2025-07-01 00:00:41,030 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC08/C02/T1_TOA/LC08_074084_20250606 as 2025-06-06-22-10-54_L8_nzd0027_ms.tif 2025-07-01 00:00:51,581 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC08/C02/T1_TOA/LC08_075084_20250613 as 2025-06-13-22-17-12_L8_nzd0027_ms.tif 2025-07-01 00:00:57,986 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC09/C02/T1_TOA/LC09_075084_20250621 as 2025-06-21-22-17-14_L9_nzd0027_ms.tif 2025-07-01 00:00:58,149 - satellite_download_logger - INFO - Please read the following information carefully: 2025-07-01 00:00:58,149 - satellite_download_logger - 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. 2025-07-01 00:00:58,149 - satellite_download_logger - 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. 2025-07-01 00:00:58,154 - satellite_download_logger - INFO - --------------------------------------------------------------------------------------------------------------------- 2025-07-01 00:00:58,181 - satellite_download_logger - INFO - Extracting shorelines for L5 Minimum Shoreline Length: 500 2025-07-01 00:00:58,183 - satellite_download_logger - INFO - WARNING: CoastSat has hard-coded the value for the minimum shoreline length for L7 to 200 2025-07-01 00:00:58,183 - satellite_download_logger - INFO - Extracting shorelines for L7 Minimum Shoreline Length: 200 2025-07-01 00:00:58,185 - satellite_download_logger - INFO - Extracting shorelines for L8 Minimum Shoreline Length: 500 2025-07-01 00:00:58,205 - satellite_download_logger - INFO - L8 2025-06-06-22-10-54 cloud cover : 0.00% 2025-07-01 00:00:58,537 - satellite_download_logger - INFO - L8 2025-06-06-22-10-54: sand: 0.00% ,whitewater: 0.00% ,water: 0.46% 2025-07-01 00:00:58,538 - satellite_download_logger - INFO - L8 2025-06-06-22-10-54: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-07-01 00:00:58,574 - satellite_download_logger - ERROR - L8 2025-06-06-22-10-54: 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/python3.12/site-packages/coastsat/SDS_shoreline.py", line 1061, in extract_shorelines shoreline, t_mndwi = find_shoreline_optical( ^^^^^^^^^^^^^^^^^^^^^^^ File "/home/ubuntu/.local/lib/python3.12/site-packages/coastsat/SDS_shoreline.py", line 216, in find_shoreline_optical contours_mwi, t_mndwi = find_wl_contours1(im_mndwi, cloud_mask, im_ref_buffer) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/ubuntu/.local/lib/python3.12/site-packages/coastsat/SDS_shoreline.py", line 1426, in find_wl_contours1 raise ValueError("no valid pixels found in reference shoreline buffer.") ValueError: no valid pixels found in reference shoreline buffer. 2025-07-01 00:00:58,847 - satellite_download_logger - INFO - L8 2025-06-13-22-17-12 cloud cover : 2.65% 2025-07-01 00:00:59,524 - satellite_download_logger - INFO - L8 2025-06-13-22-17-12: sand: 1.02% ,whitewater: 0.10% ,water: 56.77% 2025-07-01 00:00:59,526 - satellite_download_logger - INFO - L8 2025-06-13-22-17-12: Greater than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours2 2025-07-01 00:00:59,550 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 29 shorelines. Number of shorelines after filtering shorelines: 4 shorelines 2025-07-01 00:00:59,550 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 935 2025-07-01 00:00:59,744 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 935 2025-07-01 00:00:59,744 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 935 2025-07-01 00:00:59,785 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 935 2025-07-01 00:01:00,280 - satellite_download_logger - INFO - Extracting shorelines for L9 Minimum Shoreline Length: 500 2025-07-01 00:01:00,339 - satellite_download_logger - INFO - L9 2025-06-21-22-17-14 cloud cover : 0.78% 2025-07-01 00:01:00,808 - satellite_download_logger - INFO - L9 2025-06-21-22-17-14: sand: 1.07% ,whitewater: 0.76% ,water: 55.70% 2025-07-01 00:01:00,811 - satellite_download_logger - INFO - L9 2025-06-21-22-17-14: Greater than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours2 2025-07-01 00:01:00,826 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 15 shorelines. Number of shorelines after filtering shorelines: 2 shorelines 2025-07-01 00:01:00,826 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 781 2025-07-01 00:01:00,936 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 699 2025-07-01 00:01:00,937 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 699 2025-07-01 00:01:00,985 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 699