格网人口图的计算机制图方法

本文以江苏为例,对约100幅地形图进行全盘采样,获得三万多居民地小方块数据,应用小方块与人口之间的密切关系,进一步获得三万多人口数据。在此基础上做出分别以格网分区图表法、格网分级比值法、等值线法表示的三幅江苏省人口密度图;以定位布点法表示的江苏省人口分布图。它们的共同特点是都以大量人口数据为基础编制而成。

COMPUTER MAPPING METHOD OF RASTER POPULATION MAPPING

This paper presents a case of Jiangsu Province. The author picks up more than 30,000 data of resident areas from topographical maps. More than 30,000 population data are picked up from the transformed data of inhabitation. The author presents 3 maps on the population density of Jiangsu Province drawn by the raster dasymetric diagram method, raster dasymetric choropleth method and isopleth method respectively, and the map on the population distribution of Jiangsu Province drawn by the fixed position dot-dissemination method on the base of population data. The common characteristic of the maps is that they are drawn by using much more population data based on km rasters.