2025-12-01 09:02:24,307 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC08/C02/T1_TOA/LC08_076091_20251111 as 2025-11-11-22-26-49_L8_nzd0452_ms.tif 2025-12-01 09:02:33,254 - satellite_download_logger - ERROR - Could not save metadata for LANDSAT/LC09/C02/T1_TOA/LC09_076090_20251119 that failed. Failed to open the image file data/nzd0452/L9/ms/2025-11-19-22-26-28_L9_nzd0452_ms.tif 2025-12-01 09:02:41,993 - satellite_download_logger - ERROR - Could not save metadata for LANDSAT/LC09/C02/T1_TOA/LC09_076091_20251103 that failed. Failed to open the image file data/nzd0452/L9/ms/2025-11-03-22-26-54_L9_nzd0452_ms.tif 2025-12-01 09:02:48,641 - satellite_download_logger - ERROR - Could not save metadata for LANDSAT/LC09/C02/T1_TOA/LC09_076091_20251119 that failed. Failed to open the image file data/nzd0452/L9/ms/2025-11-19-22-26-52_L9_nzd0452_ms.tif 2025-12-01 09:02:48,680 - satellite_download_logger - INFO - Please read the following information carefully: 2025-12-01 09:02:48,680 - 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. 2025-12-01 09:02:48,680 - 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. 2025-12-01 09:02:48,680 - satellite_download_logger - INFO - --------------------------------------------------------------------------------------------------------------------- 2025-12-01 09:02:48,681 - satellite_download_logger - INFO - Extracting shorelines for L5 Minimum Shoreline Length: 500 2025-12-01 09:02:48,683 - satellite_download_logger - INFO - WARNING: CoastSat has hard-coded the value for the minimum shoreline length for L7 to 200 2025-12-01 09:02:48,683 - satellite_download_logger - INFO - Extracting shorelines for L7 Minimum Shoreline Length: 200 2025-12-01 09:02:48,684 - satellite_download_logger - INFO - Extracting shorelines for L8 Minimum Shoreline Length: 500 2025-12-01 09:02:48,691 - satellite_download_logger - INFO - L8 2025-11-04-22-20-41 cloud cover : 0.00% 2025-12-01 09:02:48,766 - satellite_download_logger - INFO - L8 2025-11-04-22-20-41: sand: 0.00% ,whitewater: 0.00% ,water: 0.00% 2025-12-01 09:02:48,766 - satellite_download_logger - INFO - L8 2025-11-04-22-20-41: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-12-01 09:02:48,773 - satellite_download_logger - ERROR - L8 2025-11-04-22-20-41: 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. 2025-12-01 09:02:48,840 - satellite_download_logger - INFO - L8 2025-11-11-22-26-49 cloud cover : 0.00% 2025-12-01 09:02:49,483 - satellite_download_logger - INFO - L8 2025-11-11-22-26-49: sand: 0.00% ,whitewater: 0.25% ,water: 54.98% 2025-12-01 09:02:49,490 - satellite_download_logger - INFO - L8 2025-11-11-22-26-49: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-12-01 09:02:49,516 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 16 shorelines. Number of shorelines after filtering shorelines: 4 shorelines 2025-12-01 09:02:49,517 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 1593 2025-12-01 09:02:49,517 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 1593 2025-12-01 09:02:49,517 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 1593 2025-12-01 09:02:49,579 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 1593 2025-12-01 09:02:49,966 - satellite_download_logger - INFO - Extracting shorelines for L9 Minimum Shoreline Length: 500