If not, you will have to modify Line 124.
+# Do not include file extension .shp in shapefile_base. 
+# Example: If shapefile filename is 2019-11-26_12:00:00_myheights.shp, then:
+#   modeltimefmt = '%Y-%m-%d_%H:%M:%S'
+#   shapefile_base = '_myheights'
+shapefile_base = '_myheights' 
+
+# Round to nearest hour. Useful if model output is hourly.
+roundhour = True
+
+#Specify filepaths
+#file path to parameter_sisimp.rdf file
+#  (typically ./rdf/parameter_sisimp.rdf)
+rdfpath = './rdf/parameter_sisimp.rdf.test'
+
+#file path to passplan.txt
+#  (typically ./output/orbit/passplan.txt)
+planpath = './output/orbit/passplan.txt'
+
+#file path to mask/height shapefiles
+#  (typically $SWOT_HYDROLOGY_TOOLBOX/test/%s/data)
+maskpath = '$SWOT_HYDROLOGY_TOOLBOX/test/%s/data' %(testcase)
+
+
+
+
+
+
+
+
+
+
+
+
+### NO EDITS BELOW THIS LINE ###
+#-------------------------------------------------------------------------
+
+# Check if passplan.txt exists.
+# If not, run select_orbit_cnes.py using parameter_orbit.rdf
+print('Checking passplan...')
+if not os.path.exists(planpath):
+  print('Passplan does not exist. Running parameter_orbit.rdf...')
+  print('...Stay tuned...')
+  os.system('python $SWOT_HYDROLOGY_TOOLBOX/select_orbit_cnes/select_orbit_cnes.py rdf/parameter_orbit.rdf output/orbit')
+
+# open passplan.txt to read orbit information
+cycle = np.genfromtxt(planpath, dtype=int, usecols=(1))
+orbit = np.genfromtxt(planpath, dtype=int, usecols=(2))
+date = np.genfromtxt(planpath, dtype=str, usecols=(6))
+time = np.genfromtxt(planpath, dtype=str, usecols=(7))
+ntimes = len(time)
+
+# process each shapefile using the CNES simulator
+for i in range(ntimes):
+  
+  # convert passplan time to datetime tuple
+  proctime = datetime.datetime.strptime(date[i]+' '+time[i], '%Y-%m-%d %H:%M:%S')
+  # round to the nearest hour, if requested, and then convert to model output
+  #     shapefile timestamp convention
+  if roundhour:
+   roundtime = proctime.replace(second=0, minute=0, hour=proctime.hour) + \
+     datetime.timedelta(hours=proctime.minute//30)
+   modeltime = roundtime.strftime(modeltimefmt)
+  else:
+   modeltime = proctime.strftime(modeltimefmt)
+  print(modeltime, orbit[i], cycle[i])
+
+  # Create backup of rdf, named parameter_sisimp.rdf.orig
+  if not os.path.exists(rdfpath+'.orig'):
+    os.system('mv %s %s' %(rdfpath,rdfpath+'.orig'))
+  else:
+    os.system('rm %s' %(rdfpath))
+  # Then, create modified rdf, named parameter_sisimp.rdf
+  lines = open(rdfpath+'.orig').read().splitlines()
+  for j, line in zip(range(len(lines)),lines):
+    if line[0:16] == 'Shapefile path =':
+      lines[j] = 'Shapefile path = %s/%s%s' %(maskpath,modeltime,shapefile_base)
+    elif line[0:16] == 'Multiple orbit =':
+      lines[j] = 'Multiple orbit = no'
+    elif line[0:7] == 'Orbit =':
+      lines[j] = 'Orbit = %i' %(orbit[i])
+    elif line[0:14] == 'Cycle number =':
+      lines[j] = 'Cycle number = %i' %(cycle[i])
+  open(rdfpath, 'w').write('\n'.join(lines))
+
+  # run CNES simulator using modified parameter_sisimp.rdf
+  print('...Processing with simulator...')
+  os.system('python $SWOT_HYDROLOGY_TOOLBOX/sisimp/proc_sisimp.py rdf/parameter_sisimp.rdf')
+
+print('All shapefiles have been processed!')
+
+
+
+
+
+
+
+
+