dissemination

							Dissemination with GIS


                            United Nations Statistics Division




    Workshop on Census Cartography and Management - October 2007
Census dissemination
 A census is not complete until the
  information collected is made available to
  potential users in a form suited to their
  needs
 The information may be:
   included in published tables and reports for
    general distribution
   produced as tables in unpublished form for
    limited distribution
   stored in a database and supplied upon request,
    or disseminated online (in this case it will be
    available only to connected populations)


        Workshop on Census Cartography and Management - October 2007
Census geographical units
 The census
  provides
  information at any
  geographical level,
  pre-existing or
  user defined




       Workshop on Census Cartography and Management - October 2007
The power of maps
   Maps visually communicate a concept or an idea.
   Maps are often meant to support textual information
   Maps appeal to the viewer’s curiosity
   Maps summarize large amounts of information concisely
   Maps can be used for description, exploration, confirmation,
    tabulation
   Maps encourage comparisons:
       Between different areas on the same map: where are
        population densities highest?
       Between different maps: is child mortality higher in the
        districts of province A than in province B?
       Same area: where and by how much do literacy rates for
        males and females differ in the districts?
       Between maps for different time periods: did fertility rates
        decline since the last census?

            Workshop on Census Cartography and Management - October 2007
GIS provide advanced functionalities
for census dissemination
 Combination of:
   Census database:
    data at any
    geographical level
   Geographical
    database:
    geographical
    structure of the
    country +
    cartographic
    representation

       Workshop on Census Cartography and Management - October 2007
Different Uses of Maps
   Geographical selection
   Direct selection of a user-defined area
   Area delineation
   Buffer zone
   Areas of influence
   Modelling: spatial smoothing



        Workshop on Census Cartography and Management - October 2007
Geographical selection

    Use this map to navigate to your area of interest by drilling down to the Geographic Areas that you require.




         Workshop on Census Cartography and Management - October 2007
Direct selection of a user-defined
area...
 The user describes
  the area on which
  he needs
  aggregated data by
  clicking on the
  components: for
  example,
  municipalities



       Workshop on Census Cartography and Management - October 2007
Area delineation
 E.g. Interactive
  determination of
  school districts
  with the same
  number of children
  in each school
  grade by
  aggregating census
  dissemination
  areas

       Workshop on Census Cartography and Management - October 2007
Buffer zone
 How many
  people live
  within a 5
  miles
  radius
  from the
  hospital ?




       Workshop on Census Cartography and Management - October 2007
Areas of influence
 Commuting
  distances:
  daily
  commuters
  flow




      Workshop on Census Cartography and Management - October 2007
Modelling: spatial smoothing
 Growth
  rate of the
  population
  between
  two
  censuses




       Workshop on Census Cartography and Management - October 2007
    Uses of Graphs: Enriching the
    Understanding of GIS Data Sets


   Exploratory Spatial Data Analysis
   Linked Maps, Graphs & Tables
   Dynamic Feature Selection
   Animation
   Visualization over Time



          Workshop on Census Cartography and Management - October 2007
     2010 World Programme on
      Population and Housing
            Censuses

                   DevInfo
    Demonstration of a Spatial Statistics
               Application


UNSD SUB-REGIONAL WORKSHOP ON   ZAMBIA      08-12
Challenge

Milestones

Standards

Partnerships

Tour

MDG Monitoring

EmergencyInfo

Digital Map Library

DevInfo.org




                      Customized Databases
                      More than 90 national
                      statistics organizations and
                      other agencies have adapted
                      DevInfo
Customized Tables
SAVE and SHARE customized reports

• RapidAssessment
• Regular Situation Reports
• MDG Reports
• Poverty Reduction
• Sector Reports
Panel with
themes,
layers,
features,
insets
       Add raster images
       from satellite maps




Add map insets
           INDIA
Display time
series of data in
maps
            INDIA
       Population Density




1901
            INDIA
       Population Density




1911
            INDIA
       Population Density




1921
            INDIA
       Population Density




1931
            INDIA
       Population Density




1941
            INDIA
       Population Density




1951
            INDIA
       Population Density




1961
            INDIA
       Population Density




1971
            INDIA
       Population Density




1981
            INDIA
       Population Density




1991
            INDIA
       Population Density




2001
        IND
        IA
Zoom-in through
levels of data in
maps
                 INDIA
           Population Density




         Zoom-in to state
L02      level

States
         Population Density

              INDIA




L02
States
            Population Density

                 INDIA




L03               Districts of the
Districts         State of Tamil
                  Nadu
                Population Density

                     INDIA




L04                   Sub- Districts of
Sub-districts         the State of Tamil
                      Nadu
    IND
    IA




48,594 childr
                             IND
Earthquake


50
                             IA
Point Layer


Earthquake simulation




                        751,000
                        children
2010 World Census Programme
 UNSD development project recently initiated
  in collaboration with UNICEF to improve
  DevInfo functionality for Censuses
 Three areas of improvement envisioned:
   allow for multi-dimensional cross-
    tabulations (eg. by age/sex) instead of just
    uni-dimensional indicators;
   improve current mapping facility; and
   allow for standard tables/graphs according
    to country-defined templates for census
    information dissemination (eg. one-page
    country report)