Graphics Reference
In-Depth Information
Figure
.
.
[his figure also appears in the color insert.] A representation of association rules
have layered information) and operability, because extensive communication with
a server is necessary upon every user request. Moreover, scalability problems (extra
functionality cannot be added to the application) and picture quality issues (as de-
scribed in the “Introduction") are also troublesome. In the case of Java applications,
developmental costsincreasebecausemanycomponents (includingtheinterfaceand
drawing components) are required in order to develop a useful and convenient sys-
tem.headoptionofSVGisexpectedtoenahnceproductivityandconveniencewhen
applied to GIS applications on the Web. he advantage of using SVG in GIS applica-
tions is easy operability, because SVG enables only part of a graphic to be changed,
and it allows graphics layering without necessitating the entire graphic to be reread
upon a user request.
An example of a SVG-based GIS web application is described below.
Okayama Trade Area Analysis System
his system was developed in order to visualize data for a trade area obtained in ten
behavioral area surveys performed in Okayama prefecture,Japan, from
.In each
survey,
,
-
,
replies were collected, and a number of samples were obtained
for each of
municipalities in proportion to the population of the city, town or
village in the area in order to examine the change in the population of each local
municipality. he survey consisted of questionnaire items regarding the city, town
or village in which the respondent most frequently purchased or used
items or
services.
