Converting tiles from TMS to XYZ format

tms2xyz.py

"""
Script to convert all tiles from TMS format to XYZ format.
gdal2tiles.py creates tiles in TMS format by default. XYZ
is a little easier to consume.

This script expects a root directory, and a zoom level.
"""

import os
import sys

# Get the arguments and check that they are correct
root_directory, zoom_level = sys.argv[1:]
if not os.path.isdir(root_directory):
    raise ValueError(f'Could not find root directory : {root_directory}')
if not os.path.isdir(os.path.join(root_directory, zoom_level)):
    raise ValueError(f'Could not find zoom level {zoom_level} in root directory')

# Then we find all the tiles in that directory and rename them to xyz format
# Source: https://gist.github.com/tmcw/4954721
root = os.path.join(root_directory, zoom_level)
xs = [f for f in os.listdir(root) if os.path.isdir(os.path.join(root, f))]
for x in xs:
    ys = [f for f in os.listdir(os.path.join(root,x)) if f.lower().endswith('.png')]
    for y in ys:
        new_y = (2**int(zoom_level)) - int(y[:-4]) - 1
        os.rename(os.path.join(root,x,y), os.path.join(root,x,f'{new_y}.png'))