[#1] Worldpop raster import

README.md

@@ -1,2 +1,20 @@
 # mapnik-raster-colorizer
+
 Example of Mapnik raster colorizer
+
+## Usage
+
+    docker-compose up --build -d
+
+## Raster dataset license
+
+[WorldPop](http://www.worldpop.org.uk/data/summary/?doi=10.5258/SOTON/WP00234) datasets
+are licensed under the [Creative Commons Attribution 4.0 International License](https://creativecommons.org/licenses/by/4.0/)
+
+> Africa population count data: Linard, C., Gilbert, M., Snow, R.W., Noor, A.M. and Tatem, A.J., 2012,
+> Population distribution, settlement patterns and accessibility across Africa in 2010, PLoS ONE, 7(2): e31743.
+
+
+## License
+
+LGPL v2.1 [Same as Mapnik](https://github.com/mapnik/mapnik#license)

docker-compose.yml

@@ -0,0 +1,11 @@
+version: "3"
+services:
+  postgres:
+    build:
+      context: ./postgres
+    environment:
+      - POSTGRES_PASSWORD=sa
+    volumes:
+      - ./rasters:/rasters
+    ports:
+      - "5432:5432"

postgres/Dockerfile

@@ -0,0 +1,9 @@
+FROM mdillon/postgis:9.6
+
+RUN set -ex; apt-get update && \
+    apt-get install -y gdal-bin && \
+    rm -rf /var/lib/apt/lists/* && \
+    mkdir /rasters && \
+    chown postgres:postgres -R /rasters;
+
+COPY raster-import.sh /docker-entrypoint-initdb.d/

postgres/raster-import.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+
+set -eu
+
+GEOTIFF="SLE10adjv4.tif"
+ARCHIVE="/rasters/SLE.tar.gz"
+DB_NAME="sierra_leone"
+
+if [[ ! -f "${ARCHIVE}" ]]; then
+    exit 1;
+fi
+
+echo "CREATE DATABASE ${DB_NAME} TEMPLATE template_postgis" | psql -U postgres -h localhost
+
+cd /tmp
+
+tar xvfz "${ARCHIVE}"
+
+# Import - No transformation
+
+raster2pgsql -C -I -Y "${GEOTIFF}" -t 128x128 sle_pop | psql -U postgres -h localhost -d "${DB_NAME}"
+
+# Reproject and compress
+
+gdalwarp -ot Byte -co COMPRESS=LZW -t_srs EPSG:3857 "${GEOTIFF}" "sle-wm.tif"
+
+raster2pgsql -C -I -Y "sle-wm.tif" -t 128x128 sle_pop_wm | psql -U postgres -h localhost -d "${DB_NAME}"