Starting Point: z=9, x=117, y=215 Purpose: Verify all zoom levels show the SAME geographic location Expected: Each tile should be a zoomed-in/out view of the same spot
z=0
Coordinates:
x = 0
y = 0
z=1
Coordinates:
x = 0
y = 0
z=2
Coordinates:
x = 0
y = 1
z=3
Coordinates:
x = 1
y = 3
z=4
Coordinates:
x = 3
y = 6
z=5
Coordinates:
x = 7
y = 13
z=6
Coordinates:
x = 14
y = 26
z=7
Coordinates:
x = 29
y = 53
z=8
Coordinates:
x = 58
y = 107
z=9
Coordinates:
x = 117
y = 215
⭐ STARTING ZOOM
z=10
Coordinates:
x = 234
y = 430
z=11
Coordinates:
x = 468
y = 860
z=12
Coordinates:
x = 936
y = 1720
z=13
Coordinates:
x = 1872
y = 3440
What to look for:
All tiles should show the same location at different scales
z=0 = World view, z=13 = Very close-up
If tiles show different places, TileID calculation is broken
If tiles show same place but wrong region, source data is wrong