Tanzania National Bureau of Statistics (2024). Tanzania 2022 Magu District (NBS) [gis dataset]. Tanzania National Bureau of Statistics. https://microdata.nbs.go.tz/index.php/catalog/49/related-materials. last updated: 0001-01-01 (update frequency: As Needed). Shapefile of the Magu District in Tanzania derived from the Tanzania Districts from the 2022 Census Key words: Tanania, Districs, Census Open Geospatial Consortium Standards: dynamic vector tiles | | WMS (coming soon) | WFS (coming soon) Analytical Functions: gdsc_get_attributes(tablename=tz_2022_nbs_magu_district,lat=25.718,lng=-80.279,identifier=dist_name,normal='') ETL documentation

ETL for tz_2022_nbs_magu_district

######### # 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/tz_2022_nbs_magu_district/{download,etl} && cd /data/tz_2022_nbs_magu_district # set update flag based on last update and update frequency do_update=0 if date() < last_update + update_frequency else do_update = 1 # load tz_2022_nbs_districts as dependency (see tz_2022_nbs_districts for details). # Create copy of geom dependency pg_dump -d $POSTGRES_DB -U $POSTGRES_USER -p $POSTGRES_PORT -h None -t tz_2022_nbs_districts | sed 's/tz_2022_nbs_districts/tz_2022_nbs_magu_district/g' | psql -d $POSTGRES_DB -U $POSTGRES_USER -p $POSTGRES_PORT -h None # drop geom_local and subset as per custom parameters psql -d $POSTGRES_DB -U $POSTGRES_USER -p $POSTGRES_PORT -h None -c " ALTER TABLE tz_2022_nbs_magu_district DROP COLUMN IF EXISTS geom_local; DELETE FROM tz_2022_nbs_magu_district WHERE NOT (reg_code = '19' AND dist_code = '02'); COMMIT;" # add local geometry column and reproject existing geometries into local EPSG: SELECT AddGeometryColumn ( 'tz_2022_nbs_magu_district', 'geom_local', 4326, 'multipolygon', 2 ); UPDATE tz_2022_nbs_magu_district SET geom_local=ST_MakeValid(ST_RemoveRepeatedPoints(ST_Transform(ST_Multi(geom),4326))); CREATE INDEX tz_2022_nbs_magu_district_geom_local_idx ON tz_2022_nbs_magu_district USING GIST (geom_local); NOTIFY pgrst, 'reload schema'; # Move into corrrect directory and create derivative directory in data package on osgeo cd /data/tz_2022_nbs_magu_district/ mkdir -p derived # Create shapefile of table in derivate directory on osgeo ogr2ogr -f "ESRI Shapefile" -overwrite derived/tz_2022_nbs_magu_district.shp PG:"" tz_2022_nbs_magu_district # Create downloadable tarfile of shp in derivative directory on osgeo rm -f derived/tz_2022_nbs_magu_district.shp.tar.gz tar -czf derived/tz_2022_nbs_magu_district.shp.tar.gz meta_dcat_tz_2022_nbs_magu_district.json -C derived tz_2022_nbs_magu_district.shp tz_2022_nbs_magu_district.prj tz_2022_nbs_magu_district.shx tz_2022_nbs_magu_district.dbf # Move into correct directory cd /data/tz_2022_nbs_magu_district/