Grid Sector

Grid Sectors

A Grid Sector is an unofficial name given for a part of the grid (or world map). The name was invented by the Geography Of Second Life group while editing List Of Microcontinents And Sim Clusters. The system proved to be very effective for map orientation.

Size

K10 sector and most of mainland continents

A Grid Sector is a square with 100 sims length and 100 sims wide. In kilometers, that is about 25.6/25.6 km. It looks like the Linden officials use something similar for the grid map. When you scale the map to lowest resolution, image does not form in the same moment for all the map. Image is formed for different parts of the map, parts that have shape of a square. This means that, at lowest resolution, grid map texture is saved in squares of about 100/100 sims.

An even smaller division is the Microsector.

Naming and coordinates

The only way to define the position of a structure on the map is by using Coordinates. The coordinates are similar to those used by Gridsurvey[1], in format longitude (min-max) /latitude (min-max) for a region of map and longitude/latitude for a single sim. The oldest sim, Da Boom, in Sansara, has coordinates 1000/1000.

Grid Sector are named with letters from left (West) to right (East) and with numbers from down (South) to up (North), exactly like the squares in a chess board. Theoretically, they start with grid sector A1 and end with T20. In practice, many grid sectors are in fact void sectors.

Using grid sectors

F11 sector contains many islands and structures

Unlike coordinates, it is much simpler to manage and understand a grid sector's position. It is a much easier way to find the position of a Continent, Subcontinent, Microcontinent, Sim Cluster, Sim Group or Isolated Sim using a Grid Sector.

Useful scripts

The following script can tell you your Coordinates, sim name and Grid Sector. put it into a HUD prim or an item you wear and when you touch it, you will know where you are:

//Created by Ana Imfinity
list sectors = [
    "zero", "A", "B", "C", "D", "E",
    "F", "G", "H", "I", "J", "K",
    "L", "M", "N", "O", "P", "Q",
    "R", "S", "T", "U", "V", "W"];

default
{
    touch_start(integer num_detected)
    {
        vector regionCorner = llGetRegionCorner();

//      0x100 = 2^8 (2 power 8) = 256

        integer grid_x = (integer)(regionCorner.x/0x100);
        integer grid_y = (integer)(regionCorner.y/0x100);

        integer column_number = (integer)(grid_x/100);
        string  column        = llList2String(sectors, column_number);
        integer row           = (integer)(grid_y/100);

        string sim = llGetRegionName();

        string output = "Current grid position: ("
                    + (string)grid_x + ", " + (string)grid_y
                    + ")\n\tGrid sector:\t   " + column + (string)row
                    + "\n\tSim name:\t\t '" + sim + "'";

        llOwnerSay(output);
    }
}

//  Example output:
//
//      Current grid position: (1023, 1007)
//          Grid sector:       J10
//          Sim name:          'Help Island Public'

List of grid sectors

Sectors

This list contains also their Coordinates:

D6, 400-500/600-700
D7, 400-500/700-800
D8, 400-500/800-900
D9, 400-500/900-1000
D10, 400-500/1000-1100
D11, 400-500/1100-1200
D12, 400-500/1200-1300
D13, 400-500/1300-1400
D14, 400-500/1400-1500
D15, 400-500/1500-1600
D16, 400-500/1600-1700
E5, 500-600/500-600
E6, 500-600/600-700
E7, 500-600/700-800
E8, 500-600/800-900
E9, 500-600/900-1000
E10, 500-600/1000-1100
E11, 500-600/1100-1200
E12, 500-600/1200-1300
E13, 500-600/1300-1400
E14, 500-600/1400-1500
E15, 500-600/1500-1600
F8, 600-700/800-900
F9, 600-700/900-1000
F10, 600-700/1000-1100
F11, 600-700/1100-1200
F12, 600-700/1200-1300
F13, 600-700/1300-1400
F14, 600-700/1400-1500
G6, 700-800/600-700
G7, 700-800/700-800
G8, 700-800/800-900
G9, 700-800/900-1000
G10, 700-800/1000-1100
G11, 700-800/1100-1200
G12, 700-800/1200-1300
G13, 700-800/1300-1400
G14, 700-800/1400-1500
H8, 800-900/800-900
H9, 800-900/900-1000
H10, 800-900/1000-1100
H11, 800-900/1100-1200
H12, 800-900/1200-1300
H13, 800-900/1300-1400
H14, 800-900/1400-1500
I5, 900-1000/500-600
I7, 900-1000/700-800
I8, 900-1000/800-900
I9, 900-1000/900-1000
I10, 900-1000/1000-1100
I11, 900-1000/1100-1200
I12, 900-1000/1200-1300
I13, 900-1000/1300-1400
I14, 900-1000/1400-1500
J4, 1000-1100/400-500
J5, 1000-1100/500-600
J7, 1000-1100/700-800
J8, 1000-1100/800-900
J9, 1000-1100/900-1000
J10, 1000-1100/1000-1100
J11, 1000-1100/1100-1200
J12, 1000-1100/1200-1300
J13, 1000-1100/1300-1400
J14, 1000-1100/1400-1500
K10, 1100-1200/1000-1100
K11, 1100-1200/1100-1200
K12, 1100-1200/1200-1300
K13, 1100-1200/1300-1400
L9, 1200-1300/900-1000
L11, 1200-1300/1100-1200
L12, 1200-1300/1200-1300
L13, 1200-1300/1300-1400
M10, 1300-1400/1000-1100
M11, 1300-1400/1100-1200
M12, 1300-1400/1200-1300
M13, 1300-1400/1300-1400
Q12, 1700-1800/1200-1300
R11, 1800-1900/1100-1200
R12, 1800-1900/1200-1300

Rows & Columns

Just like at a chess board, grid sectors form squares that can be grouped into 13 rows (from 4 to 16) and 12 columns (from D to M, plus Q and R).

Gallery

D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
E5
E6
E7
E8
E9
E10
E11
E12
E13
E14
E15
F8
F9
F10
F11
F12
F13
F14
G6
G7
G8
G9
G10
G11
G12
G13
G14
H8
H9
H10
H11
H12
H13
H14
I5
I7
I8
I9
I10
I11
I12
I13
I14
J4
J5
J7
J8
J9
J10
J11
J12
J13
J14
K9
K10
K11
K12
K13
L9
L11
L12
L13
M10
M11
M12
M13
Q12, R11, R12

Download

To download maps of grid sectors and oceans, use this link. The information is stored on Mega, the succesor of Megaupload, probably the most secure data storage & transfer system. You need Google Chrome to download.