Python function to get the co-ordinate pair of a point

Question

I am trying to geocode a point shape. But first I want to determine the coordinate pair of the point shapefile before geocoding. The error I get is: **ERROR** :ValueError: Must be a coordinate pair or Point

redshape = fiona.open("murt.shp")
from geopy.geocoders import Nominatim
geolocator = Nominatim(user_agent="my-ride")
location = geolocator.reverse(redshape)
print(location.address)

Any ideas?

Answer 1

The geolocator.reverse() method is expecting a Point obejct or a tuple with two coordinates. However, you are passing redshape, which is a fiona.collection.Collection object with all the features in your shapefile. You have to iterate through the collection, extract the coordinates and then call the geolocator. Here is an example:

import fiona
from geopy.geocoders import Nominatim

redshape = fiona.open("murt.shp")
geolocator = Nominatim(user_agent="my-ride")

for feature in redshape:
    coords = feature['geometry']['coordinates']  # here is the x, y pair of coordinates
    location = geolocator.reverse(coords)
    print(location.address)

As have you already pointed out, the order of the coordinates for the geolocator.reverse() method is y,x and not x,y as I initially thought. Keeping this in mind, you can unpack the x and y values individually and pass them in a specific order. Note that they are still passed inside a tuple.

x, y = feature['geometry']['coordinates']
location = geolocator.reverse((y, x))