Using nominatim.openstreetmap API

[Ghandi3D]

Hey guys im trying to get the geoshape of some postal codes for my DataFrame. I tried to get that with the overpassAPI, but i have problems with getting just the outer ways of a postal code and integrating that. with the nominatim.openstreetmap API i could just take the minlat. and minlon of every postal codes. That also works sometimes with overpass api but not always. do you know how i can use the nominatim.openstreetmap? because i cant integrate it into my code.

[Vinzenz_Mai]

Hi @Ghandi3D and welcome here.

I don’t know how you would get your goal with nominatim queries, but I’m pretty sure it’s the wrong choice. Why? Because it reads as it will be violating the Nominatim Usage Policy.

I quote that part that should be the main problem of your code (systematic queries).

Unacceptable Use

The following uses are strictly forbidden and will get you banned:

• Auto-complete search This is not yet supported by Nominatim and you must not implement such a service on the client side using the API.
• Systematic queries This includes reverse queries in a grid, searching for complete lists of postcodes, towns etc. and downloading all POIs in an area. If you need complete sets of data, get it from the OSM planet or an extract.
• Scraping of details The details page is there for debugging only and may not be downloaded automatically.

And don’t forget

• No heavy uses (an absolute maximum of 1 request per second).

[Mateusz_Konieczny]

You may need to download OSM data ( Downloading data - OpenStreetMap Wiki ) and preprocess it.