ESTABLISHMENT OF A DATA CREATION METHODOLOGY UNDER THE
GEOGRAPHIC INFORMATION STANDARDS
Kohei Isobe
Kokusai Kogyo Co., Ltd, 2-24-1 Harumi-cho, Fuchu-shi, Tokyo, 183-0057 JAPAN - kohei_isobe@kkc.co.jp
Commission IV, Working Group IV/1
KEY WORDS: GIS, ISO/TC211, JPGIS, Standardization, Product Specifications
ABSTRACT:
A new Japanese law requires that basic spatial data covering the entire national land of Japan are to be developed in accordance with
the Japan Profile for Geographic Information Standards (JPGIS). As a result, the parties developing the data will need to acquire the
technology to develop more advanced, higher-quality spatial data than ever before. In order to develop various types of spatial data
under the JPGIS, we have established some working methods that are different from conventional methods. For example, a system to
reduce mistakes by limiting the planimetric features available according to knowledge and skill level. A data input system that
allows workers to apparently perform the same operations for data entry without confusion, even though they are using a working
method that is different from the conventional method. These methods and systems have enabled the easy development of spatial
data under the JPGIS. In future, various types of spatial data as well as basic mapping information will be created in accordance
with the JPGIS. In order to meet specifications, a total production system that supports workers, software and documents must be
developed.
1. INTRODUCTION
A new piece of legislation, the “Basic Law on the Use of
Geographic Spatial Information”, otherwise known as the
“NSDI (National Spatial Data Infrastructure) Law” came into
effect in Japan. Under this law, basic spatial data covering the
entire national land of Japan will be developed in accordance
with the Japan Profile for Geographic Information Standards
(JPGIS). (JPGIS are standards extracted from the ISO- and JIS-
based geographic standards that are actually used in Japan.)
The national basic map information will also be made available
free of charge via the Internet and other media. Since the
national basic map information will be developed under the
JPGIS, it is expected that prefectural and municipal spatial data
will also be developed in accordance with the standards in the
future.
As a result, the spatial data of Japan will be made available for
the convenience of the administration and the public; but the
parties developing the data will be required to deal with the
technology to create more high-quality and highly-specified
spatial data.
One of the reasons for these higher requirements is that the
parties developing the data, who have so far been providing
spatial data for specific uses to specific clients, will have to
provide the same spatial data for various uses to an increasing
number of clients.
For instance, there will be calls for the planimetric features
forming the backbone of geographic information to be of higher
quality; and it is also anticipated that the data architecture will
be more complicated in order to provide greater applicability.
The cost of data creation for this purpose will be higher than
ever before. In addition, problems arising from more
complicated procedures and more advanced technology in data
creation will become apparent.
For municipal services, we have been promoting data creation
in accordance with product specifications that are compliant
with the JPGIS standards, and have accumulated a great deal of
know-how on data creation methodology.
We have established some working methods that are different
from conventional methods, in order to develop various types
of spatial data in compliance with the JPGIS. This paper
describes the data creation methodology in detail.
2. DATA CREATION METHODOLGY IN
COMPLIANCE WITH JPGIS
2.1 Comparison of Data Creation Methods
The production method that we have established is a data
creation method that is not only compliant with the JPGIS but
also allows JPGIS-based data to be developed for the same cost
as the creation of conventional topographic map data. Figure 1
shows a comparison of the new data creation and the
conventional topographic map data creation method.
Figure 1 Comparison of conventional and JPGIS-based data
creation methods