2025-03-05 16:22:53,047 - satellite_download_logger - ERROR - Could not save metasdata for LANDSAT/LC08/C02/T1_TOA/LC08_076091_20241124 that failed. Failed to open the image file data/nzd0460/L8/ms/2024-11-24-22-26-45_L8_nzd0460_ms.tif 2025-03-05 16:22:59,390 - satellite_download_logger - INFO - Successfully downloaded image id LANDSAT/LC08/C02/T1_TOA/LC08_076091_20241210 as 2024-12-10-22-26-33_L8_nzd0460_ms.tif 2025-03-05 16:23:04,736 - satellite_download_logger - INFO - Successfully downloaded image id LANDSAT/LC08/C02/T1_TOA/LC08_076091_20241226 as 2024-12-26-22-26-37_L8_nzd0460_ms.tif 2025-03-05 16:23:10,829 - satellite_download_logger - INFO - Successfully downloaded image id LANDSAT/LC08/C02/T1_TOA/LC08_076091_20250111 as 2025-01-11-22-26-40_L8_nzd0460_ms.tif 2025-03-05 16:23:16,926 - satellite_download_logger - ERROR - Could not save metasdata for LANDSAT/LC08/C02/T1_TOA/LC08_076091_20250127 that failed. Failed to open the image file data/nzd0460/L8/ms/2025-01-27-22-26-36_L8_nzd0460_ms.tif 2025-03-05 16:23:23,872 - satellite_download_logger - ERROR - Could not save metasdata for LANDSAT/LC08/C02/T1_TOA/LC08_076091_20250212 that failed. Failed to open the image file data/nzd0460/L8/ms/2025-02-12-22-26-33_L8_nzd0460_ms.tif 2025-03-05 16:23:29,021 - satellite_download_logger - ERROR - Could not save metasdata for LANDSAT/LC08/C02/T1_TOA/LC08_077091_20241217 that failed. Failed to open the image file data/nzd0460/L8/ms/2024-12-17-22-32-46_L8_nzd0460_ms.tif 2025-03-05 16:23:36,738 - satellite_download_logger - INFO - Successfully downloaded image id LANDSAT/LC08/C02/T1_TOA/LC08_077091_20250118 as 2025-01-18-22-32-48_L8_nzd0460_ms.tif 2025-03-05 16:23:42,222 - satellite_download_logger - INFO - Successfully downloaded image id LANDSAT/LC08/C02/T1_TOA/LC08_077091_20250203 as 2025-02-03-22-32-49_L8_nzd0460_ms.tif 2025-03-05 16:23:47,655 - satellite_download_logger - INFO - Successfully downloaded image id LANDSAT/LC09/C02/T1_TOA/LC09_076091_20241202 as 2024-12-02-22-26-48_L9_nzd0460_ms.tif 2025-03-05 16:23:53,918 - satellite_download_logger - INFO - Successfully downloaded image id LANDSAT/LC09/C02/T1_TOA/LC09_076091_20241218 as 2024-12-18-22-26-43_L9_nzd0460_ms.tif 2025-03-05 16:24:02,118 - satellite_download_logger - INFO - Successfully downloaded image id LANDSAT/LC09/C02/T1_TOA/LC09_076091_20250103 as 2025-01-03-22-26-39_L9_nzd0460_ms.tif 2025-03-05 16:24:09,377 - satellite_download_logger - INFO - Successfully downloaded image id LANDSAT/LC09/C02/T1_TOA/LC09_076091_20250119 as 2025-01-19-22-26-46_L9_nzd0460_ms.tif 2025-03-05 16:24:15,507 - satellite_download_logger - INFO - Successfully downloaded image id LANDSAT/LC09/C02/T1_TOA/LC09_076091_20250204 as 2025-02-04-22-26-41_L9_nzd0460_ms.tif 2025-03-05 16:24:21,595 - satellite_download_logger - INFO - Successfully downloaded image id LANDSAT/LC09/C02/T1_TOA/LC09_076091_20250220 as 2025-02-20-22-26-44_L9_nzd0460_ms.tif 2025-03-05 16:24:26,908 - satellite_download_logger - INFO - Successfully downloaded image id LANDSAT/LC09/C02/T1_TOA/LC09_077091_20241225 as 2024-12-25-22-32-56_L9_nzd0460_ms.tif 2025-03-05 16:24:32,033 - satellite_download_logger - INFO - Successfully downloaded image id LANDSAT/LC09/C02/T1_TOA/LC09_077091_20250110 as 2025-01-10-22-32-53_L9_nzd0460_ms.tif 2025-03-05 16:24:37,239 - satellite_download_logger - INFO - Successfully downloaded image id LANDSAT/LC09/C02/T1_TOA/LC09_077091_20250126 as 2025-01-26-22-32-54_L9_nzd0460_ms.tif 2025-03-05 16:24:42,457 - satellite_download_logger - INFO - Successfully downloaded image id LANDSAT/LC09/C02/T1_TOA/LC09_077091_20250211 as 2025-02-11-22-32-55_L9_nzd0460_ms.tif 2025-03-05 16:24:47,824 - satellite_download_logger - INFO - Successfully downloaded image id LANDSAT/LC09/C02/T1_TOA/LC09_077091_20250227 as 2025-02-27-22-32-47_L9_nzd0460_ms.tif 2025-03-05 16:24:47,886 - satellite_download_logger - INFO - Please read the following information carefully: 2025-03-05 16:24:47,886 - 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. 2025-03-05 16:24:47,886 - 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. 2025-03-05 16:24:47,886 - satellite_download_logger - INFO - --------------------------------------------------------------------------------------------------------------------- 2025-03-05 16:24:47,889 - satellite_download_logger - INFO - Extracting shorelines for L5 Minimum Shoreline Length: 500 2025-03-05 16:24:47,892 - satellite_download_logger - INFO - WARNING: CoastSat has hard-coded the value for the minimum shoreline length for L7 to 200 2025-03-05 16:24:47,892 - satellite_download_logger - INFO - Extracting shorelines for L7 Minimum Shoreline Length: 200 2025-03-05 16:24:47,893 - satellite_download_logger - INFO - Extracting shorelines for L8 Minimum Shoreline Length: 500 2025-03-05 16:24:47,971 - satellite_download_logger - INFO - Processing image L8 2024-12-10-22-26-33 2025-03-05 16:24:47,971 - satellite_download_logger - INFO - L8 2024-12-10-22-26-33 cloud cover : 0.00% 2025-03-05 16:24:48,612 - satellite_download_logger - INFO - L8 2024-12-10-22-26-33: sand: 0.00% ,whitewater: 6.81% ,water: 52.04% 2025-03-05 16:24:48,616 - satellite_download_logger - INFO - L8 2024-12-10-22-26-33: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-03-05 16:24:48,622 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 3 shorelines. Number of shorelines after filtering shorelines: 3 shorelines 2025-03-05 16:24:48,622 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 836 2025-03-05 16:24:48,622 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 836 2025-03-05 16:24:48,622 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 836 2025-03-05 16:24:48,671 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 835 2025-03-05 16:24:49,646 - satellite_download_logger - INFO - Processing image L8 2024-12-26-22-26-37 2025-03-05 16:24:49,646 - satellite_download_logger - INFO - L8 2024-12-26-22-26-37 cloud cover : 0.00% 2025-03-05 16:24:50,080 - satellite_download_logger - INFO - L8 2024-12-26-22-26-37: sand: 0.00% ,whitewater: 0.70% ,water: 57.60% 2025-03-05 16:24:50,089 - satellite_download_logger - INFO - L8 2024-12-26-22-26-37: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-03-05 16:24:50,108 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 4 shorelines. Number of shorelines after filtering shorelines: 3 shorelines 2025-03-05 16:24:50,108 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 821 2025-03-05 16:24:50,108 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 821 2025-03-05 16:24:50,108 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 821 2025-03-05 16:24:50,156 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 820 2025-03-05 16:24:51,408 - satellite_download_logger - INFO - Processing image L8 2025-01-11-22-26-40 2025-03-05 16:24:51,408 - satellite_download_logger - INFO - L8 2025-01-11-22-26-40 cloud cover : 0.00% 2025-03-05 16:24:51,941 - satellite_download_logger - INFO - L8 2025-01-11-22-26-40: sand: 0.02% ,whitewater: 0.05% ,water: 58.46% 2025-03-05 16:24:51,944 - satellite_download_logger - INFO - L8 2025-01-11-22-26-40: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-03-05 16:24:51,950 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 5 shorelines. Number of shorelines after filtering shorelines: 3 shorelines 2025-03-05 16:24:51,950 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 814 2025-03-05 16:24:51,950 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 814 2025-03-05 16:24:51,950 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 814 2025-03-05 16:24:51,986 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 813 2025-03-05 16:24:52,630 - satellite_download_logger - INFO - Processing image L8 2025-01-18-22-32-48 2025-03-05 16:24:52,631 - satellite_download_logger - INFO - L8 2025-01-18-22-32-48 cloud cover : 0.00% 2025-03-05 16:24:52,999 - satellite_download_logger - INFO - L8 2025-01-18-22-32-48: sand: 0.00% ,whitewater: 1.68% ,water: 55.80% 2025-03-05 16:24:53,002 - satellite_download_logger - INFO - L8 2025-01-18-22-32-48: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-03-05 16:24:53,012 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 4 shorelines. Number of shorelines after filtering shorelines: 3 shorelines 2025-03-05 16:24:53,012 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 845 2025-03-05 16:24:53,012 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 845 2025-03-05 16:24:53,012 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 845 2025-03-05 16:24:53,058 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 845 2025-03-05 16:24:53,908 - satellite_download_logger - INFO - Processing image L8 2025-02-03-22-32-49 2025-03-05 16:24:53,908 - satellite_download_logger - INFO - L8 2025-02-03-22-32-49 cloud cover : 0.00% 2025-03-05 16:24:54,186 - satellite_download_logger - INFO - L8 2025-02-03-22-32-49: sand: 0.00% ,whitewater: 2.47% ,water: 54.92% 2025-03-05 16:24:54,190 - satellite_download_logger - INFO - L8 2025-02-03-22-32-49: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-03-05 16:24:54,196 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 4 shorelines. Number of shorelines after filtering shorelines: 3 shorelines 2025-03-05 16:24:54,196 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 848 2025-03-05 16:24:54,196 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 848 2025-03-05 16:24:54,196 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 848 2025-03-05 16:24:54,246 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 848 2025-03-05 16:24:55,032 - satellite_download_logger - INFO - Extracting shorelines for L9 Minimum Shoreline Length: 500 2025-03-05 16:24:55,048 - satellite_download_logger - ERROR - Skipping L9 2024-12-02-22-26-48 due to cloud cover percentage exceeding cloud threshold: 89.15% > 10.00%. 2025-03-05 16:24:55,085 - satellite_download_logger - INFO - Processing image L9 2024-12-18-22-26-43 2025-03-05 16:24:55,085 - satellite_download_logger - INFO - L9 2024-12-18-22-26-43 cloud cover : 0.32% 2025-03-05 16:24:55,425 - satellite_download_logger - INFO - L9 2024-12-18-22-26-43: sand: 0.00% ,whitewater: 0.50% ,water: 57.67% 2025-03-05 16:24:55,429 - satellite_download_logger - INFO - L9 2024-12-18-22-26-43: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-03-05 16:24:55,448 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 6 shorelines. Number of shorelines after filtering shorelines: 3 shorelines 2025-03-05 16:24:55,448 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 831 2025-03-05 16:24:55,467 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 780 2025-03-05 16:24:55,467 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 780 2025-03-05 16:24:55,502 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 779 2025-03-05 16:24:56,269 - satellite_download_logger - INFO - Processing image L9 2024-12-25-22-32-56 2025-03-05 16:24:56,269 - satellite_download_logger - INFO - L9 2024-12-25-22-32-56 cloud cover : 0.00% 2025-03-05 16:24:56,564 - satellite_download_logger - INFO - L9 2024-12-25-22-32-56: sand: 0.00% ,whitewater: 3.53% ,water: 54.67% 2025-03-05 16:24:56,567 - satellite_download_logger - INFO - L9 2024-12-25-22-32-56: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-03-05 16:24:56,572 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 3 shorelines. Number of shorelines after filtering shorelines: 3 shorelines 2025-03-05 16:24:56,572 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 856 2025-03-05 16:24:56,572 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 856 2025-03-05 16:24:56,572 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 856 2025-03-05 16:24:56,625 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 856 2025-03-05 16:24:57,299 - satellite_download_logger - INFO - Processing image L9 2025-01-03-22-26-39 2025-03-05 16:24:57,299 - satellite_download_logger - INFO - L9 2025-01-03-22-26-39 cloud cover : 0.00% 2025-03-05 16:24:57,632 - satellite_download_logger - INFO - L9 2025-01-03-22-26-39: sand: 0.00% ,whitewater: 5.11% ,water: 53.14% 2025-03-05 16:24:57,640 - satellite_download_logger - INFO - L9 2025-01-03-22-26-39: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-03-05 16:24:57,645 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 4 shorelines. Number of shorelines after filtering shorelines: 3 shorelines 2025-03-05 16:24:57,645 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 835 2025-03-05 16:24:57,645 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 835 2025-03-05 16:24:57,646 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 835 2025-03-05 16:24:57,688 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 834 2025-03-05 16:24:58,324 - satellite_download_logger - INFO - Processing image L9 2025-01-10-22-32-53 2025-03-05 16:24:58,324 - satellite_download_logger - INFO - L9 2025-01-10-22-32-53 cloud cover : 0.00% 2025-03-05 16:24:58,677 - satellite_download_logger - INFO - L9 2025-01-10-22-32-53: sand: 0.00% ,whitewater: 0.44% ,water: 57.56% 2025-03-05 16:24:58,680 - satellite_download_logger - INFO - L9 2025-01-10-22-32-53: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-03-05 16:24:58,685 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 3 shorelines. Number of shorelines after filtering shorelines: 3 shorelines 2025-03-05 16:24:58,685 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 849 2025-03-05 16:24:58,685 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 849 2025-03-05 16:24:58,693 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 849 2025-03-05 16:24:58,784 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 849 2025-03-05 16:24:59,448 - satellite_download_logger - INFO - Processing image L9 2025-01-19-22-26-46 2025-03-05 16:24:59,448 - satellite_download_logger - INFO - L9 2025-01-19-22-26-46 cloud cover : 0.00% 2025-03-05 16:24:59,829 - satellite_download_logger - INFO - L9 2025-01-19-22-26-46: sand: 0.00% ,whitewater: 1.45% ,water: 56.21% 2025-03-05 16:24:59,844 - satellite_download_logger - INFO - L9 2025-01-19-22-26-46: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-03-05 16:24:59,849 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 5 shorelines. Number of shorelines after filtering shorelines: 3 shorelines 2025-03-05 16:24:59,849 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 812 2025-03-05 16:24:59,850 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 812 2025-03-05 16:24:59,850 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 812 2025-03-05 16:24:59,897 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 811 2025-03-05 16:25:00,488 - satellite_download_logger - INFO - Processing image L9 2025-01-26-22-32-54 2025-03-05 16:25:00,488 - satellite_download_logger - INFO - L9 2025-01-26-22-32-54 cloud cover : 0.00% 2025-03-05 16:25:00,961 - satellite_download_logger - INFO - L9 2025-01-26-22-32-54: sand: 0.01% ,whitewater: 6.03% ,water: 52.37% 2025-03-05 16:25:00,963 - satellite_download_logger - INFO - L9 2025-01-26-22-32-54: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-03-05 16:25:00,978 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 3 shorelines. Number of shorelines after filtering shorelines: 3 shorelines 2025-03-05 16:25:00,978 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 836 2025-03-05 16:25:00,978 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 836 2025-03-05 16:25:00,978 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 836 2025-03-05 16:25:01,046 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 836 2025-03-05 16:25:01,613 - satellite_download_logger - ERROR - Skipping L9 2025-02-04-22-26-41 due to cloud cover percentage exceeding cloud threshold: 91.29% > 10.00%. 2025-03-05 16:25:01,671 - satellite_download_logger - INFO - Processing image L9 2025-02-11-22-32-55 2025-03-05 16:25:01,671 - satellite_download_logger - INFO - L9 2025-02-11-22-32-55 cloud cover : 0.34% 2025-03-05 16:25:01,989 - satellite_download_logger - INFO - L9 2025-02-11-22-32-55: sand: 0.00% ,whitewater: 0.73% ,water: 57.50% 2025-03-05 16:25:01,993 - satellite_download_logger - INFO - L9 2025-02-11-22-32-55: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-03-05 16:25:02,000 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 3 shorelines. Number of shorelines after filtering shorelines: 3 shorelines 2025-03-05 16:25:02,000 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 844 2025-03-05 16:25:02,026 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 844 2025-03-05 16:25:02,026 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 844 2025-03-05 16:25:02,080 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 844 2025-03-05 16:25:02,649 - satellite_download_logger - ERROR - Skipping L9 2025-02-20-22-26-44 due to cloud cover percentage exceeding cloud threshold: 87.38% > 10.00%. 2025-03-05 16:25:02,702 - satellite_download_logger - INFO - Processing image L9 2025-02-27-22-32-47 2025-03-05 16:25:02,702 - satellite_download_logger - INFO - L9 2025-02-27-22-32-47 cloud cover : 0.00% 2025-03-05 16:25:03,018 - satellite_download_logger - INFO - L9 2025-02-27-22-32-47: sand: 0.00% ,whitewater: 0.99% ,water: 57.52% 2025-03-05 16:25:03,022 - satellite_download_logger - INFO - L9 2025-02-27-22-32-47: Less than 50 sand pixels detected within reference shoreline buffer. Using find_wl_contours1 2025-03-05 16:25:03,027 - satellite_download_logger - INFO - Number of shorelines before removing shorelines < 500m: 3 shorelines. Number of shorelines after filtering shorelines: 3 shorelines 2025-03-05 16:25:03,027 - satellite_download_logger - INFO - Number of shoreline points before removing points within 300m of cloud mask 837 2025-03-05 16:25:03,027 - satellite_download_logger - INFO - Number of shoreline points after removing points within 300m of cloud mask 837 2025-03-05 16:25:03,027 - satellite_download_logger - INFO - Number of shoreline points before removing points within 30m of no data pixel 837 2025-03-05 16:25:03,071 - satellite_download_logger - INFO - Number of shoreline points after removing points within 30m of no data pixel 837