Tech & Sources
Software
GDAL, PostgreSQL/PostGIS, MapServer, Apache
Languages
Bash, SQL
Data Sources (one or more):
U.S. Geological Survey (USGS), U.S. Forest Service (USFS), National Elevation Data (NED), National Land Cover Data(NLCD), National Hydrography Data (NHD), Tiger/Line Census, 3D Elevation Program (3DEP), Geographic Names Information Service (GNIS), Open Street Map (OSM), Protected Areas Database v2.1 (PAD), National Interagency Fire Center (NIFC), National Weather Service (NWS), NASA, NOAA, National Wildfire Coordinating Group (NWCG), AirNOW.gov, U.S. Department of Interior (DOI), National Digital Forecast Database (NDFD), European Space Agency (ESA), USAFacts.org, ESRI, Google, Continental Divide Trail Coalition, Appalachian Trail Conservancy (ATC), National Snow and Ice Data Center (NSIDC), PRISM Climate Data Oregon State University, et al, and data collected in the field (trail trace)
|
Notes
Image: All fires since 1970 using rasterized polygons.
Process:
NIFC polygon/point vector data is retrieved daily for current year and as needed for previous years. Daily Bash script downloads data using wget and database is updated using ogr2ogr. The layer is then served by Apache/MapServer WMS as defined by the firefreq.map file.
WMS Resource:
https://localhost/services/reflect?
layers=firefreq,demshade,countylines,statelines,trace,pop
&bbox=-124.57,32.40,-111.63,40.08
&trail_id=1
&minyear=1970
&maxyear=2022
&width=1024
&t_srs=EPSG:3857
&format=image/png
Interactive map using WMTS:
https://www.postholer.com/map/Pacific-Crest-Trail/34.057779/-117.312698/10/meta,firefreq
|
