2025-07-01 00:05:42,546 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC08/C02/T1_TOA/LC08_074091_20250606 as 2025-06-06-22-13-42_L8_nzd0474_ms.tif 2025-07-01 00:05:49,386 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC08/C02/T1_TOA/LC08_074092_20250606 as 2025-06-06-22-14-06_L8_nzd0474_ms.tif 2025-07-01 00:05:54,001 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC08/C02/T1_TOA/LC08_075091_20250613 as 2025-06-13-22-20-00_L8_nzd0474_ms.tif 2025-07-01 00:05:54,034 - satellite_download_logger - INFO - Please read the following information carefully: 2025-07-01 00:05:54,034 - 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 00:05:54,034 - 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 00:05:54,034 - satellite_download_logger - INFO - --------------------------------------------------------------------------------------------------------------------- 2025-07-01 00:05:54,036 - satellite_download_logger - INFO - Extracting shorelines for L5 Minimum Shoreline Length: 500 2025-07-01 00:05:54,037 - satellite_download_logger - INFO - WARNING: CoastSat has hard-coded the value for the minimum shoreline length for L7 to 200 2025-07-01 00:05:54,037 - satellite_download_logger - INFO - Extracting shorelines for L7 Minimum Shoreline Length: 200 2025-07-01 00:05:54,039 - satellite_download_logger - INFO - Extracting shorelines for L8 Minimum Shoreline Length: 500 2025-07-01 00:05:54,082 - satellite_download_logger - INFO - L8 2025-06-06-22-13-42 cloud cover : 0.00% 2025-07-01 00:05:54,345 - satellite_download_logger - INFO - L8 2025-06-06-22-13-42: sand: 0.00% ,whitewater: 5.82% ,water: 46.11% 2025-07-01 00:05:54,348 - satellite_download_logger - INFO - L8 2025-06-06-22-13-42: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-07-01 00:05:54,353 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 20 shorelines. Number of shorelines after filtering shorelines: 2 shorelines 2025-07-01 00:05:54,353 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 609 2025-07-01 00:05:54,353 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 609 2025-07-01 00:05:54,353 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 609 2025-07-01 00:05:54,367 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 607 2025-07-01 00:05:55,258 - satellite_download_logger - INFO - L8 2025-06-06-22-14-06 cloud cover : 0.00% 2025-07-01 00:05:55,529 - satellite_download_logger - INFO - L8 2025-06-06-22-14-06: sand: 0.00% ,whitewater: 4.58% ,water: 47.42% 2025-07-01 00:05:55,531 - satellite_download_logger - INFO - L8 2025-06-06-22-14-06: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-07-01 00:05:55,534 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 9 shorelines. Number of shorelines after filtering shorelines: 1 shorelines 2025-07-01 00:05:55,534 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 293 2025-07-01 00:05:55,534 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 293 2025-07-01 00:05:55,534 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 293 2025-07-01 00:05:55,691 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 290 2025-07-01 00:05:56,060 - satellite_download_logger - INFO - L8 2025-06-13-22-20-00 cloud cover : 0.00% 2025-07-01 00:05:56,185 - satellite_download_logger - INFO - L8 2025-06-13-22-20-00: sand: 0.00% ,whitewater: 0.00% ,water: 0.40% 2025-07-01 00:05:56,185 - satellite_download_logger - INFO - L8 2025-06-13-22-20-00: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-07-01 00:05:56,188 - satellite_download_logger - ERROR - L8 2025-06-13-22-20-00: 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 00:05:56,189 - satellite_download_logger - INFO - Extracting shorelines for L9 Minimum Shoreline Length: 500 2025-07-01 00:05:56,323 - satellite_download_logger - WARNING - L9 2025-06-14-22-13-47: Skipped due to cloud cover 29.18% > threshold 10.00% 2025-07-01 00:05:56,348 - satellite_download_logger - WARNING - L9 2025-06-14-22-14-10: Skipped due to cloud cover 53.08% > threshold 10.00%