单词choropleth
网络: 等值线图；面量图
Three common quantitative thematic maps are choropleth maps, dot maps and proportional symbol maps.
面量图、点子图及比例符号图中三种最常见的定量专题地图。
Producing raster population surface is more accurate and natural than the traditional choropleth map of population density.
结果显示：用该方法生成的栅格化人口表面，较传统的地区人口密度分布图更加准确和自然。
Study on the development of a choropleth atlas on cancer mortality using the inverse distance weight interpolation in the 1990"s
使用反距离权重内插法绘制中国1990年代肿瘤分布地图