Map of a South Carolina Island

Hilton Head Island

Done with OSM Tiles

Zoom Level 12

(OSM = Open Street Map)

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This OSM Map of Hilton Head Island page

Reference:
http://wiki.openstreetmap.org/wiki/ Slippy_map_tilenames#Zoom_levels

Brief overview:

• OSM tiles are 256x256 pixel PNG files.

• Filename (URL) format is http://tile.openstreetmap.org/zoom/x/y.png
  where
  zoom=zoom-level-integer (from 0 to 19),
  x=longitude-locator-integer (non-negative column number),
  y=latitude-locator-integer (non-negative row number).

• In the link above, see sample code to calculate x and y for a given zoom-level and a given latitude and longitude.

The following Hilton Head Island map is done
with map tiles at OSM zoom level 12.

Approximate latitude,longitude of Hilton Head:
32.1789, -80.7431 degrees

Each OSM tile is a 256x256 PNG file.

Each zoom-level-12 tile is one image out of
2^12 x 2^12 = 4096 x 4096 = 16,777,216 images ~ 16 million images
which are used by OpenStreetMap to cover most of the Earth.

These zoom-level-12 tiles go from
x-numbers 1127 to 1131. (5 columns)

These zoom-level-12 tiles go from
y-numbers 1658 to 1662. (5 rows)

Total: 5 x 5 = 25 tiles

Image width: 5 x 256 = 1,280 pixels
Image height: 5 x 256 = 1,280 pixels

These tiles are fetched from the
OSM server when you (re)load this page.

So these tiles form an image using
the latest versions of the OSM tiles.

Here is a link to an OSM (openstreetmap.org) 'slippy map'
for Hilton Head Island (Wikipedia link) --- initially at zoom-level 12 and
centered at about latitude and longitude 32.1789, -80.7431,
which is near the center of the island.

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Page was created 2019 Feb 12.