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Improvement in the diffusion of geographic information u sing new technologies. F rench I nstitute. By Sébastien O LIVEAU, F rench I nstitute , P ondicherry. of P ondicherry. Introduction : Uses of geography in the development field. Acquiring the data Storage capacity Acquisition

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improvement in the diffusion of geographic information u sing new technologies
Improvement in the diffusionof geographic informationusing new technologies

French Institute

By Sébastien OLIVEAU,

French Institute, Pondicherry

of Pondicherry

slide2

Introduction: Uses of geography in the development field.

  • Acquiring the data
    • Storage capacity
    • Acquisition
    • Problem of access to map
  • Processing the data
    • Mapping the data
    • New approaches to mapping
  • Diffusing the data
    • New way of diffusing maps
    • Interactivity
  • Conclusion : The SIPIS project
slide3

Acquiring the data

  • Processing the data
  • Diffusing the data
  • Conclusion
  • IntroductionUses of geography in the development field.
    • A tool for development
    • A technical Support
    • An Help for decision-making
    • What is Geographic information ?
slide4

Example of a software for simulating rainwater harvesting system

A tool for development

(http://www.gisdevelopment.net/application/health/overview/healtho0002.htm)

slide5

A technical Support

Management(infrastructure, natural disaster…)

slide6

Example of an health atlas prepared by NATMO

An Help for decision-making

(http://www.gisdevelopment.net/application/health/overview/healtho0002.htm)

slide7

Geo reference

DATA

+

=

What is Geographic Information ?

slide8

Processing the data

  • Diffusing the data
  • Conclusion
  • Introduction
  • Acquiring the data
    • Storage capacity
    • Acquisition
    • Problem of access to map
slide9

increase in speed of releasing census data on different format

1991: census operation

1991 Census

1994: All India Data at village level on CD

2000: last book released

February 2001: census operation

2001 Census

June 2001: first maps on the web

July 2001 : first books and CDs released

Storage capacity :

slide10

It’s now possible to stock geographic information for all the south indian villages…

Storage capacity :

slide11

Storage capacity :

… and to analyze them to produce new information, in a synthetic way.

slide12

Acquisition through automatic procedure:

the Eicher’s city map

of Chennai

Acquisition :

slide13

Census Of India map

Problem of access to map :

slide14

Problem of access to map :

(Necessity to cross the sources)

slide15

The port

Madras University

TIDEL Park

Free satellite image of Chennai

Problem of access to map :

(www.spaceimaging.com)

slide16

Free map provided by the US census

Problem of access to map :

(http://factfinder.census.gov/)

slide17

Introduction

  • Acquiring the data
  • Diffusing the data
  • Conclusion
  • Processing the data
    • Mapping the data
    • New approaches to mapping
slide18

Mapping the data :

From Davis, B, (1996), GIS: a visual approach, Onword press, Santa Fe (USA)

slide19

classification

More than 70,000 villages

3rd step: contouring

1st step: Aggregation

Less than 7 000 units

Final map

2nd step: Interpolation

New approach of mapping :

slide20

Introduction

  • Acquiring the data
  • Processing the data
  • Diffusing the data
    • New way of diffusing maps
    • Interactivity
  • Conclusion
slide21

One of the first census map in 2001

New way of

diffusing maps :

(http://censusindia.net/)

slide22

An example of an atlas available on the net

New way of

diffusing maps :

(http://www.usp.ac.fj/~gisunit/pacatlas/atlas.htm)

slide23

New way of

diffusing maps :

An example of an atlas on CD

(Atlas du Languedoc Roussillon, GIP RECLUS, Montpellier)

slide24

Interactive mapping

Interactivity :

Interactive mapping

(http://factfinder.census.gov/)

slide25

Introduction

  • Acquiring the data
  • Processing the data
  • Diffusing the data
  • Conclusion : The SIPIS project
slide28

Census map

Old toposheet

South Indian Population Information System

slide29

South Indian Population Information System

Mixing of sources through Geographic Information System (GIS)

slide31

South Indian Population Information System

17 000 Tamil villages linked with their census statistics…

slide32

South Indian Population Information System

Importation of various sources

(rivers from ESRI; Elevation was found on the Internet)

slide33

South Indian Population Information System

New way of mapping:

Interpolation of the census data related to irrigation

slide34

South Indian Population Information System

Querying the data through the map

slide36

Storage capacity : 17,000 villages, 250 towns & cities, more than 100 attributes for each (more than 150 Mo of data)

Numeric acquisition: easy update possible with the 2001 census data

Numeric acquisition: easy mixing of various sources

New way of mapping: trend maps of socio-cultural phenomena (literacy, sex-ratio…)

Interactivity: querying of the data linked with map

Interactivity: interactive cartography

improvement in the diffusion of geographic information u sing new technologies1
Improvement in the diffusionof geographic informationusing new technologies

By Sébastien OLIVEAU,

oliveau@ifpindia.org

French Institute

11 Saint Louis Street

605001 Pondicherry