INFO - Please read the following information carefully: INFO - find_wl_contours2: A method for extracting shorelines that uses the sand water interface detected with the model to refine the threshold that's used to detect shorelines . - This is the default method used when there are enough sand pixels within the reference shoreline buffer. INFO - find_wl_contours1: This shoreline extraction method uses a threshold to differentiate between water and land pixels in images, relying on Modified Normalized Difference Water Index (MNDWI) values. However, it may inaccurately classify snow and ice as water, posing a limitation in certain environments. - This is only used when not enough sand pixels are detected within the reference shoreline buffer. INFO - --------------------------------------------------------------------------------------------------------------------- INFO - Extracting shorelines for L5 Minimum Shoreline Length: 500 INFO - WARNING: CoastSat has hard-coded the value for the minimum shoreline length for L7 to 200 INFO - Extracting shorelines for L7 Minimum Shoreline Length: 200 INFO - Extracting shorelines for L8 Minimum Shoreline Length: 500 INFO - Processing image L8 2024-08-22-22-11-10 INFO - L8 2024-08-22-22-11-10 cloud cover : 0.00% INFO - L8 2024-08-22-22-11-10: sand: 0.00% ,whitewater: 0.00% ,water: 48.37% INFO - L8 2024-08-22-22-11-10: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 ERROR - L8 2024-08-22-22-11-10: Could not map shoreline due to error no valid pixels found in reference shoreline buffer. Traceback (most recent call last): File "/home/ubuntu/.local/lib/python3.10/site-packages/coastsat/SDS_shoreline.py", line 626, in extract_shorelines contours_mwi, t_mndwi = find_wl_contours1( File "/home/ubuntu/.local/lib/python3.10/site-packages/coastsat/SDS_shoreline.py", line 921, in find_wl_contours1 raise ValueError("no valid pixels found in reference shoreline buffer.") ValueError: no valid pixels found in reference shoreline buffer. ERROR - Skipping L8 2024-08-22-22-11-34 due to cloud cover percentage exceeding cloud threshold: 37.93% > 10.00%. ERROR - Skipping L8 2024-09-07-22-11-43 due to cloud cover percentage exceeding cloud threshold: 93.19% > 10.00%. ERROR - Skipping L8 2024-09-23-22-11-42 due to cloud cover percentage exceeding cloud threshold: 39.11% > 10.00%. ERROR - Skipping L8 2024-10-09-22-11-45 due to cloud cover percentage exceeding cloud threshold: 60.00% > 10.00%. INFO - Extracting shorelines for L9 Minimum Shoreline Length: 500 ERROR - Skipping L9 2024-08-30-22-11-11 due to cloud cover percentage exceeding cloud threshold: 22.33% > 10.00%. ERROR - Skipping L9 2024-08-30-22-11-35 due to cloud cover percentage exceeding cloud threshold: 89.33% > 10.00%. ERROR - Skipping L9 2024-11-02-22-11-29 due to cloud cover percentage exceeding cloud threshold: 60.39% > 10.00%. ERROR - Skipping L9 2024-11-02-22-11-53 due to cloud cover percentage exceeding cloud threshold: 86.22% > 10.00%. ERROR - Skipping L9 2024-11-18-22-11-35 due to cloud cover percentage exceeding cloud threshold: 48.73% > 10.00%. ERROR - Skipping L9 2024-11-18-22-11-59 due to cloud cover percentage exceeding cloud threshold: 21.93% > 10.00%.