Transcript Map-based Data Dissemination for Philippine Census Valentino C. Abuan Director, Information Resources Dept. National Statistics Office (Philippines) UN Regional Seminar on Census Data Dissemination and Spatial.

Map-based Data
Dissemination for
Philippine Census
Valentino C. Abuan
Director, Information Resources Dept.
National Statistics Office (Philippines)
UN Regional Seminar on Census Data Dissemination and Spatial Analysis, Bangkok, 5-8 Oct 2010
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R
ecent Philippine Censuses
2007 Census of Population
- Conducted in Aug 2007
- Counts proclaimed in Apr 2008
2010 Census of Population and
Housing (CPH)
- Conducted in May 2010
- Currently undergoing data processing and evaluation
- Counts expected for proclamation by Dec 2010
- Detailed characteristics on staggered basis starting
2011
UN Regional Seminar on Census Data Dissemination and Spatial Analysis, Bangkok, 5-8 Oct 2010
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M
aps used in 2010 CPH
For Enumeration Area (EA) Delineation
- GPS units used for coordinates of landmarks serving
as reference points for the proposed EA
- Due to limited no. of GPS units, only selected
provinces were targeted and covered only barangays
(villages) identified to have multiple EAs
- Barangays with single EA and barangays belonging to
non-GPS provinces relied on maps provided by local
governments and sketch maps derived from previous
census rounds
UN Regional Seminar on Census Data Dissemination and Spatial Analysis, Bangkok, 5-8 Oct 2010
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M
aps used in 2010 CPH
For Shape File Generation
- Provincial and municipal boundaries previously
digitized from official maps (relatively accurate);
digitization started after 1995 census
- Barangay maps digitized from predominantly sketch
maps
UN Regional Seminar on Census Data Dissemination and Spatial Analysis, Bangkok, 5-8 Oct 2010
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P
lanned Geo Database
PostGIS
- Extension to the PostgreSQL database server to
provide geographic object support suitable for GIS
requirements
- PostgreSQL and PostGIS are both free and opensourced products
- Geo database is essential to the NSO as the
organization continues to build and improve its map
resources
UN Regional Seminar on Census Data Dissemination and Spatial Analysis, Bangkok, 5-8 Oct 2010
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M
ap Tools and Resources
fGIS (Forestry GIS)
- Freeware software for editing shape files
Google Earth images
- NSO defined its own grid system
- Grid is superimposed on the Google Earth image to
subdivide it into smaller and manageable blocks for
downloading
- Downloaded image blocks served as reference for
ground verification and GPS reading of identified
landmarks
GPS Units
- 80 units initially; 690 units added after the census
UN Regional Seminar on Census Data Dissemination and Spatial Analysis, Bangkok, 5-8 Oct 2010
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P
lanned Data Products
Atlas
Public-Use-File w/ shape files and
viewer software included
Product packaged in DevInfo; may
include other related indicators and
previous data
UN Regional Seminar on Census Data Dissemination and Spatial Analysis, Bangkok, 5-8 Oct 2010
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D
esirable Service
Web-based dynamic table generation
facility with map-based presentation
capabilities
- Currently under research
- Preferably using open-source tools and hosted on
Linux platform
UN Regional Seminar on Census Data Dissemination and Spatial Analysis, Bangkok, 5-8 Oct 2010
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M
ap Improvement
Sketch maps for dissemination often
limited to thematic presentation
Accurate maps important for spatial
analysis
NSO to embark on a “Rolling Program”
as strategy to sustain accurate map
buildup
UN Regional Seminar on Census Data Dissemination and Spatial Analysis, Bangkok, 5-8 Oct 2010
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R
olling Program for Maps
Gradual build-up of accurate maps
using GPS
Mapping activity to be included also in
recurring surveys and not just during
censuses
Funding for mapping to ride on budget
of recurring surveys
UN Regional Seminar on Census Data Dissemination and Spatial Analysis, Bangkok, 5-8 Oct 2010
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NSO Website:
http://www.census.gov.ph
Thank You!
UN Regional Seminar on Census Data Dissemination and Spatial Analysis, Bangkok, 5-8 Oct 2010
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