Abstract
In order to establish the city three-dimensional
Geographic Information System, combine with the
current emerging technologies of three-dimensional
Geographic Information System, to explore a new
method to open out 3D GIS by integrating Google
SketchUp and ArcGIS. The results show that: Google
SketchUp combine with ArcGIS can set up the 3D city
model quickly, however, the 3D spatial query and
analysis functions of GIS is difficult to achieve, can
only choose C#.NET as the development platform and
ArcGIS Engine as software development kit, to realize
some functions such as three-dimensional roaming,
integrated query, buffer analysis, underground
pipeline explosion analysis, etc.; The results may have
some reference value in the three-dimensional spatial
data model and data structure, three-dimensional
spatial data management and spatial data analysis and
visualization of expression.
1. Introduction
In this paper, the city three-dimensional Geographic
Information System data base on real data of the city of
Anning urban pipeline, and choose the Access as the
database.
Each of the pipelines are designed two table, one
as the point table, to storage the coordinates and
attributes of point data. One as the line table, to storage
the coordinates and attributes of line data.
Figure 1. Gas point database table
2. Google SketchUp combine with ArcGIS
Google SketchUp use the plug-in to convert the
ArcGIS two-dimensional data to three-dimensional
data. The data format is Multipath. Multipath as a new
object of ArcGIS used to describe the surface of threedimensional
solid.
Multipatch graphics can display in the AcrScene
and ArcGlobe.