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 L9 Minimum Shoreline Length: 500 INFO - Processing image L9 2021-12-26-22-27-15 INFO - L9 2021-12-26-22-27-15 cloud cover : 0.00% INFO - L9 2021-12-26-22-27-15: sand: 0.00% ,whitewater: 11.53% ,water: 41.84% INFO - L9 2021-12-26-22-27-15: 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 401 INFO - Number of shoreline points after removing points within 300m of cloud mask 401 INFO - Number of shoreline points before removing points within 30m of no data pixel 401 INFO - Number of shoreline points after removing points within 30m of no data pixel 401 INFO - Processing image L9 2022-01-27-22-27-14 INFO - L9 2022-01-27-22-27-14 cloud cover : 0.00% INFO - L9 2022-01-27-22-27-14: sand: 0.00% ,whitewater: 1.65% ,water: 52.20% INFO - L9 2022-01-27-22-27-14: 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 410 INFO - Number of shoreline points after removing points within 300m of cloud mask 410 INFO - Number of shoreline points before removing points within 30m of no data pixel 410 INFO - Number of shoreline points after removing points within 30m of no data pixel 410 INFO - Processing image L9 2022-04-17-22-26-46 INFO - L9 2022-04-17-22-26-46 cloud cover : 0.00% INFO - L9 2022-04-17-22-26-46: sand: 0.00% ,whitewater: 4.08% ,water: 49.86% INFO - L9 2022-04-17-22-26-46: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 1 shorelines. Number of shorelines after filtering shorelines: 1 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 410 INFO - Number of shoreline points after removing points within 300m of cloud mask 410 INFO - Number of shoreline points before removing points within 30m of no data pixel 410 INFO - Number of shoreline points after removing points within 30m of no data pixel 410 INFO - Processing image L9 2022-05-03-22-26-41 INFO - L9 2022-05-03-22-26-41 cloud cover : 0.00% INFO - L9 2022-05-03-22-26-41: sand: 0.00% ,whitewater: 3.60% ,water: 50.06% INFO - L9 2022-05-03-22-26-41: 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 402 INFO - Number of shoreline points after removing points within 300m of cloud mask 402 INFO - Number of shoreline points before removing points within 30m of no data pixel 402 INFO - Number of shoreline points after removing points within 30m of no data pixel 402 INFO - Processing image L9 2022-05-28-22-20-18 INFO - L9 2022-05-28-22-20-18 cloud cover : 0.00% INFO - L9 2022-05-28-22-20-18: sand: 0.00% ,whitewater: 0.00% ,water: 1.70% INFO - L9 2022-05-28-22-20-18: 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 - Processing image L9 2022-05-28-22-20-42 INFO - L9 2022-05-28-22-20-42 cloud cover : 0.00% INFO - L9 2022-05-28-22-20-42: sand: 0.00% ,whitewater: 0.40% ,water: 7.89% INFO - L9 2022-05-28-22-20-42: 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 ERROR - Skipping L9 2022-06-20-22-26-43 due to cloud cover percentage exceeding cloud threshold: 27.07% > 10.00%. INFO - Processing image L9 2022-06-29-22-20-40 INFO - L9 2022-06-29-22-20-40 cloud cover : 0.00% INFO - L9 2022-06-29-22-20-40: sand: 0.00% ,whitewater: 0.00% ,water: 0.00% INFO - L9 2022-06-29-22-20-40: 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: 1 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 41 INFO - Number of shoreline points after removing points within 300m of cloud mask 41 INFO - Number of shoreline points before removing points within 30m of no data pixel 41 INFO - Number of shoreline points after removing points within 30m of no data pixel 41 INFO - Processing image L9 2022-08-07-22-27-06 INFO - L9 2022-08-07-22-27-06 cloud cover : 2.05% INFO - L9 2022-08-07-22-27-06: sand: 0.00% ,whitewater: 1.66% ,water: 51.43% INFO - L9 2022-08-07-22-27-06: 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 319 INFO - Number of shoreline points after removing points within 300m of cloud mask 292 INFO - Number of shoreline points before removing points within 30m of no data pixel 292 INFO - Number of shoreline points after removing points within 30m of no data pixel 292 INFO - Processing image L9 2022-08-16-22-20-59 INFO - L9 2022-08-16-22-20-59 cloud cover : 0.00% INFO - L9 2022-08-16-22-20-59: sand: 0.00% ,whitewater: 0.00% ,water: 0.00% INFO - L9 2022-08-16-22-20-59: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 3 shorelines. Number of shorelines after filtering shorelines: 0 shorelines INFO - Processing image L9 2022-08-16-22-21-23 INFO - L9 2022-08-16-22-21-23 cloud cover : 0.00% INFO - L9 2022-08-16-22-21-23: sand: 0.00% ,whitewater: 0.00% ,water: 0.00% INFO - L9 2022-08-16-22-21-23: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 3 shorelines. Number of shorelines after filtering shorelines: 0 shorelines ERROR - Skipping L9 2022-08-23-22-27-12 due to cloud cover percentage exceeding cloud threshold: 94.68% > 10.00%. INFO - Processing image L9 2022-09-08-22-27-11 INFO - L9 2022-09-08-22-27-11 cloud cover : 0.00% INFO - L9 2022-09-08-22-27-11: sand: 0.00% ,whitewater: 1.12% ,water: 53.64% INFO - L9 2022-09-08-22-27-11: 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 408 INFO - Number of shoreline points after removing points within 300m of cloud mask 408 INFO - Number of shoreline points before removing points within 30m of no data pixel 408 INFO - Number of shoreline points after removing points within 30m of no data pixel 408 ERROR - Skipping L9 2022-10-10-22-27-22 due to cloud cover percentage exceeding cloud threshold: 39.97% > 10.00%. ERROR - Skipping L9 2022-11-27-22-27-24 due to cloud cover percentage exceeding cloud threshold: 30.96% > 10.00%. ERROR - Skipping L9 2022-12-13-22-27-25 due to cloud cover percentage exceeding cloud threshold: 14.57% > 10.00%. INFO - Processing image L9 2022-12-29-22-27-24 INFO - L9 2022-12-29-22-27-24 cloud cover : 0.00% INFO - L9 2022-12-29-22-27-24: sand: 0.00% ,whitewater: 3.02% ,water: 49.67% INFO - L9 2022-12-29-22-27-24: 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 403 INFO - Number of shoreline points after removing points within 300m of cloud mask 403 INFO - Number of shoreline points before removing points within 30m of no data pixel 403 INFO - Number of shoreline points after removing points within 30m of no data pixel 403 INFO - Processing image L9 2023-01-14-22-27-21 INFO - L9 2023-01-14-22-27-21 cloud cover : 1.71% INFO - L9 2023-01-14-22-27-21: sand: 0.00% ,whitewater: 1.24% ,water: 50.93% INFO - L9 2023-01-14-22-27-21: 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 376 INFO - Number of shoreline points after removing points within 300m of cloud mask 347 INFO - Number of shoreline points before removing points within 30m of no data pixel 347 INFO - Number of shoreline points after removing points within 30m of no data pixel 347 ERROR - Skipping L9 2023-01-30-22-27-25 due to cloud cover percentage exceeding cloud threshold: 64.67% > 10.00%. INFO - Processing image L9 2023-02-08-22-21-18 INFO - L9 2023-02-08-22-21-18 cloud cover : 0.00% INFO - L9 2023-02-08-22-21-18: sand: 0.00% ,whitewater: 8.20% ,water: 0.00% INFO - L9 2023-02-08-22-21-18: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 ERROR - L9 2023-02-08-22-21-18: 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. INFO - Processing image L9 2023-02-08-22-21-42 INFO - L9 2023-02-08-22-21-42 cloud cover : 0.00% INFO - L9 2023-02-08-22-21-42: sand: 0.00% ,whitewater: 19.88% ,water: 0.00% INFO - L9 2023-02-08-22-21-42: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 ERROR - L9 2023-02-08-22-21-42: 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 L9 2023-05-06-22-26-37 due to cloud cover percentage exceeding cloud threshold: 70.22% > 10.00%. INFO - Processing image L9 2023-06-07-22-26-23 INFO - L9 2023-06-07-22-26-23 cloud cover : 0.00% INFO - L9 2023-06-07-22-26-23: sand: 0.00% ,whitewater: 0.00% ,water: 1.99% INFO - L9 2023-06-07-22-26-23: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 38 shorelines. Number of shorelines after filtering shorelines: 2 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 224 INFO - Number of shoreline points after removing points within 300m of cloud mask 224 INFO - Number of shoreline points before removing points within 30m of no data pixel 224 INFO - Number of shoreline points after removing points within 30m of no data pixel 224 INFO - Processing image L9 2023-06-16-22-20-06 INFO - L9 2023-06-16-22-20-06 cloud cover : 0.00% INFO - L9 2023-06-16-22-20-06: sand: 0.00% ,whitewater: 0.00% ,water: 8.68% INFO - L9 2023-06-16-22-20-06: 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 - Processing image L9 2023-06-16-22-20-30 INFO - L9 2023-06-16-22-20-30 cloud cover : 0.00% INFO - L9 2023-06-16-22-20-30: sand: 0.00% ,whitewater: 0.00% ,water: 27.32% INFO - L9 2023-06-16-22-20-30: 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 - Processing image L9 2023-06-23-22-26-17 INFO - L9 2023-06-23-22-26-17 cloud cover : 7.60% INFO - L9 2023-06-23-22-26-17: sand: 0.00% ,whitewater: 0.49% ,water: 50.63% INFO - L9 2023-06-23-22-26-17: 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: 2 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 196 INFO - Number of shoreline points after removing points within 300m of cloud mask 116 INFO - Number of shoreline points before removing points within 30m of no data pixel 116 INFO - Number of shoreline points after removing points within 30m of no data pixel 116 INFO - Processing image L9 2023-07-02-22-20-17 INFO - L9 2023-07-02-22-20-17 cloud cover : 0.00% INFO - L9 2023-07-02-22-20-17: sand: 0.00% ,whitewater: 0.00% ,water: 64.78% INFO - L9 2023-07-02-22-20-17: 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 72 INFO - Number of shoreline points after removing points within 300m of cloud mask 72 INFO - Number of shoreline points before removing points within 30m of no data pixel 72 INFO - Number of shoreline points after removing points within 30m of no data pixel 70 INFO - Processing image L9 2023-07-02-22-20-41 INFO - L9 2023-07-02-22-20-41 cloud cover : 0.00% INFO - L9 2023-07-02-22-20-41: sand: 0.00% ,whitewater: 0.08% ,water: 33.65% INFO - L9 2023-07-02-22-20-41: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 0 shorelines. Number of shorelines after filtering shorelines: 0 shorelines INFO - Processing image L9 2023-07-09-22-26-32 INFO - L9 2023-07-09-22-26-32 cloud cover : 0.00% INFO - L9 2023-07-09-22-26-32: sand: 0.00% ,whitewater: 0.00% ,water: 2.06% INFO - L9 2023-07-09-22-26-32: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 42 shorelines. Number of shorelines after filtering shorelines: 6 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 399 INFO - Number of shoreline points after removing points within 300m of cloud mask 399 INFO - Number of shoreline points before removing points within 30m of no data pixel 399 INFO - Number of shoreline points after removing points within 30m of no data pixel 399 ERROR - Skipping L9 2023-07-25-22-26-33 due to cloud cover percentage exceeding cloud threshold: 70.75% > 10.00%. ERROR - Skipping L9 2023-08-26-22-26-52 due to cloud cover percentage exceeding cloud threshold: 91.44% > 10.00%. INFO - Processing image L9 2023-10-29-22-27-09 INFO - L9 2023-10-29-22-27-09 cloud cover : 0.00% INFO - L9 2023-10-29-22-27-09: sand: 0.00% ,whitewater: 0.75% ,water: 53.16% INFO - L9 2023-10-29-22-27-09: 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 404 INFO - Number of shoreline points after removing points within 300m of cloud mask 404 INFO - Number of shoreline points before removing points within 30m of no data pixel 404 INFO - Number of shoreline points after removing points within 30m of no data pixel 404 ERROR - Skipping L9 2023-11-14-22-27-08 due to cloud cover percentage exceeding cloud threshold: 54.06% > 10.00%. INFO - Processing image L9 2023-11-30-22-27-16 INFO - L9 2023-11-30-22-27-16 cloud cover : 1.43% INFO - L9 2023-11-30-22-27-16: sand: 0.12% ,whitewater: 2.22% ,water: 49.73% INFO - L9 2023-11-30-22-27-16: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 3 shorelines. Number of shorelines after filtering shorelines: 2 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 373 INFO - Number of shoreline points after removing points within 300m of cloud mask 346 INFO - Number of shoreline points before removing points within 30m of no data pixel 346 INFO - Number of shoreline points after removing points within 30m of no data pixel 346 INFO - Processing image L9 2024-01-17-22-27-14 INFO - L9 2024-01-17-22-27-14 cloud cover : 0.00% INFO - L9 2024-01-17-22-27-14: sand: 0.12% ,whitewater: 2.42% ,water: 50.41% INFO - L9 2024-01-17-22-27-14: 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 403 INFO - Number of shoreline points after removing points within 300m of cloud mask 403 INFO - Number of shoreline points before removing points within 30m of no data pixel 403 INFO - Number of shoreline points after removing points within 30m of no data pixel 403 INFO - Processing image L9 2024-02-18-22-27-08 INFO - L9 2024-02-18-22-27-08 cloud cover : 0.41% INFO - L9 2024-02-18-22-27-08: sand: 0.00% ,whitewater: 11.99% ,water: 42.52% INFO - L9 2024-02-18-22-27-08: 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 415 INFO - Number of shoreline points after removing points within 300m of cloud mask 415 INFO - Number of shoreline points before removing points within 30m of no data pixel 415 INFO - Number of shoreline points after removing points within 30m of no data pixel 415 INFO - Processing image L9 2024-05-08-22-26-34 INFO - L9 2024-05-08-22-26-34 cloud cover : 0.00% INFO - L9 2024-05-08-22-26-34: sand: 0.00% ,whitewater: 11.40% ,water: 42.69% INFO - L9 2024-05-08-22-26-34: 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 408 INFO - Number of shoreline points after removing points within 300m of cloud mask 408 INFO - Number of shoreline points before removing points within 30m of no data pixel 408 INFO - Number of shoreline points after removing points within 30m of no data pixel 408 INFO - Processing image L9 2024-06-09-22-26-17 INFO - L9 2024-06-09-22-26-17 cloud cover : 1.73% INFO - L9 2024-06-09-22-26-17: sand: 0.00% ,whitewater: 1.38% ,water: 67.32% INFO - L9 2024-06-09-22-26-17: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 14 shorelines. Number of shorelines after filtering shorelines: 3 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 322 INFO - Number of shoreline points after removing points within 300m of cloud mask 276 INFO - Number of shoreline points before removing points within 30m of no data pixel 276 INFO - Number of shoreline points after removing points within 30m of no data pixel 276 INFO - Processing image L9 2024-07-04-22-20-03 INFO - L9 2024-07-04-22-20-03 cloud cover : 0.00% INFO - L9 2024-07-04-22-20-03: sand: 0.00% ,whitewater: 6.56% ,water: 23.98% INFO - L9 2024-07-04-22-20-03: 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 125 INFO - Number of shoreline points after removing points within 300m of cloud mask 125 INFO - Number of shoreline points before removing points within 30m of no data pixel 125 INFO - Number of shoreline points after removing points within 30m of no data pixel 123 INFO - Processing image L9 2024-07-04-22-20-27 INFO - L9 2024-07-04-22-20-27 cloud cover : 0.00% INFO - L9 2024-07-04-22-20-27: sand: 0.00% ,whitewater: 0.00% ,water: 17.81% INFO - L9 2024-07-04-22-20-27: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 ERROR - L9 2024-07-04-22-20-27: 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 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 L9 2024-07-11-22-26-22 due to cloud cover percentage exceeding cloud threshold: 39.78% > 10.00%. INFO - Processing image L9 2024-07-20-22-20-14 INFO - L9 2024-07-20-22-20-14 cloud cover : 0.00% INFO - L9 2024-07-20-22-20-14: sand: 0.00% ,whitewater: 0.00% ,water: 43.12% INFO - L9 2024-07-20-22-20-14: 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 142 INFO - Number of shoreline points after removing points within 300m of cloud mask 142 INFO - Number of shoreline points before removing points within 30m of no data pixel 142 INFO - Number of shoreline points after removing points within 30m of no data pixel 141 INFO - Processing image L9 2024-07-20-22-20-38 INFO - L9 2024-07-20-22-20-38 cloud cover : 0.00% INFO - L9 2024-07-20-22-20-38: sand: 0.00% ,whitewater: 0.00% ,water: 21.54% INFO - L9 2024-07-20-22-20-38: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 ERROR - L9 2024-07-20-22-20-38: 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. INFO - Processing image L9 2024-08-12-22-26-33 INFO - L9 2024-08-12-22-26-33 cloud cover : 0.00% INFO - L9 2024-08-12-22-26-33: sand: 0.00% ,whitewater: 4.22% ,water: 55.93% INFO - L9 2024-08-12-22-26-33: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 INFO - Number of shorelines before removing shorelines < 500m: 2 shorelines. Number of shorelines after filtering shorelines: 1 shorelines INFO - Number of shoreline points before removing points within 300m of cloud mask 341 INFO - Number of shoreline points after removing points within 300m of cloud mask 341 INFO - Number of shoreline points before removing points within 30m of no data pixel 341 INFO - Number of shoreline points after removing points within 30m of no data pixel 341