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 2024-12-03-22-17-45 INFO - L8 2024-12-03-22-17-45 cloud cover : 1.06% INFO - L8 2024-12-03-22-17-45: sand: 1.92% ,whitewater: 0.14% ,water: 55.45% INFO - L8 2024-12-03-22-17-45: Greater than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours2 INFO - Number of shorelines before removing shorelines < 500m: 9 shorelines. Number of shorelines after filtering shorelines: 4 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 937 INFO - Number of shoreline points after removing points within 300m of cloud mask 937 INFO - Number of shoreline points before removing points within 30m of no data pixel 937 INFO - Number of shoreline points after removing points within 30m of no data pixel 937 ERROR - Skipping L8 2024-12-19-22-17-37 due to cloud cover percentage exceeding cloud threshold: 49.25% > 10.00%. INFO - Processing image L8 2025-01-13-22-11-30 INFO - L8 2025-01-13-22-11-30 cloud cover : 0.00% INFO - L8 2025-01-13-22-11-30: sand: 0.17% ,whitewater: 0.00% ,water: 2.25% INFO - L8 2025-01-13-22-11-30: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 25 shorelines. Number of shorelines after filtering shorelines: 0 shorelines INFO - Processing image L8 2025-01-29-22-11-28 INFO - L8 2025-01-29-22-11-28 cloud cover : 0.00% INFO - L8 2025-01-29-22-11-28: sand: 0.00% ,whitewater: 0.00% ,water: 2.83% INFO - L8 2025-01-29-22-11-28: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 11 shorelines. Number of shorelines after filtering shorelines: 0 shorelines ERROR - Skipping L8 2025-02-05-22-17-39 due to cloud cover percentage exceeding cloud threshold: 30.70% > 10.00%. INFO - Extracting shorelines for L9 Minimum Shoreline Length: 500 INFO - Processing image L9 2024-12-04-22-11-36 INFO - L9 2024-12-04-22-11-36 cloud cover : 0.00% INFO - L9 2024-12-04-22-11-36: sand: 0.63% ,whitewater: 0.05% ,water: 16.01% INFO - L9 2024-12-04-22-11-36: Greater than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours2 INFO - Number of shorelines before removing shorelines < 500m: 6 shorelines. Number of shorelines after filtering shorelines: 2 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 455 INFO - Number of shoreline points after removing points within 300m of cloud mask 455 INFO - Number of shoreline points before removing points within 30m of no data pixel 455 INFO - Number of shoreline points after removing points within 30m of no data pixel 454 INFO - Processing image L9 2024-12-20-22-11-35 INFO - L9 2024-12-20-22-11-35 cloud cover : 0.00% INFO - L9 2024-12-20-22-11-35: sand: 0.10% ,whitewater: 0.01% ,water: 2.68% INFO - L9 2024-12-20-22-11-35: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 2 shorelines. Number of shorelines after filtering shorelines: 1 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 165 INFO - Number of shoreline points after removing points within 300m of cloud mask 165 INFO - Number of shoreline points before removing points within 30m of no data pixel 165 INFO - Number of shoreline points after removing points within 30m of no data pixel 163 ERROR - Skipping L9 2024-12-27-22-17-46 due to cloud cover percentage exceeding cloud threshold: 69.27% > 10.00%. INFO - Processing image L9 2025-01-12-22-17-45 INFO - L9 2025-01-12-22-17-45 cloud cover : 1.47% INFO - L9 2025-01-12-22-17-45: sand: 1.73% ,whitewater: 0.12% ,water: 55.37% INFO - L9 2025-01-12-22-17-45: Greater than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours2 INFO - Number of shorelines before removing shorelines < 500m: 13 shorelines. Number of shorelines after filtering shorelines: 3 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 735 INFO - Number of shoreline points after removing points within 300m of cloud mask 561 INFO - Number of shoreline points before removing points within 30m of no data pixel 561 INFO - Number of shoreline points after removing points within 30m of no data pixel 561 INFO - Processing image L9 2025-01-21-22-11-37 INFO - L9 2025-01-21-22-11-37 cloud cover : 0.00% INFO - L9 2025-01-21-22-11-37: sand: 0.04% ,whitewater: 0.00% ,water: 5.51% INFO - L9 2025-01-21-22-11-37: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 12 shorelines. Number of shorelines after filtering shorelines: 4 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 478 INFO - Number of shoreline points after removing points within 300m of cloud mask 478 INFO - Number of shoreline points before removing points within 30m of no data pixel 478 INFO - Number of shoreline points after removing points within 30m of no data pixel 476 ERROR - Skipping L9 2025-01-28-22-17-42 due to cloud cover percentage exceeding cloud threshold: 46.65% > 10.00%. INFO - Processing image L9 2025-02-06-22-11-31 INFO - L9 2025-02-06-22-11-31 cloud cover : 0.00% INFO - L9 2025-02-06-22-11-31: sand: 0.10% ,whitewater: 0.03% ,water: 0.35% INFO - L9 2025-02-06-22-11-31: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 ERROR - L9 2025-02-06-22-11-31: 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 686, in extract_shorelines contours_mwi, t_mndwi = find_wl_contours1( File "/home/ubuntu/.local/lib/python3.10/site-packages/coastsat/SDS_shoreline.py", line 981, in find_wl_contours1 raise ValueError("no valid pixels found in reference shoreline buffer.") ValueError: no valid pixels found in reference shoreline buffer. INFO - Processing image L9 2025-02-22-22-11-33 INFO - L9 2025-02-22-22-11-33 cloud cover : 0.00% INFO - L9 2025-02-22-22-11-33: sand: 0.42% ,whitewater: 0.00% ,water: 5.58% INFO - L9 2025-02-22-22-11-33: Greater than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours2 INFO - Number of shorelines before removing shorelines < 500m: 5 shorelines. Number of shorelines after filtering shorelines: 1 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 263 INFO - Number of shoreline points after removing points within 300m of cloud mask 263 INFO - Number of shoreline points before removing points within 30m of no data pixel 263 INFO - Number of shoreline points after removing points within 30m of no data pixel 260 ERROR - Skipping L9 2025-03-01-22-17-39 due to cloud cover percentage exceeding cloud threshold: 11.61% > 10.00%.