pramsey / minimal-mvt

Example MVT server and map for pedagogical purposes

Python Setup

The tile server requires a database connection, so set up a virtual environment and then install the psycopg2 driver using pip.

cd minimal-mvt
virtualenv --python python3 venv
source venv/bin/activate
pip install -r requirements.txt

Configuration

Edit minimal-mvt.py and the TABLE and DATABASE constants:

TABLE = {
    'table':'nyc_streets',
    'srid':'26918',
    'geomColumn':'geom',
    'attrColumns':'gid, name, type'
    }  

DATABASE = {
    'user':'pramsey',
    'password':'password',
    'host':'localhost',
    'port':'5432',
    'database':'nyc'
    }

Run

python3 minimal-mvt.py

minimal-mvt's Issues

I am stucked

I am stucked with creating database table with constant values and how can i populate table. Can someone help me ?

Could you please provide an example sql dump of the data?

I found your talk on youtube and thought it was great. Just wanna learn more about it all could you please provide an example sql dump of the data?

Default buffer not working

The default buffer, that ST_AsMVTGeom has is not being applied to data I am trying to serve. The data is point data, which I am displaying a Voronoi polygons. Below I have attached two images. This first image shows the Voronoi polygons created from VT tiles served from minimal-mvt. In this image the Voronoi polygons do not line up because the tiles have no buffer. The second images is a case where there is a buffer (tiles served from pg_tileserv), so the Voronoi polygons line up.

I think this is a problem with ST_AsMVTGeom. Are you familiar with it?

Thanks
Jim