Transcript GIS website of e

Training Course on Analysis and Dissemination of Population and Housing
Census Data with Gender Concern
3 - 7 October 2011, Dili, Timor-Leste
GIS based Census Data
Dissemination
H. Furuta
Lecturer/Statistician
SIAP
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Contents
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Statistical Maps
What is GIS
Small area statistics
Grid square statistics
DID (Densely Inhabited District)
Demo: Web GIS of Japan
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Population density by administrative boundary “prefectures”
Population per square kilometer
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Population density by administrative boundary “municipalities”
Population per square kilometer
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Workers and students commuting to Ku-area of Tokyo
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Webpage of ‘Statistical Maps of Japan’
• SBJ(www.stat.go.jp) – English – Statistics – Region/Geographic Information
– Statistical maps of Japan
• URL: http://www.stat.go.jp/english/data/chiri/map/index.htm
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Population Census 2005 Statistical Maps of Japan
• Ready-made thematic maps
• Formerly, provided in the form of atlas or poster to the limited users
• Now, available on the web for all the public
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What is GIS
Geographic Information System
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Statistical GIS
• Stat Map = Map + Stat data
• Stat GIS = GIS application
+ Boundary data of regions
+ Disaggregated data by region
• Sometimes, point data (coordinates) , such as place
of the regional office, represents the region.
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Boundary data
• Administrative area
– Not stable
• Measures against instability
– Concept of BUB (Basic Unit Block) in Japan
– Grid square using latitude and longitude
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Disaggregated data by region
• Administrative area
– Prefectural governments (47)
– Municipalities (city, town, village)
• Minimal survey area
– BUB
– ED
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Geo-Relational Model
Layer 1 : Roads and houses
Layer 2 : Rivers
Layer 3 : Land use
Layer 4 : Land image
Real world
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Analysis by GIS
Road map
Area within 1 km of a road
Land image map
Comparatively flat area
Land use
Not forest area
Result of analysis
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Small Area Statistics
by BUB/EA
 Boundary data of each EA
 Disaggregated data by EA,
such as, population by sex and age group and
number of households
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Inundated Area Map of three prefectures of suffering of East Japan
great earthquake disasters
Miyagi
prefecture
Iwate
prefecture
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Inundated Area Map of three prefectures of suffering of East Japan
great earthquake disasters
Number of the population, the
households which lived in the
inundation area
Populattion
Fukushima Atomic
Power Plant
Household
Total
510,697
179,278
Iwate prf.
107,503
39,673
Miyagi prf.
331,902
116,758
71,292
22,847
Fukusima prf.
2010 Population Census Preliminary Counts of the
Population and Households
Fukusima
prefecture
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Inundated Area Map made by Geospatial Information Authority
Miyagi pref.
Kesennnuma Ciry
aerial photo
Inundated Area Map
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Calculating population and the number of the households with
small area statistics
BUB/ED
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Grid Square Statistics
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Grid square statistics
 Administrative boundaries have varied sometimes
== time series comparison becomes difficult
 Administrative boundaries are not suitable for small area analysis
The Statistics Bureau has reorganized the result of the Population Census and the
Establishment and Enterprise Census into small regional square of approximately 1km2
(1Km x 1Km) and 0.25km2 (500m x 500m), dividing the whole area of Japan by latitude
and longitude.
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Assignment of enumeration districts into grid squares
 Boundary data of each grid square
 Statistical data by grid square
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Grid square statistics in Japan
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English pages available
http://www.stat.go.jp/english/data/mesh/index.htm
Ready-made compiled statistical data by grid squares
GIS software used for presenting maps of grid square statistics
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Population change of Tokyo area between 1995 and 2005 by grid square
statistics
Red: Increase by more than
1,000 people
Blue: decrease by more than
1,000 people
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Population of the aged 65 years and over
in Chugoku District
and over
Many marginal hamlets
In intermediate and mountainous area
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Population of the aged 65 years and over
Tohoku District
Chugoku District
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DID (Densely Inhabited District)
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Densely Inhabited District
 Promotion law for consolidation of towns and villages was
enforced in1953.
 City Areas became larger than before and urban features of
the word “city” changed.
Year
Number of
city
Number of
towns
Number of
villages
Total
1953
286
1,966
7,616
9,868
1956
498
1,903
1,574
3,975
2010
779
844
197
1,727
Municipal
mergers
1999-2006
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Densely Inhabited District
 A DID was established as one of regional presentations for Population
Census 1960.
 A DID consists of adjoining basic unit blocks that have high population
density of 4,000 person/Km2 and overall population adds up to 5,000
residents or more.
 A DID is used as one of calculation criteria for the amount of Local
Allocation Tax which is annually grated from the national government to
the local government.
 A DID is also used as a basis for planning policy such as town planning,
redevelopment of urban areas, or disaster prevention measures.
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Densely Inhabited District
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Densely Inhabited District
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Densely Inhabited District
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Go to Demo:
Web GIS of e-Stat as a part of e-Gov Japan
e-Stat (http://www.e-stat.go.jp ) – Click ‘English’
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Portal of Official Statistics of Japan
• e-Stat (http://www.e-stat.go.jp ) – Click ‘English’
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Selecting statistical table
(A) Easy way:
Select set of tables
(B)
Select census/survey
Select table/item
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Presenting statistical map
1. Default:
Whole Japan
2. Go to selected
prefecture
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Map of Chiba Prefecture
• Go to seleted municipality
– Mihamaku, Chiba city
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Map of Mihama-ku, Chiba-city
• Focus on the area around Kaihim-Makuhari St.
Kaihim-Makuhari
Station
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Map of Kaihim-Makuhari
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Number of total population and pie chart of
gender in small area statistics
Select
statistical
itemst
Properties
Set Chart
Set Label
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Aggregates of small areas within radius 500m
from Akihabara Station
Select boundary
Akihabara
Station
Tabulation based on
selected boundary
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