SERVICE CHARTER FOR THE CARTOGRAPHY DEPARTMENT
OF NATIONAL POPULATION COMMISSION
The Cartography Department is one of the core departments of the National
Population Commission that is charged with acquisition, production and preservation of
various categories of maps that serve as bases for the conduct of National Head Count
(i.e. Population Census), and other related socio-economic and demographic surveys,
e.g. National Demographic and Health Surveys (NDHS), Sentinel Surveys, National
Demographic and Education Surveys, (NDES), National Migration Surveys etc.
The cartography Department in accordance with its statutory function co-
ordinates various categories of personnel to demarcate the country into Enumeration
Areas (EAs) i.e. compact geographical units with identifiable boundaries made up of
physical and/or man-made features and with a population threshold an enumerator can
cover within the specified period of census.
The first nationwide attempt at demarcation of the country into EAs as a prelude
to the population census was carried out in 1973, with the country being divided into
112,000 EAs. The resulting E.As then were too large in most cases for an enumerator’s
The 1991 census inadvertently had to focus on the goal of producing accurate,
reliable and acceptable census. Accepting the premise that accuracy, reliability and
unambiquity of E.A maps establishes to a large extent, the National population
Commission worked to divide the country into 212,072 E.As for the 1991 Census. Thus
the census results represented a good estimate of population of the country because the
enumeration was based on acceptable and reliable spatial entities.
The E.A. sketches of the 1991 census were not drawn to scale because the focus
of the demarcation exercise was more on the reasonable size of enumeration
assignment area: The sketches were not geo-referenced because the commission
lacked the required infrastructures, and required more time to achieve that goal. Thus
the Commission had to limit itself to using non-geo-referenced non-scaled E.A. Sketches
for conducting the Census.
A necessary improvement on the success scores of 1991 Census is therefore
imperative for the 2006 Population and Housing Census in Nigeria. The EAs for Census
in any country would naturally change for successive Censuses. However geo-
referenced E.A frame facilitates comparability of data from census to census irrespective
of physical change that occurs. Improved collection mapping also changes
computerization which allows for endless spatial location – allocation and analytical
queries with GIS software packages.
For 2006 Census, higher demarcation techniques were involved. The country
was demarcated into 662,529 well traversed E.As that were drawn to scale for the
purpose of geo-referencing them.
The Department is structured into 4 divisions, namely:
(i) Field Operations and Quality Control Division;
(ii) Automated Mapping and GIS Division;
(iii) Map Research and Archives Division and
(iii) Map Reproduction Division.
Clients to the Department are the Public, Private Organizations, Governmental and
Non-Governmental Organizations (NGOs).
1. To Acquire, Reproduce/Produce and Preserve relevant maps for the conduct of
the dissemination of National Headcount (Census) and other related
2. To provide Nigeria with standard geographical sampling frame amenable to
Geographical Information System (GIS) and Digital Census Mapping.
THE FUNCTIONS OF THE VARIOUS DIVISIONS OF
A. Field Operations and Quality Control Division
1. Final authentification and systematic organization of digitally captured data from
the state offices;
2. Use of digitally captured data to design and develop several; national data base
like topological, E. A. Geographic features, locality, toponymy data bases, the
management and maintenance of these data bases.
3. For the production of maps and solution to location allocation optimization
problems, demographic analysis, etc. several data modeling and simulating are
often required. The division will be using population figures, geographic attributes
and catological relations stored in digital form to run all modeling and simulations
required for computing geographic indices and parameter for demographic
analysis and for outside agencies.
4. The production of diagrams for publications, atlas map and all production maps
require a lot of design test before arriving at an effective useful map. One section
of the division will be saddled with all such design visualization and presentation
5. In-house training on the use of soft and hardwares.
B. Duties of Map Research and Archives Division
1. Continuous update of boundaries of States, L. G. A.’s, vis-à-vis Enumeration
Area (E.A) maps. This involves possible changes in about 450,000 E. A. Maps.
For each year, changes are expected in at least 10% of the EAs.
2. Effective communication of spatial features and phenomena. Map dissemination
of demographic changes and development of symbols and graphic marks for
different audience and purposes. This division will undertake such responsibilities
3. Storage and cataloguing of all maps for archival purposes. Keeping accurate
record of services available to the public locally and internationally
4. Dispensing of all geo-cartographic services and sales to the public. Accounting of
revenue generation and marketing E.A. maps, census figures of localities,
availability of several resources in given localities, computation of different
geographic indices like distances, areas, density, nearest neighbour, catchments
areas etc. are some of the products for marketing.
C. DUTIES OF MAP REPRODUCTION DIVISION
1. Map reproduction in this case involves large scale production of maps and the
setting of standards for maps to be produced. This division ensures that each
type of map meets the required cartographic specification. For example
publication maps and diagrams differ in specification from public poster size or
2. Correct naming, update and replacement of names for effective communication
on all types of maps;
3. Off-set (wet) reproduction of copies of documents and maps;
4. Reprographic (Dry-process) copying of documents and maps;
5. Training in map design and reproduction techniques. Training on the use of
machines and equipments.
D. DUTIES OF FIELD EXERCISE AND QUALITY CONTROL DIV.
1. This division is charged with detailed logistics planning of all field exercises for
the states and LGA offices;
2. Collation of field returns and quality control of field returns. Documentation of field
returns for completeness and outstanding.
3. Standardization of quality of all final products.
4. Management and Processing of all incoming service requests to the department
and also, In-house servicing of requests from other departments.
5. Planning the logistics for training of ad-hoc staff for field exercises. Designing of
the content of trainings required for the different field exercises.
THE DEDICATION OF STAKEHOLDERS PARTICIPATING IN
In recognition of the strategic role played by the Cartography Department, the
Federal Government and other development partners (NGOs) have been at interplay to
further enhance/upgrade the capacity of the Cartography Department.
A standard GIS laboratory had been established in a temporary building for the
department since 2003. The laboratory is equipped with computers that are installed with
GIS softwares, scanners, various categories of printers, photocopiers, plotters, a high
capacity server donated to the department by DFID. This server affords the department
the capacity to process satellite imageries, vector maps generated by the department,
scanned E.A. maps etc.
Staffs of the Cartography Department (both in the Headquarters and the State
offices of the Commission) have been attending series of training in digital cartography
and GIS within and outside the country.
In 2004, two Cartographers each were selected from all the states and FCT
oiffices of the NPC and trained in digital cartography at Port-Harcourt. Since then two
computers had been installed in all the stated and FCT offices of the Commission.
Scanners, printers and photocopiers were also supplied to the state offices and FCT E.
A. maps had been scanned into the computers for digitizing and storage.
Between 2004 and 2007 the Federal Government in partnership with DFID had
procured satellite imageries and supplied to the department for Enumeration Area (EA)
demarcation. Some of these satellite imageries that were secured through the National
Agency for Space Research and Development Agency (NASRDA) come in two
categories with varying degrees of spatial coverage and spectral resolution.
The very high resolution imageries (Qickbird and Ikonos) cover about 480 cities
and towns. The high resolution imageries (spot 5) cover most part of the country (about
In 2005, the Federal Government and DFID contracted a German Company,
‘INFOTERA’ to train eight staff of the Cartography Department on how to process and
use the Satellite Imageries and other GIS techniques. This training lasted for over 6
months. The National Population Commission sponsored the annotation of satellite
imageries. The demarcation of some cities in Nigeria for the 2006 Population and
Housing Census was carried out on satellite imagery maps. However the annotation of
the satellite imagery maps became more rigorously pursued after the Census. It is a
project involving both the Headquarters and the State offices Cartography Staff. The
exercise has not been accomplished due to insufficient funding.
In 2004, the Federal Government ordered for Leica GPS receivers for the
department from a Swiss Company, ‘LEICA GEOSYSTEMS’ to be used for
demarcation for 2005 census. And as a pre-requisite to accepting the contract the
company had to train ten (10) staff of the department on how to operate the Leica GPS.
These trained staff later trained selected staff from all the states and FCT offices of the
Commission on how to operate the Leica GPS.
In 2006, a company, ‘PROMPTGEOSOLUTIONS’ trained about 20 staff of
Cartography Department in ‘MAPS SOFTWARE’ (promtserver and promt info). This
training was sponsored by the Federal Government and was aimed at equipping the
Cartography staff to cope with the processing and application of the satellite imageries
supplied to the department by the federal Government through NASRDA.
In January 2008, eight (8) Cartographers were trained at the Regional Centre for
training in Aerospace Surveys (RECTAS), Ile-Ife on Cartography and Geo-Visualization.
In the same vein, two Cartographers were selected from all the states and FCT
offices of the Commission and together with Headquarters, Cartography staff (making a
total of one hundred (100) staff in all) are trained in three batches on the same course
and at the aforementioned school under the auspices of the United Nations Funds for
Population Activities (UNFPA).
The first batch of training comprising of seven staff of the Headquarters,
Cartography Department and twenty six (26) nominees from the state offices lasted from
30th March – 20th April, 2008.
The second batch comprised nine (9) Headquarters Cartographers and twenty
four (24) nominees from the states, their training lasted from 27th April to 18th May, 2008.
The training of the last batch which is ongoing and comprising nine (9)
Headquarters Cartographers and twenty-five (25) nominees from the state offices will
last from 25th May to 15th June, 2008.
In summary, since after the conduct of the 2006 Population and Housing Census,
the cartography Department of the Commission has been pre-occupied in the following
1. Processing and annotating of satellite imageries;
2. Provision of various categories of maps for various purposes – surveys,
3. Capacity building for the staff of the department both for those in the
headquarters and those in the states and FCT offices of the Commission;
4. Participating in sentinel survey;
5. Participated in the orphan and vulnerable children (OVC) survey as trainers in
mapping and GPS, under the auspices of the Federal Ministry of Women Affairs,
6. Participating in the National Demographic and Education Surveys (NDES);
7. Periodic in-house training in GIS for the staff of the department, etc./
EXISTING LIMITATIONS/CONSTRAINTS IN THE
1. Lack of sufficient office and equipment accommodation;
2. Incessant power failure (this jeopardizes most of the activities in the department);
3. Lack of sufficient computer system that will go round to all the senior staff of the
4. Two faulty wide format plotters need repairs and four (4) additional plotters need
to be purchased to ease the workload;
5. Consummables (ink cartridges, printer papers etc) plotters need to be purchased;
6. About 12 faulty computers, three monochrome HP 5000 series A3 printers and
6HP 9000 series colour laser printers need to be repaired/serviced;
7. Toner cartridges and reams of printing papers need to be purchased for the A3
8. Provision of appropriate computer tables for 7 newly acquired computers with
wide screen monitors (30inc) for editing;
9. Faulty Local Area Network (LAN) and internet connection need to be restored for
easy communication and data transfer; etc.