aisdb.webdata.shore_dist module

Collect shore/port distances at given coordinates using NASA and Global Fishing Watch raster files. A (free) login is required to download Global Fishing Watch rasters, so these files must be manually downloaded and extracted into data_dir.

Raster data can be downloaded from:

https://oceancolor.gsfc.nasa.gov/docs/distfromcoast/GMT_intermediate_coast_distance_01d.zip
https://globalfishingwatch.org/data-download/datasets/public-distance-from-shore-v1
https://globalfishingwatch.org/data-download/datasets/public-distance-from-port-v1

once downloaded, place the unzipped geotiff files in data_dir

class aisdb.webdata.shore_dist.PortDist(imgpath)[source]

Bases: RasterFile

get_distance(tracks)[source]

class aisdb.webdata.shore_dist.ShoreDist(data_dir, tif_filename='GMT_intermediate_coast_distance_01d.tif')[source]

Bases: RasterFile

data_url = 'https://oceancolor.gsfc.nasa.gov/docs/distfromcoast/GMT_intermediate_coast_distance_01d.zip'

get_distance(tracks)[source]

aisdb.webdata.shore_dist.download_unzip(data_url, data_dir, bytesize=0)[source]