Grid Point Code

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Saint-Ouen flea market

ParisÎle-de-FranceFrance

Without a code
Saint-Ouen flea market, Paris, and then directions
With a code
#PXHP0-141P2
Said aloud
Saint-Ouen flea market 141P2

This code is one spot in Saint-Ouen flea market, a cell 2.56 m by 2.25 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 Saint-Ouen flea market is #PXHP0-141P2. It names a cell 2.56 m north to south and 2.25 m east to west, centred on 48°54'08.27"N, 2°20'21.86"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
Complex of flea markets in Saint-Ouen-sur-Seine, France
Code
#PXHP0-141P2
With a check character
#PXHP0-141P2*X
Short form
141P2
Cell centre
48.902296, 2.339405
Cell size
2.56 m by 2.25 m
City
Paris
Region
Île-de-France
Country
France

How to give this address

On a sign, a form or a delivery note

The whole code, #PXHP0-141P2. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Paris

Saint-Ouen flea market 141P2: 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 3.5 km east or west of Saint-Ouen flea market. 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

#PXHP0-141P2*X. 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 35.1 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. PXHPMetropolitan area40 km by 35.1 km
  2. PXHP0District8 km by 7.02 km
  3. PXHP01Suburb1.6 km by 1.4 km
  4. PXHP014A few streets320 m by 281 m
  5. PXHP0141Building64 m by 56.2 m
  6. PXHP0141PEntrance12.8 m by 11.2 m
  7. PXHP0141P2Doorway2.56 m by 2.25 m

More in France

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