GIS based Census Data Dissemination 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

Contents Statistical Maps What is GIS Small area statistics Grid square statistics DID (Densely Inhabited District) Demo: Web GIS of Japan

Population density by administrative boundary “prefectures” Population per square kilometer

Population density by administrative boundary “municipalities” Population per square kilometer

Workers and students commuting to Ku-area of Tokyo

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

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

Geographic Information System What is GIS Geographic Information System

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.

Boundary data Administrative area Measures against instability Not stable Measures against instability Concept of BUB (Basic Unit Block) in Japan Grid square using latitude and longitude

Disaggregated data by region Administrative area Prefectural governments (47) Municipalities (city, town, village) Minimal survey area BUB ED

Geo-Relational Model Layer 1 : Roads and houses Layer 2 : Rivers Layer 3 : Land use Layer 4 : Land image Real world

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

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

Inundated Area Map of three prefectures of suffering of East Japan great earthquake disasters Miyagi prefecture Hit by TSUNAMI on 11 March 2011 Iwate prefecture

Fukushima Atomic Power Plant 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 Household Total 510,697 179,278 Iwate prf. 107,503 39,673 Miyagi prf. 331,902 116,758 Fukusima prf. 71,292 22,847 Fukushima Atomic Power Plant 2010 Population Census Preliminary Counts of the Population and Households Fukusima prefecture

Inundated Area Map made by Geospatial Information Authority Miyagi pref. Kesennnuma Ciry aerial photo Inundated Area Map

Calculating population and the number of the households with small area statistics BUB/ED

Grid Square Statistics

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.

Assignment of enumeration districts into grid squares Boundary data of each grid square Statistical data by grid square

Grid square statistics in Japan 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

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

Population of the aged 65 years and over in Chugoku District and over Many marginal hamlets In intermediate and mountainous area

Population of the aged 65 years and over Tohoku District Chugoku District

DID (Densely Inhabited District)

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 towns 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

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.

Densely Inhabited District

Densely Inhabited District

Densely Inhabited District

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’

Portal of Official Statistics of Japan e-Stat (http://www.e-stat.go.jp ) – Click ‘English’

Selecting statistical table Easy way: Select set of tables (B) Select census/survey Select table/item

Presenting statistical map 1. Default: Whole Japan 2. Go to selected prefecture

Map of Chiba Prefecture Go to seleted municipality Mihamaku, Chiba city

Map of Mihama-ku, Chiba-city Focus on the area around Kaihim-Makuhari St. Kaihim-Makuhari Station

Map of Kaihim-Makuhari shopping store SIAP STATION HOTEL

Select statistical itemst Number of total population and pie chart of gender in small area statistics Select statistical itemst Properties Set Chart Set Label

Aggregates of small areas within radius 500m from Akihabara Station Select boundary Akihabara Station Tabulation based on selected boundary