基于夜间灯光和微博签到数据的郑州市城市空间结构识别

魏石梅,潘竟虎

Identification of Urban Spatial Structure in Zhengzhou City based on Nighttime Light and Microblog Check-in Data

Shimei Wei,Jinghu Pan

图2 局部等值线树形成及简化过程图

Fig.2 Formation and simplification process of the local contour tree