This page aims to document the levels of detail that can be targeted for OSM geodata in the Philippines. While the long-term goal is to have everything of interest mapped and kept up-to-date, there are intermediate levels of detail that can be attained and which makes the data immediately useful for particular purposes.
Levels
| Level
|
Parameters
|
Data requirements
|
1 Philippine map
|
| Scale / zoom
|
1:5,000,000-1:500,000 / 7-10
|
| Spatial accuracy
|
2,500-250 m
|
| Completion unit
|
Philippines (monitor per province)
|
| Use cases
|
|
| Sample products
|
|
|
Natural features:
- Complete coastline and place nodes of the largest islands (larger than 50 ha, maybe around 1000 islands)
- Paths and outlines of major rivers and lakes
- Labels of major straits, bays and gulfs (no tag yet)
- Nodes locating peaks of important mountains and volcanoes with ele=*
- Labels of mountain ranges (no tag yet)
- Labels of peninsulas (no tag yet)
Administrative features:
- Provincial and regional boundaries
- Nodes for centers of all cities and municipalities
Transport network:
- All highway=motorway, trunk, primary roads
- All railroads
- Complete Ro-ro routes and notable ferry routes
- Nodes for all airports
|
2 Provincial map
|
| Scale / zoom
|
1:500,000-1:50,000 / 11-13
|
| Spatial accuracy
|
250-25 m
|
| Completion unit
|
Region/Province (monitor per city/municipality)
|
| Use cases
|
- Provincial overview maps
- Regional tourist maps
|
| Sample products
|
|
|
The following are in addition to Level 1 coverage. (Take note of the increased spatial accuracy needed.)
Administrative features:
- City and municipality boundaries
- Nodes for all barangays
Transport network:
- All highway=secondary, tertiary roads
- All established ferry routes
|
3 City map
|
| Scale / zoom
|
1:50,000-1:5,000 / 14-16
|
| Spatial accuracy
|
25-2.5 m
|
| Completion unit
|
City/municipality (monitor per barangay or other sub-city/municipal unit)
|
| Use cases
|
- City/municipal maps
- City-level tourist maps
- City-level street atlases
|
| Sample products
|
|
|
|
4 Sat nav
|
| Scale / zoom
|
1:25,000-1:2,500 / 15-18
|
| Spatial accuracy
|
13-2 m
|
| Completion unit
|
City/municipality (monitor per barangay or other sub-city/municipal unit)
|
| Use cases
|
- GPS sat nav systems for motorized vehicles
|
| Sample products
|
|
|
|
5 Area map
|
| Scale / zoom
|
1:10,000-1:1,000 / 16-19
|
| Spatial accuracy
|
5-1 m
|
| Completion unit
|
Any specific area
|
| Use cases
|
- Building maps of business districts
- Campus maps
- Industrial park maps
|
| Sample products
|
|
|
|
6 Geocoder
|
| Scale / zoom
|
1:10,000-1:1,000 / 16-19
|
| Spatial accuracy
|
5-1 m
|
| Completion unit
|
City/municipality (monitor per barangay or other sub-city/municipal unit)
|
| Use cases
|
- Geocoding
- Reverse geocoding
|
| Sample products
|
unknown
|
|
|
7 Pedestrian nav
|
| Scale / zoom
|
1:5,000-1:500 / 17-20
|
| Spatial accuracy
|
3-0.5 m
|
| Completion unit
|
Barangay/area/district
|
| Use cases
|
- Pedestrian-level navigation
- Maybe: navigation for the blind
|
| Sample products
|
unknown
|
|
|
Meaning of parameters
- Scale / zoom. This is the target map scale for each level with a corresponding zoom level on standard OSM Slippy Maps (assuming a 96dpi screen). The scale and zoom dictates the amount of detail and spatial accuracy needed.
- Spatial accuracy. This specifies how accurate the features must be positioned. This required accuracy level is estimated such that the allowable error is less than the resolution of 50dpi when a map at that corresponding level's scale is printed.
- Completion unit. This states the suggested geographic area that should be used to target completion for a corresponding level. For example, for Level 2, a good target is to have the province of Bulacan reach this level.
- Use cases. Possible uses, products, or services that can be produced when we have complete data for a completion unit at the corresponding level.
- Sample products. This gives examples of existing non-OSM products and services that fit the corresponding level.
