diff --git a/README.md b/README.md
index 8f05256..f8ae3e6 100644
--- a/README.md
+++ b/README.md
@@ -672,6 +672,10 @@ Once the environment has been built, activate the environment:
 ```
 conda activate centerline_width
 ```
+To run existing and new tests from the root directory:
+```
+python -m pytest
+```
 
 ## Citations
 Originally a Python implementation of [R-Code CMGO](https://github.com/AntoniusGolly/cmgo) (Golly et al. 2017) but has been extensively expanded:
diff --git a/centerline_width/preprocessing.py b/centerline_width/preprocessing.py
index 6076f1c..92c2de1 100644
--- a/centerline_width/preprocessing.py
+++ b/centerline_width/preprocessing.py
@@ -2,6 +2,7 @@
 import csv
 import logging
 import math
+import os
 
 # External Python libraries (installed via pip install)
 from collections import Counter
@@ -43,7 +44,11 @@ def convertColumnsToCSV(text_file=None, flipBankDirection=False):
 	for i, row in enumerate(left_rows):
 		total_rows.append(row + right_rows[i])
 
-	write_file_name = text_file.split(".")[0] + ".csv"
+	# account for relative and absolute paths to use text_file name and location for .csv
+	full_path, filename = os.path.split(os.path.abspath(text_file))
+	csv_file_name = filename.split(".")[0] + ".csv"
+	write_file_name = os.path.join(full_path, csv_file_name)
+
 	with open(write_file_name, "w") as f:
 		write = csv.writer(f)
 		write.writerow(header_fields)
diff --git a/river_centerline_width_example.py b/river_centerline_width_example.py
index 0e082a6..047dc42 100644
--- a/river_centerline_width_example.py
+++ b/river_centerline_width_example.py
@@ -2,15 +2,15 @@
 import centerline_width
 
 if __name__ == "__main__":
+	#centerline_width.extractPointsToTextFile(left_kml="data/leftbank.kml",
+	#										right_kml="data/rightbank.kml",
+	#										text_output_name="data/river_coords.txt")										
 	#centerline_width.convertColumnsToCSV(text_file="data/river_coords.txt", flipBankDirection=True)
 
-	centerline_width.extractPointsToTextFile(left_kml="data/leftbank.kml",
-											right_kml="data/rightbank.kml",
-											text_output_name="data/river_coords.txt")
 	#centerline_width.extractPointsToTextFile(left_kml="data/59deg48_18dot87_N_69deg46_59dot57_E_lb.kml",
 	#										right_kml="data/59deg48_18dot87_N_69deg46_59dot57_E_rb.kml",
 	#										text_output_name="data/N_output.txt")
-	centerline_width.convertColumnsToCSV(text_file="data/river_coords.txt", flipBankDirection=True)
+	#centerline_width.convertColumnsToCSV(text_file="data/river_coords.txt", flipBankDirection=True)
 
 	# Valid Examples
 	cutoff = None
@@ -93,7 +93,7 @@
 													transect_slope=slope_type,
 													apply_smoothing=False,
 													remove_intersections=False,
-													save_to_csv="testing_new.csv",
+													save_to_csv=None,
 													coordinate_reference="banks",
 													coordinate_unit=coord_type)