GIS in Census Mapping Presentation India

GIS IN CENSUS MAPPING
A Census is a complex and expensive operation. It

must be well planned and carefully carried out so that
it produces reliable data at reasonable cost.
In any survey maps are essential.
Maps are needed during all stages of a Census. They
are needed in planning, in data collection, in
presentation and analysis of the results.
Maps are tools which make the Census accurate,
timely and useful.
Good maps are required in various stages of a
Census for the following reasons.
1. Planning operations: Reasonably up-to-date
maps are needed to set up enumerator
assignments.
Census is a continuing survey which can afford to put

more resources into mapping for future operations.
Hence the boundary stability for statistical area is
important.
It requires constant updating and filling up of maps for
later use.
The administrative units are to be divided into a
number of enumerator blocks.
An enumerator block consists of 120-150 households
or 600 – 700 persons.
Six enumerator blocks form a supervisory circle which
is controlled by a supervisor.
A number of supervisory circles form a charge, that is a

taluk or municipality which is controlled by a charge
officer.
Many charges or taluks form a district and many

districts into a state and many states into a country.
Like this the whole country is divided into a number of

enumerator blocks which is the lowest and basic unit.
The following is the administrative set up of Census in our
country.
STATE
DISTRICT
TALUK
VILLAGE TOWN
Supervisory Circle Supervisory Circle
E.B. E.B.
Before taking Census, the administrative units must be updated. The jurisdictional
changes that might have taken place between the last and present Censuses must be
incorporated.
We collect the updated taluk and district maps from Survey and
Land Records and town maps from the Municipal administration. We update the taluk
and district maps by referring to G.Os.
We send these maps to the concerned District Collectors for
verification and certification.
After receiving the certified maps we assign Census Location
Code to each village and town. By doing so, we assure that all
the area is covered
GIS as tool:
GIS is an enabling technology that can be made
use of in digitizing, editing / updating and
Coverages which could be the administrative
divisions map.
By creating digital data base, we have

permanent data base, and that can be altered at
any time, and no need to repeat the previous
exercises.Any changes to be marked can be
done immediately at no cost.
Creation of Digital Data base
The authenticated maps are digitized in different
layers by using the GIS software-ARC/INFO which
gives data in vector format.
We edit the maps in ARCEDIT and keep the boundaries
updated. By doing so, we get good quality maps and
they are very accurate and reasonably error free.
Certificate and Clearance from
Survey Of India.
As per rule any map facing International Boundary or

coastal line or categorized as ‘Restricted Map’ should
get certificate and clearance from Survey Of India and
Ministry of Defence for publication.
We prepare the restricted maps without any theme on
it and send them to our Map Division, New Delhi to get
certificate from the Survey Of India and Ministry of
Defence.
The next reason for the requirement of maps for
Census is
Data collection:
Maps of appropriate size and detail are needed to
ensure complete coverage of an area without any
omission or duplication. Once we create database up
to village level, the charge officers divide the area
into different supervisory circles and further into
enumeration blocks.
The third reason is,
Presentation and analysis of results:

Maps are used effectively to relate statistical data with the
geographical area to which the statistics apply,make the
statistics easier to understand and ensure use of the data by
the public.
We prepare different kind of maps related to different series of
publications:
Maps for District Census HandBook:
In this publication, we prepare taluk and district maps. In taluk
map we show all the villages and town boundaries with location
codes and also the transport network and amenities like school,
post office, police station, hospital etc
Maps for Town Directory:
We procure land use maps from the Town and Country Planning
Dept. and create database as per our requirements restricted to 6
categories like administrative, public, educational, recreational,
commercial, and industrial.
Maps for Census Atlas
In this publication we show thematic maps
based on demographic,economic,and socio-
cultural features. We show Physiographic maps
too.
Maps for General Population Tables:
The town maps generally class I and class II
maps are published in this volume
Apart from above some maps are shown in
General Economic tables, Socio-Cultural tables,
Houses and Household Amenities tables and in
special studies.
Conclusions
1.Delineation of EB
2. Administrative set up
3..Mapping and reasons for mapping
4.Authentication / updation
5.Certification
6.Creation of Database
7.Mapping for different themes
8.Long run benefits from mapping

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GIS IN CENSUS MAPPING

A Census is a complex and expensive operation. It

Census is a continuing survey which can afford to put

A number of supervisory circles form a charge, that is a

Many charges or taluks form a district and many

Like this the whole country is divided into a number of

Supervisory Circle Supervisory Circle

By creating digital data base, we have

As per rule any map facing International Boundary or

Presentation and analysis of results:

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