2025-09-01 00:07:07,215 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC08/C02/T1_TOA/LC08_072088_20250726 as 2025-07-26-22-00-32_L8_nzd0347_ms.tif 2025-09-01 00:07:12,774 - satellite_download_logger - ERROR - Could not save metadata for LANDSAT/LC08/C02/T1_TOA/LC08_072088_20250811 that failed. Failed to open the image file data/nzd0347/L8/ms/2025-08-11-22-00-40_L8_nzd0347_ms.tif 2025-09-01 00:07:20,180 - satellite_download_logger - INFO - Successfully downloaded image ID LANDSAT/LC08/C02/T1_TOA/LC08_072089_20250726 as 2025-07-26-22-00-56_L8_nzd0347_ms.tif 2025-09-01 00:07:27,112 - satellite_download_logger - ERROR - Could not save metadata for LANDSAT/LC08/C02/T1_TOA/LC08_072089_20250811 that failed. Failed to open the image file data/nzd0347/L8/ms/2025-08-11-22-01-04_L8_nzd0347_ms.tif 2025-09-01 00:07:30,793 - satellite_download_logger - ERROR - Could not save metadata for LANDSAT/LC09/C02/T1_TOA/LC09_072088_20250819 that failed. Failed to open the image file data/nzd0347/L9/ms/2025-08-19-22-00-45_L9_nzd0347_ms.tif 2025-09-01 00:07:38,537 - satellite_download_logger - ERROR - Could not save metadata for LANDSAT/LC09/C02/T1_TOA/LC09_072089_20250819 that failed. Failed to open the image file data/nzd0347/L9/ms/2025-08-19-22-01-09_L9_nzd0347_ms.tif 2025-09-01 00:07:38,600 - satellite_download_logger - INFO - Please read the following information carefully: 2025-09-01 00:07:38,600 - 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. 2025-09-01 00:07:38,600 - 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. 2025-09-01 00:07:38,600 - satellite_download_logger - INFO - --------------------------------------------------------------------------------------------------------------------- 2025-09-01 00:07:38,602 - satellite_download_logger - INFO - Extracting shorelines for L5 Minimum Shoreline Length: 500 2025-09-01 00:07:38,607 - satellite_download_logger - INFO - WARNING: CoastSat has hard-coded the value for the minimum shoreline length for L7 to 200 2025-09-01 00:07:38,607 - satellite_download_logger - INFO - Extracting shorelines for L7 Minimum Shoreline Length: 200 2025-09-01 00:07:38,608 - satellite_download_logger - INFO - Extracting shorelines for L8 Minimum Shoreline Length: 500 2025-09-01 00:07:38,615 - satellite_download_logger - INFO - L8 2025-07-26-22-00-32 cloud cover : 0.00% 2025-09-01 00:07:38,640 - satellite_download_logger - INFO - L8 2025-07-26-22-00-32: sand: 0.00% ,whitewater: 0.00% ,water: 0.56% 2025-09-01 00:07:38,640 - satellite_download_logger - INFO - L8 2025-07-26-22-00-32: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-09-01 00:07:38,643 - satellite_download_logger - ERROR - L8 2025-07-26-22-00-32: 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. 2025-09-01 00:07:38,754 - satellite_download_logger - INFO - L8 2025-07-26-22-00-56 cloud cover : 0.00% 2025-09-01 00:07:38,956 - satellite_download_logger - INFO - L8 2025-07-26-22-00-56: sand: 0.00% ,whitewater: 5.01% ,water: 50.61% 2025-09-01 00:07:38,958 - satellite_download_logger - INFO - L8 2025-07-26-22-00-56: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-09-01 00:07:38,965 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 3 shorelines. Number of shorelines after filtering shorelines: 1 shorelines 2025-09-01 00:07:38,965 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 515 2025-09-01 00:07:38,969 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 515 2025-09-01 00:07:38,969 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 515 2025-09-01 00:07:38,969 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 515 2025-09-01 00:07:39,333 - satellite_download_logger - INFO - Extracting shorelines for L9 Minimum Shoreline Length: 500