Protx Geospatial Data

Docker image containing geospatial data for Protx portal.

	How it is used	Additional notes
geojson files	served via nginx to frontend client
vector tiles	served via nginx to frontend client	These are uncompressed vector tilest
PostgreSQL/PostGIS database	utilized by protx backend to create some responses (e.g. resource downloads)

This image is Used by the following repos:

Build

To build and deploy to dockerhub:

make build
make publish

Background

The initial work is described in confluence.

The basic steps are:

convert shapefiles to geojson (using gdal's ogr2ogr)
use tippecanoe to create static vector tiles

Status and Next Steps

Vector tiles

These tippecanoe uncompressed files work but there are some shortcomings: (i) frontend gets a lot of missing errors when zooming to places outside the bounds of our generated vector tiles and (ii) the size of the data is large. COOKS-27 details a possible approach to improve things by serving the tiles (see ticket for more info: "To create mbtiles and then serve them through tileserver-gl (TileServer-GL, https://github.com/klokantech/tileserver-gl)) . Or there are other ways to do this (postgis?)

Geospatial database

We need a geospatial database (postgis) and endpoint to handle queries like (1) searching through names (e.g. is any county named "Bexar"?) and (2) what is the extent of my selected region (e.g. what is the outline of this county)

Original data

This folder contains the original data used in this docker image:

texas_counties.shp is from /corral-secure/projects/Cooks-ProTX/spatial/tigris/texas_counties/
Texas_State_Boundary.geojson is from https://gis-txdot.opendata.arcgis.com/datasets/texas-state-boundary/explore

Note: In early versions of the portal, we were also presenting census tracs, urban areas, zip codes and dfps regions. Currently, we are only using county data with an outline of texas but a complete list of other geographic regions used in earlier demos can be found in confluence.

TACC/protx-geospatial-data

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