Type Classification Code [英汉计算机大词典] n.分类码 :main.m (program control)discretize.m (converts image to discrete values)plotimg.m (plots划分 images)dirImg.m (computes the directional image)extract.m (extracts square portion of image抽取块方向图 - called by dirImg

专题图示例，判断生成的专题图类型,并判断是否接受多个字段。-Thematic map example, determine the resulting thematic map type, and determine whether to accept multiple fields.