VolksNav in Iran: starting with urban radius r100
Circles r100 are the reference for location codes which look like this example:
| Azadi tower | StatusQuo Teheran | m9:15 r77 |
Such codes make more sense than postcodes can be used for buildings, stations, crossings, stop points, bridges etc. The conventions for this format with hours, minutes and radius are as follows:
StatusQuo(c) |
prefix of a location code | Bases on a relevant point called r0, the urban pole. |
m12 |
basic horizon hour | This is the direction from urban pole to north. m3 will be to east, m6 to south etc. This method divides the city like a cake into 12 sectors. |
number after the " : " |
horizon minutes | distance to the horizon hour, in steps of 100 meters. |
r... |
radius |
This is the distance to the pole, in steps of 100m. The map also shows circles with 100 km and 1.000 km radius around Isfahan, proper for the definition of province and/or national codes for cities, crossings, bridges etc... |
Urban systems, including National Code (example based on Isfahan):
| city | sector | minutes [km] | radius (km) |
|---|---|---|---|
| Isfahan | m0 | r0 | |
| Sari | m12 | :125 | r455 |
| Gorgan | m12 | :252 | r530 |
| Rizad_e_Mayam | m1 | :35 | r185 |
| Moalleman | m1 | :82 | r390 |
| Sabzevar | m1 | :265 | r680 |
| Bojnurd | m1 | :158 | r745 |
| Tabas | m2 | :145 | r500 |
| Birdshand | m2 | :315 | r705 |
| MESHHAD | m2 | r833 | |
| Yazd | m3 | :80 | r265 |
| Kerman | m3 | :255 | r578 |
| Zabol | m3 | :140 | r945 |
| Zahedan | m3 | :315 | r945 |
| Saravan | m3 | :550 | r1180 |
| Rafsandjan | m4 | r480 | |
| Bam | m4 | r750 | |
| Bandar Abbas | m4 | :295 | r753 |
| Tshahbahar | m4 | :225 | r1195 |
| Shiras | m5 | :95 | r350 |
| Kangan | m5 | ::240 | r535 |
| Kish | m5 | :140 | r715 |
| Borazjan | m6 | :45 | r378 |
| Mahshar | m7 | :90 | r330 |
| Ahvaz | m8 | :20 | r318 |
| Chorramabad | m9 | :100 | r322 |
| Kermanshah | m9 | :200 | r465 |
| Zanjan | m10 | :255 | r532 |
| Marivar | m10 | :40 | r600 |
| Baneh | m10 | :75 | r650 |
| Täbris | m10 | :305 | r776 |
| Urmia | m10 | :200 | r810 |
| Maku | m10 | :350 | r980 |
| Ghom | m11 | :50 | r235 |
| TEHERAN | m11 | :155 | r340 |
| Andisheh New Town | m11 | :122 | r345 |
| Karaj | m11 | :125 | r360 |
| Lahidshan | m11 | :130 | r530 |
| Ahar | m11 | r770 | |
These codes harmonize with codes for crossings, bridges, road exits, mines, oilfields etc.
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The division of the horizon into 12 directions can also be used global or indoor, example:
Täbris bazar:
1 unity = 1 meter
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