UM Geospatial Digital Special Collections

Citation: Florida Department of Transporation (2017). Florida US Highways [gis dataset]. Florida Department of Transporation. https://gis-fdot.opendata.arcgis.com/datasets/fdot::us-routes-tda/about. last updated: 2024-05-01 (update frequency: 1 week). Abstract: Location of US Routes in the state of Florida as derived from even mapping Key words: United States, Florida, Florida Department of Transportation, Transportation, US Routes, Highways, Interstates, Infrastructure Open Geospatial Consortium Standards: vector tiles | WMS (coming soon) | WFS (coming soon) Analytical Functions: gdsc_nearest_neighbor(table=fl_us_highways,lat=25.718,lng=-80.279,id=route) ETL documentation

ETL for fl_us_highways

######### # 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/fl_us_highways/{download,etl} && cd /data/fl_us_highways # set update flag based on last update and update frequency do_update=0 if date() < last_update + update_frequency else do_update = 1 # download if update flag is set: if do_update == 1 then wget -O download/fl_us_highways.json 'https://services1.arcgis.com/O1JpcwDW8sjYuddV/arcgis/rest/services/US_Routes_TDA/FeatureServer/0/query?where=1%3D1&outFields=*&outSR=4326&f=json' # replace column names Shape__Length and Shape__Area to avoid conflict when # providing as service on ArcServer. sed -i 's/Shape__Length/shape_length/gI; s/Shape__Area/shape_area/gI' download/fl_us_highways.json # load into postGIS with: ogr2ogr -lco GEOMETRY_NAME=geom -f PostgreSQL PG:"" download/fl_us_highways.json -nlt multilinestring -nln fl_us_highways ######### # Step 2 - SQL script (pseudo code): #### # remove duplicate points and make geometries valid: UPDATE fl_us_highways SET geom=ST_MakeValid(ST_RemoveRepeatedPoints(geom));" # add local geometry column and reproject existing geometries into local EPSG: SELECT AddGeometryColumn ( 'fl_us_highways', 'geom_local',2236,'multilinestring',2 ); UPDATE fl_us_highways SET geom_local=ST_Transform(ST_Multi(geom),2236); CREATE INDEX fl_us_highways_geom_local_idx ON fl_us_highways USING GIST (geom_local); NOTIFY pgrst, 'reload schema';"