Grid Point Code

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La Boqueria

BarcelonaCataloniaSpain

Without a code
La Boqueria, Barcelona, and then directions
With a code
#J0C42-K57L3
Said aloud
La Boqueria K57L3

This code is one spot in La Boqueria, a cell 2.56 m by 2.57 m. Every stall front and doorway in it has a code of its own.

Get the code for your door

What the code says

The Grid Point Code for La Boqueria is #J0C42-K57L3. It names a cell 2.56 m north to south and 2.57 m east to west, centred on 41°22'54.43"N, 2°10'17.58"E, and it turns back into that cell on any phone or computer by arithmetic alone: no network, no account, no lookup table.

What it is
Public market in Barcelona, Spain
Code
#J0C42-K57L3
With a check character
#J0C42-K57L3*H
Short form
K57L3
Cell centre
41.381787, 2.171551
Cell size
2.56 m by 2.57 m
City
Barcelona
Region
Catalonia
Country
Spain

How to give this address

On a sign, a form or a delivery note

The whole code, #J0C42-K57L3. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Barcelona

La Boqueria K57L3: a name both people know, then the last five characters. They give back the exact code for anywhere within 4.0 km north or south and 4.0 km east or west of La Boqueria. Further away the same five name somewhere else, which is why the whole code is what goes on a sign.

Copied by hand, or read over a phone

#J0C42-K57L3*H. The character on the end catches any single mistyped symbol and any two neighbours swapped.

As a link or a square code

Open it on the map, move to the exact door, and add directions if the code needs help: "blue gate, second floor". The link and the square code carry them. Nothing is kept on this site.

From the city to the door

The first four characters name a cell about 40 km by 40.1 km here. Each one after that picks one of 25 inside the last, so the whole ten name a spot about the size of a doorway.

  1. J0C4Metropolitan area40 km by 40.1 km
  2. J0C42District8 km by 8.02 km
  3. J0C42KSuburb1.6 km by 1.6 km
  4. J0C42K5A few streets320 m by 321 m
  5. J0C42K57Building64 m by 64.1 m
  6. J0C42K57LEntrance12.8 m by 12.8 m
  7. J0C42K57L3Doorway2.56 m by 2.57 m

More in Spain

Place and region from Wikidata, described on Wikipedia; city from GeoNames, under CC BY 4.0.