Grid Point Code

Play

ByWard Market

OttawaOntarioCanada

Without a code
ByWard Market, Ottawa, and then directions
With a code
#TR1LR-TKLDF
Said aloud
ByWard Market TKLDF

This code is one spot in ByWard Market, a cell 2.56 m by 2.40 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 ByWard Market is #TR1LR-TKLDF. It names a cell 2.56 m north to south and 2.40 m east to west, centred on 45°25'37.57"N, 75°41'32.33"W, 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
Neighbourhood in Ottawa, Ontario, Canada
Code
#TR1LR-TKLDF
With a check character
#TR1LR-TKLDF*W
Short form
TKLDF
Cell centre
45.427104, -75.692314
Cell size
2.56 m by 2.40 m
City
Ottawa
Region
Ontario
Country
Canada

How to give this address

On a sign, a form or a delivery note

The whole code, #TR1LR-TKLDF. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Ottawa

ByWard Market TKLDF: 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 3.8 km east or west of ByWard 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

#TR1LR-TKLDF*W. 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 37.5 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. TR1LMetropolitan area40 km by 37.5 km
  2. TR1LRDistrict8 km by 7.5 km
  3. TR1LRTSuburb1.6 km by 1.5 km
  4. TR1LRTKA few streets320 m by 300 m
  5. TR1LRTKLBuilding64 m by 60 m
  6. TR1LRTKLDEntrance12.8 m by 12 m
  7. TR1LRTKLDFDoorway2.56 m by 2.4 m

More in Canada

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