2025-10-20 09:56:07,472 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC08/C02/T1_TOA/LC08_074089_20250926 as 2025-09-26-22-13-38_L8_nzd0345_ms.tif 2025-10-20 09:56:12,861 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC09/C02/T1_TOA/LC09_074088_20251004 as 2025-10-04-22-13-17_L9_nzd0345_ms.tif 2025-10-20 09:56:22,180 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC09/C02/T1_TOA/LC09_074089_20251004 as 2025-10-04-22-13-41_L9_nzd0345_ms.tif 2025-10-20 09:56:29,590 - satellite_download_logger - ERROR - Could not save metadata for LANDSAT/LC09/C02/T1_TOA/LC09_075089_20251011 that failed. Failed to open the image file data/nzd0345/L9/ms/2025-10-11-22-19-57_L9_nzd0345_ms.tif 2025-10-20 09:56:29,638 - satellite_download_logger - INFO - Please read the following information carefully: 2025-10-20 09:56:29,638 - 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. 2025-10-20 09:56:29,638 - 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. 2025-10-20 09:56:29,638 - satellite_download_logger - INFO - --------------------------------------------------------------------------------------------------------------------- 2025-10-20 09:56:29,640 - satellite_download_logger - INFO - Extracting shorelines for L5 Minimum Shoreline Length: 500 2025-10-20 09:56:29,645 - satellite_download_logger - INFO - WARNING: CoastSat has hard-coded the value for the minimum shoreline length for L7 to 200 2025-10-20 09:56:29,645 - satellite_download_logger - INFO - Extracting shorelines for L7 Minimum Shoreline Length: 200 2025-10-20 09:56:29,649 - satellite_download_logger - INFO - Extracting shorelines for L8 Minimum Shoreline Length: 500 2025-10-20 09:56:29,763 - satellite_download_logger - WARNING - L8 2025-09-26-22-13-38: Skipped due to cloud cover 16.06% > threshold 10.00% 2025-10-20 09:56:29,767 - satellite_download_logger - INFO - Extracting shorelines for L9 Minimum Shoreline Length: 500 2025-10-20 09:56:29,772 - satellite_download_logger - INFO - L9 2025-10-04-22-13-17 cloud cover : 0.00% 2025-10-20 09:56:29,779 - satellite_download_logger - INFO - L9 2025-10-04-22-13-17: sand: 0.00% ,whitewater: 0.00% ,water: 0.00% 2025-10-20 09:56:29,779 - satellite_download_logger - INFO - L9 2025-10-04-22-13-17: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-10-20 09:56:29,781 - satellite_download_logger - ERROR - L9 2025-10-04-22-13-17: 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. 2025-10-20 09:56:29,842 - satellite_download_logger - INFO - L9 2025-10-04-22-13-41 cloud cover : 0.00% 2025-10-20 09:56:30,160 - satellite_download_logger - INFO - L9 2025-10-04-22-13-41: sand: 0.20% ,whitewater: 17.50% ,water: 44.81% 2025-10-20 09:56:30,165 - satellite_download_logger - INFO - L9 2025-10-04-22-13-41: Greater than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours2 2025-10-20 09:56:30,185 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 39 shorelines. Number of shorelines after filtering shorelines: 8 shorelines 2025-10-20 09:56:30,185 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 2119 2025-10-20 09:56:30,185 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 2119 2025-10-20 09:56:30,185 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 2119 2025-10-20 09:56:30,185 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 2119