DEMIX 10K Tiles
This is a system of nominally 10 km tiles covering the entire world.
The actual spacing is in arc minutes, and each 1x1 degree tile on earth is
divided into 10-100 subtiles
Table 1. Tile dimensions by latitude zone
|
Zone |
abs(Lat) |
Tile size
(arc min) |
Tiles per 1 degree |
1"x1"
Points per tile |
|
6
|
85-90 |
60x6 |
1x10 |
3600x360 |
|
5
|
80-85 |
30x6 |
2x10 |
1800x360 |
|
4
|
70-80 |
20x6 |
3x10 |
1200x360 |
|
3
|
60-70 |
12x6 |
5x10 |
720x360 |
|
2 |
50-60 |
10x6 |
6x10 |
600x360 |
|
1
|
0-50 |
6x6 |
10x10 |
360x360 |
The letters used for the subtiles exclude N/S and E/W
because those are used for the 1 degree tile names, and I/O because they can be
confused for 1/0
-
LongLetters = ('A','B','C','D','F','G','H','J','K','L') and increase from
west to east
-
LatLetters =
('M','P','Q','R','T','U','V','X','Y','Z') and increase from south to north
Tile Naming: [N,S]yy[LatLetter] [W,E]xxx[LongLetter]
In MICRODEM, create a shapfile with the tile boundaries and
names to cover any map
-
Open any map
-
Subset
& zoom
-
If you want the entire world, open one of these:
-
Cartography, DEMIX 10K Tiles
- The shapefile will be in the temporary directory
- To save, Report, Zip
shapefile or Copy shapefile to store permanently
Last revision 7/27/2022
