This tutorial is intended to introduce you to the basic use of ArcGIS 8.2. ArcGIS is a large program with many extensions and many uses. We will concentrate on ArcMAP and ArcCatalog. In this workshop, you will learn how to:
add layers to a map including Shapefiles, Coverages, and Grids.
use the Spatial Analyst extension.
change the symbology to help understand the data.
work with tables and join tables to map layers.
work with geoprocessing tools - buffer and spatial join.
work with layouts for better presentation of map data.
create and edit shapefiles.
ArcMAP is the desktop interface for ArcGIS. Look for ArcGIS in the Start menu then look for ArcMAP. You will be prompted on whether or not you want to open a new project or an existing one. You should open a new project.
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在ArcMap中,进行属性查询的时候,Arcmap中提供了选中字段的属性的Unique Value。这样就可以从列表中选择了。以前也遇到类似问题,一直不知道怎么做,好在当时使用的ArcSDE Oracle数据,使用了一个SQL语句解决了。不过要是Coverage就没有办法了。其实AO中提供了这样的功能了,可通过IDataStatistics来实现,下面是今天中午的成果,做了一个函数,参数为图层和字段,返回该图层该字段的所有Unique Value
'下面程序段是用来列出ArcMap中,指定图层和字段中,所有Unique Value
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