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 2024-12-03-22-20-32 INFO - L8 2024-12-03-22-20-32 cloud cover : 0.00% INFO - L8 2024-12-03-22-20-32: sand: 0.00% ,whitewater: 0.00% ,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 ERROR - L8 2024-12-03-22-20-32: 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 2025-01-04-22-20-26 INFO - L8 2025-01-04-22-20-26 cloud cover : 0.00% INFO - L8 2025-01-04-22-20-26: sand: 0.54% ,whitewater: 1.32% ,water: 15.22% INFO - L8 2025-01-04-22-20-26: Greater than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours2 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 306 INFO - Number of shoreline points after removing points within 300m of cloud mask 306 INFO - Number of shoreline points before removing points within 30m of no data pixel 306 INFO - Number of shoreline points after removing points within 30m of no data pixel 302 INFO - Processing image L8 2025-01-20-22-20-25 INFO - L8 2025-01-20-22-20-25 cloud cover : 0.14% INFO - L8 2025-01-20-22-20-25: sand: 0.00% ,whitewater: 0.01% ,water: 0.26% INFO - L8 2025-01-20-22-20-25: 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 329 INFO - Number of shoreline points after removing points within 300m of cloud mask 329 INFO - Number of shoreline points before removing points within 30m of no data pixel 329 INFO - Number of shoreline points after removing points within 30m of no data pixel 325 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 INFO - Number of shorelines before removing shorelines < 500m: 1 shorelines. Number of shorelines after filtering shorelines: 0 shorelines INFO - Extracting shorelines for L9 Minimum Shoreline Length: 500 ERROR - Skipping L9 2024-11-18-22-14-22 due to cloud cover percentage exceeding cloud threshold: 65.54% > 10.00%. ERROR - Skipping L9 2024-11-18-22-14-46 due to cloud cover percentage exceeding cloud threshold: 79.96% > 10.00%. INFO - Processing image L9 2024-12-04-22-14-24 INFO - L9 2024-12-04-22-14-24 cloud cover : 0.81% INFO - L9 2024-12-04-22-14-24: sand: 0.06% ,whitewater: 0.14% ,water: 49.82% INFO - L9 2024-12-04-22-14-24: Greater than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours2 INFO - Number of shorelines before removing shorelines < 500m: 2 shorelines. Number of shorelines after filtering shorelines: 2 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 470 INFO - Number of shoreline points after removing points within 300m of cloud mask 409 INFO - Number of shoreline points before removing points within 30m of no data pixel 409 INFO - Number of shoreline points after removing points within 30m of no data pixel 408 INFO - Processing image L9 2024-12-04-22-14-48 INFO - L9 2024-12-04-22-14-48 cloud cover : 0.00% INFO - L9 2024-12-04-22-14-48: sand: 0.06% ,whitewater: 0.16% ,water: 51.82% INFO - L9 2024-12-04-22-14-48: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 1 shorelines. Number of shorelines after filtering shorelines: 1 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 238 INFO - Number of shoreline points after removing points within 300m of cloud mask 238 INFO - Number of shoreline points before removing points within 30m of no data pixel 238 INFO - Number of shoreline points after removing points within 30m of no data pixel 234 INFO - Processing image L9 2024-12-11-22-20-29 INFO - L9 2024-12-11-22-20-29 cloud cover : 5.02% INFO - L9 2024-12-11-22-20-29: sand: 0.00% ,whitewater: 0.00% ,water: 0.00% INFO - L9 2024-12-11-22-20-29: 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: 1 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 67 INFO - Number of shoreline points after removing points within 300m of cloud mask 67 INFO - Number of shoreline points before removing points within 30m of no data pixel 67 INFO - Number of shoreline points after removing points within 30m of no data pixel 66 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: 0.00% 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: 5 shorelines. Number of shorelines after filtering shorelines: 0 shorelines INFO - Processing image L9 2025-01-05-22-14-18 INFO - L9 2025-01-05-22-14-18 cloud cover : 0.00% INFO - L9 2025-01-05-22-14-18: sand: 0.29% ,whitewater: 1.95% ,water: 48.46% INFO - L9 2025-01-05-22-14-18: Greater than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours2 INFO - Number of shorelines before removing shorelines < 500m: 1 shorelines. Number of shorelines after filtering shorelines: 1 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 524 INFO - Number of shoreline points after removing points within 300m of cloud mask 524 INFO - Number of shoreline points before removing points within 30m of no data pixel 524 INFO - Number of shoreline points after removing points within 30m of no data pixel 523 INFO - Processing image L9 2025-01-05-22-14-42 INFO - L9 2025-01-05-22-14-42 cloud cover : 0.00% INFO - L9 2025-01-05-22-14-42: sand: 0.34% ,whitewater: 1.42% ,water: 50.20% INFO - L9 2025-01-05-22-14-42: Greater than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours2 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 308 INFO - Number of shoreline points after removing points within 300m of cloud mask 308 INFO - Number of shoreline points before removing points within 30m of no data pixel 308 INFO - Number of shoreline points after removing points within 30m of no data pixel 305 INFO - Processing image L9 2025-01-12-22-20-33 INFO - L9 2025-01-12-22-20-33 cloud cover : 0.20% INFO - L9 2025-01-12-22-20-33: sand: 0.00% ,whitewater: 0.70% ,water: 0.08% INFO - L9 2025-01-12-22-20-33: 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: 1 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 71 INFO - Number of shoreline points after removing points within 300m of cloud mask 71 INFO - Number of shoreline points before removing points within 30m of no data pixel 71 INFO - Number of shoreline points after removing points within 30m of no data pixel 67 INFO - Processing image L9 2025-01-21-22-14-25 INFO - L9 2025-01-21-22-14-25 cloud cover : 0.00% INFO - L9 2025-01-21-22-14-25: sand: 0.21% ,whitewater: 0.01% ,water: 50.46% INFO - L9 2025-01-21-22-14-25: Greater than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours2 INFO - Number of shorelines before removing shorelines < 500m: 1 shorelines. Number of shorelines after filtering shorelines: 1 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 524 INFO - Number of shoreline points after removing points within 300m of cloud mask 524 INFO - Number of shoreline points before removing points within 30m of no data pixel 524 INFO - Number of shoreline points after removing points within 30m of no data pixel 521 INFO - Processing image L9 2025-01-21-22-14-48 INFO - L9 2025-01-21-22-14-48 cloud cover : 0.00% INFO - L9 2025-01-21-22-14-48: sand: 0.19% ,whitewater: 0.01% ,water: 52.26% INFO - L9 2025-01-21-22-14-48: Greater than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours2 INFO - Number of shorelines before removing shorelines < 500m: 1 shorelines. Number of shorelines after filtering shorelines: 1 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 257 INFO - Number of shoreline points after removing points within 300m of cloud mask 257 INFO - Number of shoreline points before removing points within 30m of no data pixel 257 INFO - Number of shoreline points after removing points within 30m of no data pixel 253 ERROR - Skipping L9 2025-01-28-22-20-30 due to cloud cover percentage exceeding cloud threshold: 22.80% > 10.00%. ERROR - Skipping L9 2025-02-22-22-14-21 due to cloud cover percentage exceeding cloud threshold: 47.94% > 10.00%. ERROR - Skipping L9 2025-02-22-22-14-45 due to cloud cover percentage exceeding cloud threshold: 61.53% > 10.00%. INFO - Processing image L9 2025-03-01-22-20-27 INFO - L9 2025-03-01-22-20-27 cloud cover : 0.00% INFO - L9 2025-03-01-22-20-27: sand: 0.21% ,whitewater: 0.21% ,water: 7.99% INFO - L9 2025-03-01-22-20-27: Greater than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours2 INFO - Number of shorelines before removing shorelines < 500m: 1 shorelines. Number of shorelines after filtering shorelines: 1 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 195 INFO - Number of shoreline points after removing points within 300m of cloud mask 195 INFO - Number of shoreline points before removing points within 30m of no data pixel 195 INFO - Number of shoreline points after removing points within 30m of no data pixel 189