Transcript Use of Technological Tools in the Dissemination of Census Data United Nations Statistics Division United Nations Sub-regional Workshop on Collection and Dissemination of.

Use of Technological Tools in the Dissemination
of Census Data
United Nations Statistics Division
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Outline
 Census Data Dissemination
 Dissemination Challenges
 Emerging trends in data dissemination
 Geographic products
 Web-based mapping
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Census dissemination
 “A census is not complete until the
information collected is made available
to potential users in a form suited to
their needs”
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Used Formats in census data dissemination
 The information may be:
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included in published tables and reports for general distribution:
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Paper publication, CD-ROM/DVD
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produced as tables in unpublished form for limited distribution
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stored in a database and supplied upon request, or disseminated
online (in this case it will be available only to connected
populations):
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Static web-pages (html, PDF, Excel)
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Dissemination challenges
 How to present the right data with the right context to meet
users needs – To be user-oriented
 How to ensure that the most recent and most correct data
are used and displayed-Use of ICT and data accessibility
 How to take advantage of the spatial dimension of census
data
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Emerging trends in data dissemination
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Interactive Database
Open access/Free Download Facility
Geography Products
Web-based Mapping
Dissemination of Micro-Data
E-Government
Social Media/Networking
Mobile Technology (SMS, etc.)
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Presentation and analysis of data
 Maps help to:
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Relate statistical data to the geographic areas to which
they apply
Present data in a way that can be readily understood
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Difficult to see population distribution, relationships and
patterns in a table
Increase use of data by the public
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Effective distribution and widespread use of data will increase
support for future work
Source: US Census Bureau
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
A good statistical map
 A good map…
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must be true to the data it presents- it must present the
statistics in a valid way
should be easy to use and understand
should give the reader an overview of the information
Should be pleasing to look at and add value to the
representation of data
Source: US Census Bureau
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
2: statistics as spatial information
Statistical
world
Source:
EUROSTAT
The
physical
world
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Statistical Data
Spatial Data
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Maps are “representations” or “generalizations” of
reality
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Tsunami Affected Areas in Gizo, Solomon Islands
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Maps can help analyze locational distributions and spatial patterns
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Statistical data can be overwhelming
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
USA Median Household Income
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
USA Median Household Income
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
USA Median Household Income
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Maps can be used as a method of presenting information
and communicating findings
Japan - Statistics Bureau, Ministry of Internal Affairs
and Communications
Area
Selection
Cadastral
Map
Graph
Settings
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Graph and Map
What are Geographical Data Files?
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Files that contain the coordinates
describing the geographic features
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Examples:
– Streets and roads
– Legal, statistical and administrative area boundaries
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City limits
Census tracts
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Health districts
– Rivers, lakes, and flood zones
– Locations of toxic release sites
Source: US Census Bureau
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Brazil
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
US - Census Bureau
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Dynamic census atlases: “thematic maps on the fly”
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Alternative to a static census atlas
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Publishing of a digital map and database together with
mapping software can allow users to produce custom maps of
census indicators.
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Normally includes digital boundary files at a lower resolution
than the full census database to allow fast drawing and low
disk usage
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closely integrated attribute table should contain only a selected
number of census indicators.
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Densities and ratios that are appropriate for mapping should
already be calculated.
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
CHILE: HOUSING AND POPULATION CENSUS DISTRICTS 2002
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
A screenshot of Ukraine’s dynamics census atlas
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Importance of the Web
 Key medium for the dissemination of census data
 All standard geographic products are disseminated on the Web
 All data highlight tables are disseminated on the Web
 Benefits from Web Dissemination:
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Improved timeliness
Increased accessibility of products
Broader reach of products
Increased usability
 User-oriented, accessibility, web-based mapping
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
What is a Mashup?
 A web application that
combines data from more
than one source into a
single integrated tool
 an example is the use of
data from Google Maps to
add location information to
statistical data, thereby
creating a new and distinct
web service that was not
originally provided by either
source
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
How a Mashup works: APIs
 API is an abbreviation for Application Programming
Interface, a set of routines, protocols, and tools for
building software applications. A good API makes it easier to
develop a program by providing all the building blocks. A
programmer then puts the blocks together.
 Google Maps has a wide array of APIs that let you embed
the robust functionality of Google Maps into your own
website and applications, and overlay your own data on top
of them.
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Cont…
 Web services today are frequently just Application
Programming Interfaces (API) or web APIs that can be
accessed over a network, such as the Internet, and
executed on a remote system hosting the requested
services.
 GIS APIs are designed to manage data for its delivery to
a web browser client from a GIS server
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Trends
 The overall trend for web-based mapping is:
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with more highly interactive, user-driven client interfaces as
well as the desire by the general internet user to see the
underlying data as a 3D environment and not a 2D flat-earth
map.
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Server-technology: service-oriented architecture (SOA) and
broad spatial capabilities
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
WEB Mapping Common Interface
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
US - Census Bureau
American Fact Finder
 Thematic Maps (Data)
 Reference Maps (Boundaries)
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Japan - Statistics Bureau, Ministry of Internal
Affairs and Communications
 Statistics GIS Plaza
 http://gisplaza.stat.go.jp
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Scalable Hardware -
Blade
Server
(Source: ESRI)
Server
Cluster
Server
Web
Services
Desktop
•
•
•
•
Faster
Multi Processors
Loosely Coupled
Connected
. . . and Services Oriented
Laptop
Tablet
PC
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
PDA
Population and Housing Censuses
Cell Phone
New Delhi, India, 28-30 May, 2012
Source: T. Trainor, US Census Bureau, 2009
Potential app?
As technological
developments and data
availability advance
rapidly, statistical
agencies must be
prepared to respond to
user expectations for
data access and
interaction
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
- Customized to Census
dissemination
- Use of SMS to disseminate
some census results (e.g. Kenya)
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Conclusions
 Collecting and analyzing census data is very important, but
unless the results of this analysis are communicated
effectively to their intended audience, the analysis will have
little impact on real policy decisions.
 Various tools are available
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User-oriented approach
Data accessibility
Geospatial-based approach
 Planning data dissemination
 The definition of geographic output products and the
time of their release should be coordinated with the
timetable for the overall Census project
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
THANK YOU!
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012
Anyone or anything can be associated with a
known location in the world
United Nations Sub-regional Workshop on Collection and Dissemination of Socio-economic Data from
Population and Housing Censuses
New Delhi, India, 28-30 May, 2012