Processing

Pre-processing

Formating and Style Guidelines (aka Style Manual)

Thanks to a user's comment and reference to the Chicago Manual of Style, this page will serve as a formatting and style guidelines for this project.

This "Style Manual" is a compilation of rules being followed to pre-process the DPWH-RBI dataset.

Arabic Numerals are preferable to Roman Numerals

For example, a bridge called "Santa Monica Bridge Ⅳ" is preferably tagged as

• name=Santa Monica Bridge № 4
• alt_name=Santa Monica Bridge Ⅳ
• short_name=Santa Monica Bridge 4
  • use the correct symbols

Dashes

Use a space on either side of the en dash ("–", Unicode Character 'EN DASH' (U+2013)) between two nouns that both retain their original meaning. These are called ‘coordinate nouns’.

For a DPWH highway called "Ozamis City-Oroquieta City Road", tag this in OSM as

• nat_name=Ozamis – Oroquieta Road
• *drop "City" see toponyms

If a hyphen is used instead, a compound noun is created, and these cannot stand in for coordinate nouns.

Toponyms, Econyms

Use name key to capture the common name (i.e. without "City", "Barangay" , "Municipality of", etc.) with some exceptions. See LoCo convention on toponyms.

• tag "Barangay Poblacion" as name=Poblacion
• tag "Island Garden City of Samal" as name=Samal + official_name=Island Garden City of Samal
• tag "Barangay Ⅳ-A" as name=Barangay 4-A + alt_name=Barangay Ⅳ-A
• tag "Sitio Mabuhay" as name=Mabuhay + loc_name=Sitio Mabuhay
• tag "Barangay #23" as name = Barangay 23

is_in

The is_in=* tag is primarily used for indexing features where a feature is located, and also for creating a category for searching. The conventional reading order is smaller to bigger (i.e. neighbourhood;village;city;region;country)

Useful in PH where OSM administrative boundaries are inconsistently available.

The values found in the is_in are separated by semi-colons without spaces, and may include multiple econyms where boundaries are shared or disputed.

• A bridge found San Pedro, San Juan, and disputed boundary by San Nicolas in an imaginary town called Salem's Lot may be tagged as is_in=San Pedro;San Juan;San Nicolas;Salem's Lot
• In some records of the RBI dataset, multiple values in BRGY, and MUN fields are inconsistently separated by slashes, ampersands, commas, or descriptive text.
  • some phrases like "intersection among barangays ...", "boundary of ..." or "Barangay X & Barangay Y" to describe bridges on boundaries.
  • Simplify to only include the common name of the toponyms involved as values for is_in
  • Values found are not always barangay names. There had been sitios, subdivisions, or misplaced town- or province-names.

Transformations

• Abbreviations, acronyms are spelled-out in full.
• Missing "ñ" are corrected (e.g. Doña not Dona, Santo Niño not Santo Nino)
• Fix identifiable issues (typographic, orthographic)
• removal of technical terms in object names
  • JCT - Junction
  • NRJ - National Road Junction"
  • (truss), (cantilever)
  • RCDG - Reinforced Concrete Deck Girder
  • RCBC - Reinforced Concrete Box Culvert

Workflow