README

In this project, I show how to create nice maps form OpenStreetMap data.

Dependencies

This Project requires Osmium for cropping the OSM .pbf files:

conda install conda-forge::osmium-tool

and a few Python Packages:

pip install pyrosm
pip install shapely
pip install pandas
pip install numpy
pip install matplotlib

Download the OSM Data

The data can be downloaded from Geofabrik in the .pbf format.
To crop the .pbf file, use Osmium (This step is optional, but recomended, in order to reduce runtime while plotting maps). This is the example to extract a map of Helsinki.

osmium extract -b 24.44,60.07,25.40,60.41 finland-251214.osm.pbf -o helsinki.osm.pbf

Downloading polygons of the Ocean/Sea

Within the OSM-data, polygons of the ocean/sea are not included (only the coastlines are included). If the ocean should be incuded in the map, this data has to be downloaded separately from this page. Download the eater polygons in the WGS84 Projection and un-zip them.

Plotting Maps

To plot the map, run the Notebook map.ipynb. An example for plotting the map of Helsinki and Karlsruhe is given in map.ipynb notebook.
There are a couple of options when plotting a map:

• Choosing the Coordinates of the bottom left corner of the map
• Adjusting the scale
  -> set the height parameter. This parameter sets the extent in latitudal direction. The unit of this parameter is degree (latitude). The extent in longitudal direction is calculated automatically according to the dimension of the map (default DIN A3 - horizontal).
• Including different types oft water/wetland/...
  -> read the corresponding attributes and pass them as a argument to the plot_map() function
• Including buildings -> set the corresponding parameter
• Adding points/markers to the map -> pass the coordinates of the point to be plotted
• Editing the title -> set the city/country name as title/subtitle. If the style of the title should be updated, edit the corresponding line in the plot_map() function.
• Adjusting the format of the map (default is DIN A3 - horizontal as .pdf and .png file)
  -> edit the corresponding line in the plot_map() function.
• Excluding Rails
  -> edit the corresponding line in the plot_map() function.
• And more (be creative!)