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https://github.com/oklabflensburg/open-map-style

German OpenStreetMap CartoCSS stylesheet for the Mapnik pre-processor developed by @oklabflensburg
https://github.com/oklabflensburg/open-map-style

cartocss mapnik mss openstreetmap osm

Last synced: 2 months ago
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German OpenStreetMap CartoCSS stylesheet for the Mapnik pre-processor developed by @oklabflensburg

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# German OpenStreetMap style



German openstreetmap CartoCSS stylesheet for the Mapnik pre-processor developed by @oklabflensburg



## Prerequisites



Install system dependencies and packages



```

sudo apt install wget curl

sudo apt install git git-lfs

sudo apt install python3 python3-pip python3-venv

sudo apt install gnupg2 gdal-bin osm2pgsql



wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | gpg --dearmor > postgresql-keyring.gpg

sudo mv postgresql-keyring.gpg /etc/apt/trusted.gpg.d/

sudo chown root:root /etc/apt/trusted.gpg.d/postgresql-keyring.gpg

sudo chmod ugo+r /etc/apt/trusted.gpg.d/postgresql-keyring.gpg

sudo chmod go-w /etc/apt/trusted.gpg.d/postgresql-keyring.gpg

echo "deb [arch=amd64, signed-by=/etc/apt/trusted.gpg.d/postgresql-keyring.gpg] http://apt.postgresql.org/pub/repos/apt/ `lsb_release -cs`-pgdg main" | sudo tee /etc/apt/sources.list.d/pgdg.list



sudo apt update

sudo apt install postgresql-16 postgresql-16-postgis-3 postgresql-client-16



curl -fsSL https://deb.nodesource.com/setup_22.x -o nodesource_setup.sh

sudo -E bash nodesource_setup.sh

sudo apt install nodejs

sudo npm install -g carto

```



## Create User



Make sure to add your user to the `oklab`-group.



```

sudo adduser oklab

sudo usermod -a -G www-data oklab

sudo mkdir -p /opt/oklab

sudo chown -R oklab:oklab /opt/oklab

sudo chmod 770 -R /opt/oklab

```



## Prepare Database



Open and edit `/etc/postgresql/16/main/pg_hba.conf` add following two entries into your config.



```

local   oklab           oklab                                   trust

host    oklab           oklab           127.0.0.1/32            trust

```



After these edits run `sudo systemctl restart postgresql.service`. To verify everything works run..



```

sudo systemctl status postgresql.service

```



Now change user `sudo -i -u postgres` and run these commands.



```

createuser -d oklab

createdb -O oklab oklab

psql -U oklab

exit

```



Note since the `oklab`-user does not have superuser permissions you must login with `psql`



```

\c oklab

CREATE EXTENSION IF NOT EXISTS postgis;

CREATE EXTENSION IF NOT EXISTS hstore;

ALTER TABLE geometry_columns OWNER TO oklab;

ALTER TABLE spatial_ref_sys OWNER TO oklab;

exit

```



## Import data



In our case we want to run TileMill locally against a local PostgreSQL database installation.

It is recommanded to download an OpenStreetMap data extract of your choise from [Geofabrik](https://download.geofabrik.de)



```

sudo -i -u oklab

mkdir -p /opt/oklab/map

cd /opt/oklab/map

wget https://download.geofabrik.de/europe/germany/

```



To import the OpenStreetMap data extract follow this steps, replace `` with the filename you downloaded before.



```

sudo -i -u oklab

cd /opt/git/openstreetmap-carto

osm2pgsql -G --hstore --style ./openstreetmap-carto.style --tag-transform-script openstreetmap-carto.lua -d oklab /opt/oklab/map/schleswig-holstein-latest.osm.pbf

```



Now you should be ready to create some indexes



```

sudo -i -u oklab

psql oklab

```



You should be loggedin as `oklab` user on your machine as well as on PostgreSQL



```

CREATE INDEX planet_osm_line_ferry ON planet_osm_line USING GIST (way) WHERE route = 'ferry' AND osm_id > 0;

CREATE INDEX planet_osm_line_label ON planet_osm_line USING GIST (way) WHERE name IS NOT NULL OR ref IS NOT NULL;

CREATE INDEX planet_osm_line_river ON planet_osm_line USING GIST (way) WHERE waterway = 'river';

CREATE INDEX planet_osm_line_waterway ON planet_osm_line USING GIST (way) WHERE waterway IN ('river', 'canal', 'stream', 'drain', 'ditch');

CREATE INDEX planet_osm_point_place ON planet_osm_point USING GIST (way) WHERE place IS NOT NULL AND name IS NOT NULL;

CREATE INDEX planet_osm_polygon_admin ON planet_osm_polygon USING GIST (ST_PointOnSurface(way)) WHERE name IS NOT NULL AND boundary = 'administrative' AND admin_level IN ('0', '1', '2', '3', '4');

CREATE INDEX planet_osm_polygon_military ON planet_osm_polygon USING GIST (way) WHERE (landuse = 'military' OR military = 'danger_area') AND building IS NULL;

CREATE INDEX planet_osm_polygon_name ON planet_osm_polygon USING GIST (ST_PointOnSurface(way)) WHERE name IS NOT NULL;

CREATE INDEX planet_osm_polygon_name_z6 ON planet_osm_polygon USING GIST (ST_PointOnSurface(way)) WHERE name IS NOT NULL AND way_area > 5980000;

CREATE INDEX planet_osm_polygon_nobuilding ON planet_osm_polygon USING GIST (way) WHERE building IS NULL;

CREATE INDEX planet_osm_polygon_water ON planet_osm_polygon USING GIST (way) WHERE waterway IN ('dock', 'riverbank', 'canal') OR landuse IN ('reservoir', 'basin') OR "natural" IN ('water', 'glacier');

CREATE INDEX planet_osm_polygon_way_area_z10 ON planet_osm_polygon USING GIST (way) WHERE way_area > 23300;

CREATE INDEX planet_osm_polygon_way_area_z6 ON planet_osm_polygon USING GIST (way) WHERE way_area > 5980000;

CREATE INDEX planet_osm_roads_admin ON planet_osm_roads USING GIST (way) WHERE boundary = 'administrative';

CREATE INDEX planet_osm_roads_admin_low ON planet_osm_roads USING GIST (way) WHERE boundary = 'administrative' AND admin_level IN ('0', '1', '2', '3', '4');

CREATE INDEX planet_osm_roads_roads_ref ON planet_osm_roads USING GIST (way) WHERE highway IS NOT NULL AND ref IS NOT NULL;

```



## Development



To run TileMill locally you may want to follow these instruction.

You need to have a specific node version installed on you machine.



```

sudo -i -u oklab

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.1/install.sh | bash

nvm install lts/carbon

nvm use v8.17.0

```



To insert OpenStreetMap data we want to use some `*.lua` scripts from this repo.



```

sudo -i -u oklab

cd /opt/oklab/git

git clone https://github.com/gravitystorm/openstreetmap-carto.git

cd openstreetmap-carto

carto project.mml > project.xml

python3 scripts/get-external-data.py --host=127.0.0.1 --database=oklab --username=oklab --port=5432

```



Clone the [TileMill](https://tilemill-project.github.io/tilemill/) project from GitHub as `oklab` user and run setup.



```

sudo -i -u oklab

cd /opt/oklab/git

git clone https://github.com/tilemill-project/tilemill.git

cd tilemill

npm install

npm start

```



## Running TileMill



This section needs to be extended. But here are some basic PostGIS layer configurations.



Connection string



```

dbname=oklab host=127.0.0.1 port=5432 user=oklab

```



Projection string, as reference you may have a look at https://epsg.io/3857



```

+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over

```