Developing a Tile-Based Rendering Method to Improve Rendering Speed of 3D Geospatial Data with HTML5 and WebGL

Table 1

Classification of data by levels.

Level	Applicable size
15	All modeling data
14	Diagonal length greater than 50 meters
13	Diagonal length greater than 65 meters
12	Diagonal length greater than 84 meters
11	Diagonal length greater than 109 meters
10	Diagonal length greater than 142 meters