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 ERROR - Skipping L8 2024-11-08-22-26-35 due to cloud cover percentage exceeding cloud threshold: 84.38% > 10.00%. INFO - Processing image L8 2024-12-03-22-20-32 INFO - L8 2024-12-03-22-20-32 cloud cover : 0.28% INFO - L8 2024-12-03-22-20-32: sand: 0.00% ,whitewater: 44.74% ,water: 0.00% INFO - L8 2024-12-03-22-20-32: 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: 0 shorelines INFO - Processing image L8 2024-12-26-22-26-13 INFO - L8 2024-12-26-22-26-13 cloud cover : 0.70% INFO - L8 2024-12-26-22-26-13: sand: 0.00% ,whitewater: 0.02% ,water: 54.98% INFO - L8 2024-12-26-22-26-13: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 16 shorelines. Number of shorelines after filtering shorelines: 5 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 1356 INFO - Number of shoreline points after removing points within 300m of cloud mask 1165 INFO - Number of shoreline points before removing points within 30m of no data pixel 1165 INFO - Number of shoreline points after removing points within 30m of no data pixel 1165 INFO - Processing image L8 2024-12-26-22-26-37 INFO - L8 2024-12-26-22-26-37 cloud cover : 0.43% INFO - L8 2024-12-26-22-26-37: sand: 0.00% ,whitewater: 0.02% ,water: 55.21% INFO - L8 2024-12-26-22-26-37: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 17 shorelines. Number of shorelines after filtering shorelines: 5 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 1394 INFO - Number of shoreline points after removing points within 300m of cloud mask 1206 INFO - Number of shoreline points before removing points within 30m of no data pixel 1206 INFO - Number of shoreline points after removing points within 30m of no data pixel 1206 INFO - Processing image L8 2025-01-11-22-26-16 INFO - L8 2025-01-11-22-26-16 cloud cover : 0.00% INFO - L8 2025-01-11-22-26-16: sand: 0.00% ,whitewater: 0.01% ,water: 55.86% INFO - L8 2025-01-11-22-26-16: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 15 shorelines. Number of shorelines after filtering shorelines: 5 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 1558 INFO - Number of shoreline points after removing points within 300m of cloud mask 1558 INFO - Number of shoreline points before removing points within 30m of no data pixel 1558 INFO - Number of shoreline points after removing points within 30m of no data pixel 1558 INFO - Processing image L8 2025-01-11-22-26-40 INFO - L8 2025-01-11-22-26-40 cloud cover : 0.00% INFO - L8 2025-01-11-22-26-40: sand: 0.00% ,whitewater: 0.01% ,water: 55.87% INFO - L8 2025-01-11-22-26-40: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 15 shorelines. Number of shorelines after filtering shorelines: 5 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 1562 INFO - Number of shoreline points after removing points within 300m of cloud mask 1562 INFO - Number of shoreline points before removing points within 30m of no data pixel 1562 INFO - Number of shoreline points after removing points within 30m of no data pixel 1562 INFO - Processing image L8 2025-01-27-22-26-12 INFO - L8 2025-01-27-22-26-12 cloud cover : 0.09% INFO - L8 2025-01-27-22-26-12: sand: 0.00% ,whitewater: 0.18% ,water: 55.75% INFO - L8 2025-01-27-22-26-12: 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: 5 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 1569 INFO - Number of shoreline points after removing points within 300m of cloud mask 1569 INFO - Number of shoreline points before removing points within 30m of no data pixel 1569 INFO - Number of shoreline points after removing points within 30m of no data pixel 1569 INFO - Processing image L8 2025-01-27-22-26-36 INFO - L8 2025-01-27-22-26-36 cloud cover : 0.11% INFO - L8 2025-01-27-22-26-36: sand: 0.00% ,whitewater: 0.19% ,water: 55.74% INFO - L8 2025-01-27-22-26-36: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 13 shorelines. Number of shorelines after filtering shorelines: 5 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 1568 INFO - Number of shoreline points after removing points within 300m of cloud mask 1568 INFO - Number of shoreline points before removing points within 30m of no data pixel 1568 INFO - Number of shoreline points after removing points within 30m of no data pixel 1568 INFO - Processing image L8 2025-02-05-22-20-27 INFO - L8 2025-02-05-22-20-27 cloud cover : 0.00% INFO - L8 2025-02-05-22-20-27: sand: 0.00% ,whitewater: 0.00% ,water: 0.00% INFO - L8 2025-02-05-22-20-27: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 ERROR - L8 2025-02-05-22-20-27: 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 L8 2025-02-12-22-26-09 INFO - L8 2025-02-12-22-26-09 cloud cover : 4.88% INFO - L8 2025-02-12-22-26-09: sand: 0.00% ,whitewater: 0.01% ,water: 56.96% INFO - L8 2025-02-12-22-26-09: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 13 shorelines. Number of shorelines after filtering shorelines: 4 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 1532 INFO - Number of shoreline points after removing points within 300m of cloud mask 1532 INFO - Number of shoreline points before removing points within 30m of no data pixel 1532 INFO - Number of shoreline points after removing points within 30m of no data pixel 1532 INFO - Processing image L8 2025-02-12-22-26-33 INFO - L8 2025-02-12-22-26-33 cloud cover : 4.22% INFO - L8 2025-02-12-22-26-33: sand: 0.00% ,whitewater: 0.01% ,water: 56.99% INFO - L8 2025-02-12-22-26-33: 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 1542 INFO - Number of shoreline points after removing points within 300m of cloud mask 1542 INFO - Number of shoreline points before removing points within 30m of no data pixel 1542 INFO - Number of shoreline points after removing points within 30m of no data pixel 1542 INFO - Extracting shorelines for L9 Minimum Shoreline Length: 500 ERROR - Skipping L9 2024-10-24-22-20-33 due to cloud cover percentage exceeding cloud threshold: 46.99% > 10.00%. ERROR - Skipping L9 2024-11-25-22-20-39 due to cloud cover percentage exceeding cloud threshold: 15.81% > 10.00%. ERROR - Skipping L9 2024-12-02-22-26-48 due to cloud cover percentage exceeding cloud threshold: 94.00% > 10.00%. INFO - Processing image L9 2024-12-18-22-26-19 INFO - L9 2024-12-18-22-26-19 cloud cover : 2.04% INFO - L9 2024-12-18-22-26-19: sand: 0.00% ,whitewater: 0.03% ,water: 53.90% INFO - L9 2024-12-18-22-26-19: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 22 shorelines. Number of shorelines after filtering shorelines: 6 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 1069 INFO - Number of shoreline points after removing points within 300m of cloud mask 742 INFO - Number of shoreline points before removing points within 30m of no data pixel 742 INFO - Number of shoreline points after removing points within 30m of no data pixel 742 INFO - Processing image L9 2024-12-18-22-26-43 INFO - L9 2024-12-18-22-26-43 cloud cover : 1.01% INFO - L9 2024-12-18-22-26-43: sand: 0.00% ,whitewater: 0.03% ,water: 54.41% INFO - L9 2024-12-18-22-26-43: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 23 shorelines. Number of shorelines after filtering shorelines: 4 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 1257 INFO - Number of shoreline points after removing points within 300m of cloud mask 1030 INFO - Number of shoreline points before removing points within 30m of no data pixel 1030 INFO - Number of shoreline points after removing points within 30m of no data pixel 1030 INFO - Processing image L9 2024-12-27-22-20-33 INFO - L9 2024-12-27-22-20-33 cloud cover : 0.00% INFO - L9 2024-12-27-22-20-33: sand: 0.00% ,whitewater: 0.00% ,water: 0.04% INFO - L9 2024-12-27-22-20-33: 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: 0 shorelines INFO - Processing image L9 2025-01-03-22-26-15 INFO - L9 2025-01-03-22-26-15 cloud cover : 0.00% INFO - L9 2025-01-03-22-26-15: sand: 0.00% ,whitewater: 0.40% ,water: 54.82% INFO - L9 2025-01-03-22-26-15: 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 1657 INFO - Number of shoreline points after removing points within 300m of cloud mask 1657 INFO - Number of shoreline points before removing points within 30m of no data pixel 1657 INFO - Number of shoreline points after removing points within 30m of no data pixel 1657 INFO - Processing image L9 2025-01-03-22-26-39 INFO - L9 2025-01-03-22-26-39 cloud cover : 0.00% INFO - L9 2025-01-03-22-26-39: sand: 0.00% ,whitewater: 0.42% ,water: 54.78% INFO - L9 2025-01-03-22-26-39: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 13 shorelines. Number of shorelines after filtering shorelines: 4 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 1655 INFO - Number of shoreline points after removing points within 300m of cloud mask 1655 INFO - Number of shoreline points before removing points within 30m of no data pixel 1655 INFO - Number of shoreline points after removing points within 30m of no data pixel 1655 INFO - Processing image L9 2025-01-12-22-20-33 INFO - L9 2025-01-12-22-20-33 cloud cover : 0.00% INFO - L9 2025-01-12-22-20-33: sand: 0.00% ,whitewater: 0.00% ,water: 2.35% INFO - L9 2025-01-12-22-20-33: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 ERROR - L9 2025-01-12-22-20-33: 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 2025-01-19-22-26-22 INFO - L9 2025-01-19-22-26-22 cloud cover : 0.84% INFO - L9 2025-01-19-22-26-22: sand: 0.00% ,whitewater: 0.11% ,water: 54.71% INFO - L9 2025-01-19-22-26-22: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 21 shorelines. Number of shorelines after filtering shorelines: 5 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 1357 INFO - Number of shoreline points after removing points within 300m of cloud mask 1117 INFO - Number of shoreline points before removing points within 30m of no data pixel 1117 INFO - Number of shoreline points after removing points within 30m of no data pixel 1117 INFO - Processing image L9 2025-01-19-22-26-46 INFO - L9 2025-01-19-22-26-46 cloud cover : 0.21% INFO - L9 2025-01-19-22-26-46: sand: 0.00% ,whitewater: 0.12% ,water: 55.07% INFO - L9 2025-01-19-22-26-46: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 16 shorelines. Number of shorelines after filtering shorelines: 4 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 1659 INFO - Number of shoreline points after removing points within 300m of cloud mask 1659 INFO - Number of shoreline points before removing points within 30m of no data pixel 1659 INFO - Number of shoreline points after removing points within 30m of no data pixel 1659 INFO - Processing image L9 2025-02-13-22-20-34 INFO - L9 2025-02-13-22-20-34 cloud cover : 0.00% INFO - L9 2025-02-13-22-20-34: sand: 0.00% ,whitewater: 0.00% ,water: 6.94% INFO - L9 2025-02-13-22-20-34: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 10 shorelines. Number of shorelines after filtering shorelines: 2 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 121 INFO - Number of shoreline points after removing points within 300m of cloud mask 121 INFO - Number of shoreline points before removing points within 30m of no data pixel 121 INFO - Number of shoreline points after removing points within 30m of no data pixel 120 INFO - Processing image L9 2025-02-20-22-26-20 INFO - L9 2025-02-20-22-26-20 cloud cover : 1.12% INFO - L9 2025-02-20-22-26-20: sand: 0.00% ,whitewater: 0.48% ,water: 54.79% INFO - L9 2025-02-20-22-26-20: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 16 shorelines. Number of shorelines after filtering shorelines: 3 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 1479 INFO - Number of shoreline points after removing points within 300m of cloud mask 1336 INFO - Number of shoreline points before removing points within 30m of no data pixel 1336 INFO - Number of shoreline points after removing points within 30m of no data pixel 1336 INFO - Processing image L9 2025-02-20-22-26-44 INFO - L9 2025-02-20-22-26-44 cloud cover : 1.02% INFO - L9 2025-02-20-22-26-44: sand: 0.00% ,whitewater: 0.50% ,water: 54.77% INFO - L9 2025-02-20-22-26-44: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 16 shorelines. Number of shorelines after filtering shorelines: 3 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 1479 INFO - Number of shoreline points after removing points within 300m of cloud mask 1332 INFO - Number of shoreline points before removing points within 30m of no data pixel 1332 INFO - Number of shoreline points after removing points within 30m of no data pixel 1332