ArcGIS_Desktop_基础培训.pptVIP

Introduction to ArcGIS I (for ArcView 8, ArcEditor 8, and ArcInfo 8) 1-* Introduction to ArcGIS I (for ArcView 8, ArcEditor 8, and ArcInfo 8) 1-* Introduction to ArcGIS I (for ArcView 8, ArcEditor 8, and ArcInfo 8) 1-* Select by graphics You may use the tools on the Drawing toolbar to add graphics to the ArcMap display. For example, you may want to digitize a polygon around a group of islands that you want to select. Once the graphic has been added to the display, the Select by Graphics option is activated on the Selection menu. Introduction to ArcGIS I (for ArcView 8, ArcEditor 8, and ArcInfo 8) 1-* At this point, your instructor may choose to demonstrate some of the concepts discussed in this lesson. You will also be introduced to the ArcGIS applications you will use for the remainder of the class. Introduction to ArcGIS I (for ArcView 8, ArcEditor 8, and ArcInfo 8) 1-* Introduction to ArcGIS I (for ArcView 8, ArcEditor 8, and ArcInfo 8) 1-* Tables A table contains formatted descriptive information. In ArcGIS, the information in a table is generally associated with spatial data, such as a feature attribute table, but can also be independent of any spatial data (e.g., nonspatial statistical data). For the purposes of this course, you will consider only tables that contain information related to spatial datasets. The feature attribute table contains descriptive information about the features in a feature class. To open a feature attribute table in ArcMap, right-click the layer, then click Open Attribute Table. In ArcCatalog, you highlight the table and view it using the Preview tab. The feature attribute table consists of fields (also known as columns or items). Each field represents one type of descriptive information. Each row (also known as a record) contains the attributes of one feature in the dataset. Introduction to ArcGIS I (for ArcView 8, ArcEditor 8, and ArcInfo 8) 1-* Understanding table anatomy Each table has the same basic format: an array of