Chris Mader (2025). 2025 Crandall Cemetary Drone Survey [gis dataset]. University of Miami GDSC. https://gdsc.idsc.miami.edu/. last updated: 2025-07-09 (update frequency: Never). High resolution orthographic image of the historic Crandall Cemetary site in Yulee County, Florida. The image was created from a drone survey of the area. Key words: Crandall Cemetary, Yulee County, Florida Open Geospatial Consortium Standards: raster tiles | raster tile url: https://gdsc.idsc.miami.edu/rastertiles/ylc_2025_crandall_cemetary/{z}/{x}/{y}.png | WMS (coming soon) | WFS (coming soon) ETL documentation

ETL for ylc_2025_crandall_cemetary

######### # GDSC ETL is performed in two steps: shell script to ETL data into postgres # and then additional transformations with SQL in postGIS (if needed). #### ######### # Step 1 - bash script (pseudo code) #### # create directory structure and move into it mkdir -p /data/ylc_2025_crandall_cemetary/{download,etl} && cd /data/ylc_2025_crandall_cemetary # set update flag based on last update and update frequency do_update=0 if date() < last_update + update_frequency else do_update = 1 # render raster tiles cd /data/ylc_2025_crandall_cemetary/ gdal2tiles.py -ex --xyz -z 12-22 /data/ylc_2025_crandall_cemetary/download/ylc_2025_crandall_cemetary.tif /tiles/raster/ylc_2025_crandall_cemetary