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Transcript of 1 THE CENSUS CARTOGRAPHY Organization And Progress THE 2008 LIBERIA POPULATION AND HOUSING CENSUS...
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THE CENSUS CARTOGRAPHY
Organization And Progress
THE 2008 LIBERIAPOPULATION AND HOUSING CENSUS
UNSD WorkshopLUSAKA - ZAMBIA
Presented by:
Isaac MwangangiThomas Davis
Augustine FayiahJuanitta Dunna
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OUTLINE INTRODUCTION INTRODUCTION -MAP OF LIBERIA OBJECTIVES OF CENSUS MAPPING EXPECTED OUTPUTS PREPARATORY WORK CARTOGRAPHIC FIELD WORK CENSUS GEOGRAPHIC CODES QUALITY CONTROL PREPARATION OF EA MAPS FIELD MONITORING CHALLEGING TERRAIN AND DIFFICULT ROADS LESSONS LEARNED
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1. INTRODUCTION -MAP OF LIBERIA
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1. INTRODUCTION Censuses in 1962, 1974, and 1984 Results were 1.1, 1.5 and 2.1 millions,
respectively. Estimated population is 3.6 million No census for last 24 years due to 14 years of
civil crisis Next census planned in March 2008 Census preparatory activities started/on-going Census field mapping work started in March this
year
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2. OBJECTIVES OF CENSUS MAPPING
To provide maps for census enumeration
To construct an updated master sampling frame
To develop a geo-referenced spatial database on statutory boundaries, EAs, localities and social amenities
Provide a basis for GIS analysis and dissemination of the census results
Develop capacity in Census mapping/GIS
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3. EXPECTED OUTPUTS Maps for census enumeration
An updated master sampling frame
A geo-referenced spatial database on statutory boundaries, EAs, localities and social amenities
GIS Analytical reports on various thematic topics
An enhanced capacity in census mapping/GIS
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5. PREPARATORY WORK
Inventory of existing resources. Base Maps Space cartographic vehicles equipment and materials.
The census project document(s) Formulation of a census mapping plan
Assessment of the additional resources needed Budget Timeline
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5. PREPARATORY WORK CONT.
Procurement of equipment 1 Large Format Plotters 2 Large Format Printer/Copier 1 Digitizing tablet etc Computers
Expendable materials Software
ESRI Products Erdas
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5. PREPARATORY WORK CONT.
Recruitment of the International Expert Identification of partners Base maps
Updated 1:50,000 from UNMIL Satellite Imageries covering 13 main cities-UNMIL Original copies of 1:250,000- – Lands and Mines Original copies of 1:50,000 – Lands and Mines
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5. PREPARATORY WORK cont.
Obtaining lists of administrative units Prepare letters of introduction Prepare Mapping Reference Manual Recruit and train 81 mapping staff
Training in field mapping ARCGIS training by ESRI for 3 Study Tour on census mapping in Kenya funded by
UNFPA for 3
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5. PREPARATORY WORK cont.
Preparation of Base Maps for field work Scanning Georeferencing (WGS84 Zone 29) Reproduction using large format plotter/prnting
Machine Rural Areas 1:50,000/1:25,000 for rural areas Urban Areas (Satellite Maps 1:1,500/1:2,500/1:5,000
areas) Preparation of Planning maps
County/District 1:100,000/250,000 Urban Area/Zone 1:5,000/1:10,000
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5. PREPARATORY WORK cont.
Satellite Imagery
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6. CARTOGRAPHIC FIELD WORK
Contacting the local administration Listing administrative units and localities Map updating (administrative boundaries
and other features) Labeling/naming features correctly Recording the location of key feature using
GPS coordinates Preparation of GPS Sketch Maps Use of local guides
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6. CARTOGRAPHIC FIELD WORK cont.
Delineation of EAs in Rural Areas EAs must be within a clan Quick count of household in the locality Demarcation of Enumeration Areas each
containing 80-120 households An enumeration area may comprise of:
Several localities put together A whole locality Part of a locality (one locality divided into several
enumeration areas).
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6. CARTOGRAPHIC FIELD WORK cont
Delineation of EAs in Urban Areas EA must be within a Zone Structure Numbering and Household Listing Demarcation of Enumeration Areas each
containing 80-120 households EA boundaries following physical features Showing as many features as possible Plotting names of household heads on either
side of the EA boundary
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6. CARTOGRAPHIC FIELD WORK cont.
Numbering of Enumeration Areas on the EA maps and control forms EA01, EA02, EA03, EA04, EA05, EA06, EA07,
EA08, EA09, EA10, EA11, EA12, EA13.
Creation and Numbering of Supervision Areas on the maps SA 1 = EA01, EA02, EA03, EA04 SA 2 = EA05, EA06, EA07, EA08, EA09 SA 3 = EA10, EA11, EA12, EA13.
6. CARTOGRAPHIC FIELD WORK cont
75% of field work completed
FIELD MAPPING PROGRESS
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7. CENSUS GEOGRAPHIC CODES
county District Cl/zone EA Lo/to/com Type
Digit 1 2 3 4 5 6 7 8 9 10 11
County
District
Clan/Zone
EA
Lo/Town/Com
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7. CENSUS GEOGRAPHIC CODES cont.
03 Bomi
06 Bong
09 Grand Bassa
12 Grand Cape Mount
15 Grand Gedeh
18 Grand Kru
21 Lofa
24 Margibi
27 Maryland
30 Montserrado
33 Nimba
36 River Cess
39 Sinoe
42 River Gee
45 Gbarpolu
0602 Fuamah
0604 Jorquelleh
0606 Kokoyah
0608 Panta-Kpa
0610 Salala
0612 Sanayea
0614 Suakoko
0616 Zota
County Geographic Codes
The census Geographic Codes of the districts in Bong County
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7. CENSUS GEOGRAPHIC CODES cont.EA Number
EA GEOGRAPHIC CODE
Loc/ComCode
Type
EA01 0 6 1 6 0 1 0 1 0 1 2
EA02 0 6 1 6 0 1 0 2 0 2 2
EA03 0 6 1 6 0 1 0 3 0 2 2
EA04
0 6 1 6 0 1 0 4 0 3 2
0 6 1 6 0 1 0 4 0 4 2
0 6 1 6 0 1 0 4 0 5 2
EA1 comprises of 1 locality/communityEAs 2 and 3 comprises of 1 locality/community
EA 4 comprises of 3 localities/communities
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QUALITY CONTROL Review Meetings Field Reference Manual Training of staff Field supervision – Field Mapping
Coordinators Field Monitoring – Senior staff Indexing, filing and monitoring systems Tracking system being developed
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Prepare EA maps on clean copies Scan and geo-reference Digitize EA boundaries on-screen Edit and enter descriptive data Entry of GPS data Integrating data sets to ensure they fit
well
PREPARATION OF EA MAPS
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PREPARATION OF EA MAPS cont
Design and produce Enumeration Area Maps. Supervision Area Maps County, district and Urban Area Planning maps
Package and distribute EA/SA Maps Train field staff Provide technical support during
enumeration.
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PREPARATION OF CENSUS EA MAPS cont
GEOGRAPHICDATA
ATTRIBUTEDATA
Digital Topo/Satellite data
Field Returns EA/Adm Other features
GPSData
Control Forms
Scan, Georef, Digitize, Edit, Add descriptive info,
Projection ChangeTransformation
DevelopData Capture Screens
Data CaptureEditing, Correction
1. TYPES OF DATA
2. SOURCES OF DATA
3. DATA CONVERSION
4. INTEGRATION OF CENSUS MAPPING DATA SETS
vector data from
GPS sketch maps
Planning MapsUrban Areas
Planning MapsRural Areas
Overlay admini/EA boundaries
and other featuresOn satellite data
Overlay admini/EA boundaries
and other featuresOn topographic data
5. REPARATION OF FINAL EA and SA MAPS
INTEGRATION OF DATA SETS
PREPARATIONOF CENSUS MAPS
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GRAND GEDEH Reviewing the census cartographic work
FIELD MONITORING
26GRAND GEDEHExamining the census maps and control forms
FIELD MONITORING cont.
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RIVER GEE
Verifying Kankwaekan City limit on the census map.
FIELD MONITORING cont.
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RIVER GEE Census Map showing county, district, clan and EA
boundaries.
FIELD MONITORING cont.
29MARYLAND
Checking the accuracy of features on the base maps
FIELD MONITORING cont.
30MARYLAND - Sketch Map of Pleebo City showing the delineated EAs and structure numbers for key
features.
FIELD MONITORING cont.
31MARYLAND - Form 5 showing the listed UTM coordinates of various features.
FIELD MONITORING cont.
32GRAND BASSA - Buchanan City map reviewed
FIELD MONITORING CONT.
33GRAND BASSA - Demonstrating structure numbering and
household listing
FIELD MONITORING CONT.
34GRAND BASSA - Buchanan City plotting the missing road
FIELD MONITORING CONT.
SINOEReviewing the delineated EAs
FIELD MONITORING CONT.
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THE STATE OF THE ROADS IN THE FIELD CONT.
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CHALLEGING TERRAIN AND DIFFICULT ROADS CONT.
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CHALLEGING TERRAIN AND DIFFICULT ROADS CONT.
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CHALLEGING TERRAIN AND DIFFICULT ROADS CONT.
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CHALLEGING TERRAIN AND DIFFICULT ROADS CONT.
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CHALLEGING TERRAIN AND DIFFICULT ROADS CONT.
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CHALLEGING TERRAIN AND DIFFICULT ROADS CONT.
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LESSONS LEARNED
About 90% of the EAs maps were accurate during the pilot
Some field staff had problems using the maps A few EAs were either too large/small. Rainy season/difficult terrain slowed field work Use of defective base maps from UNMIL 1 meter resolution not enough in some areas Lack of vehicles for field coordination Field mappers were not provided with salaries
and other logistics on time Provision of base maps not smooth due
printing/logistics probles Field monitoring improved quality of the work
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END OF PRESENTATION
QUESTIONS????