city

README

city

What it does:

• loads all buildings in a city from file
• normalizes their coordinates
• triangulates them
• calculates errors
• saves triangles data to assets/json_tmp
• finds out correctness %

Running

NOTE: get data from Overpass-turbo using the instructions below

go run city.go

Fetching data

Data comes from OpenStreetMap. You can use the Overpass-turbo query listed below, for fetching all buildings in Cracow:

[out:json];
(
    way[building](50.0,19.85,50.105,20.13);
    relation[building](50.0,19.85,50.105,20.13);
);
out body;
>;
out skel qt;

(shortened)

[out:json];(way[building](50.0,19.85,50.105,20.13);relation[building](50.0,19.85,50.105,20.13););out body;>;out skel qt;

Then look for an option to export data in *.geojson format and save it in assets/cracow_tmp.

TODO: Include data fetching in the program (requires OSM to GeoJSON conversion).