Philippines/Geodata detail levels

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	Philippine overview maps
Sample products	National Bookstore's Roadmap of the Philippines wall map (1:1,000,000) Accu-map's Philippines wall map (1:1,100,000)

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	E-Z Map Philippines Travel Atlas Accu-map's Central Luzon road map (1:225,000) Accu-map's Southwest Luzon road map (1:180,000) Accu-map's Cavite road map (1:60,000)

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	E-Z Map's Metro Manila Street Guide (book) E-Z Map's Metro Manila map (folded poster size) (1:28,000) Accu-map's Metro Manila Citiatlas (1:16,000)

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	RoadGuide.ph AVT Navigator A-800

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	Accu-map's Makati-Ortigas Business Districts Building Map UP Campus maps

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.

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