utilization of gis in japan
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Utilization of GIS in Japan
Hiroyuki KITADA , Yumi SEKINENational Statistics Center
Japan
ContentOutline and Advantage of GIS
Utilization of Census data in GIS
Services by the “e-stat”
Grid square statistics
Densely Inhabited District
Challenge
Conclusion
Outline of GISGIS(Geographic Information System) enables an advanced analysis by managing and processing data that are linked to location(s) and displaying visually.
Land Information
Building Information
Road Information
Administration field and statistical Information
Original map where layer was overlapped
Advantage of GIS The display control in the map can be freely done. (expansion, reduction of the map, and movement of the display
position) Measurement of distance and area can be easily calculated. (measurement of distance between arbitrary points, area
measurement in arbitrary area) Data with the address can be automatically displayed in the map. The information extraction can be done easily by using the map. (classification display, map expression that corresponds to the
condition of designation) Effective expression can be freely done according to the
purpose. (It is possible to express it in the classification chart, the ranking map (choropleth map), and the graph chart and the distribution map) Three dimensional analyses can be done. (Bird's-eye view and the cross section, etc. can be made.)
Example of Using GIS DataCompilation of small area statistics
Compilation of Grid-Square(Mesh Blocks) Statistics
Demarcation of DID(Densely Inhabited District)
GIS data is used in various fields such as universities and research laboratories including the local public entity that promotes the regional administration.
Population density by administrative boundary “prefectures”
Population per square kilometer
Relation between GIS and Census dataGIS is used to decide “basic unit district” of
Population Census.GIS is formed with the census data which is
based on “basic unit district”.GIS is used to analyze small area statistics.
Statistical map can be made by using the data of Population Census.Data of the Census can be used in
2005,2000,1995 now. Statistical map that links Population Census
with Establishment and Enterprise Census can be made.
8
e-Stat (Portal Site of Official Statistics)
e-StatThematic Map
The statistical data shown in mapVarious statistical informations are displayed
on the map, and the graphical representation and the total of statistical data can be shown.
Data downloadVarious data can be downloaded.
Information on consolidation of towns and villagesConsolidation information between different
time points can be shown on the map.
The statistical data shown in map (example 1)Population total ranking map and statistic label display around Chiyoda Ward, Tokyo
The statistical data shown in map (example 2)Pie chart of population ratio of men to women around Chiyoda Ward, Tokyo
The statistical data shown in map (example 3)A border map of Narita city(Chiba pref.), and it’s consolidation information
Statistical map published with e-stat (example 1)Workers and Students Commuting to Ku-area of Tokyo-metropolitan
Statistical map published with e-stat (example 2)
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 and 0.25km2, dividing the whole area of Japan by latitude and longitude.
Grid Square Statistics
Grid-Square(Mesh Blocks)
Advantage of Grid-SquareQuantitative comparisons between mesh
blocks are easy.Time series comparisons of the region are
easy. The data of a particular region can be
easily acquired. Analysis, calculation and comparison
related to the distance are easy.
Time Series Comparison
Population of the aged 65 years and over
and overMarginal Villages
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
MunicipalitiesNumber 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
Densely Inhabited District A DID was established as one of regional presentations
for Population Census 1960.
A DID consists of adjoining basic unit districts that have high population density of 4,000person/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.
Population density by administrative boundary “municipalities”
Population per square kilometer
Densely Inhabited District
ChallengesConsideration of setting standards of metropolis areas
Adaptation to system change (change of operating system etc.)
ConclusionThe Census data takes an important role in
GIS.GIS is used to decide the basic unit district of
the Census.Utilization on web
Web-GIS Statistical maps can be made on web.
Statistical maps that Statistics Bureau published can be browsed on web.
Challenge of GIS in the futureConsideration of setting standards of the
metropolis areas
Thank you for your attention!
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