Introducing Geographic Information Systems with ArcGIS: A Workbook Approach to Learning GIS, 3rd Edition

Further Examining the Wildcat Boat Facility Area Data Sets

Do the following steps using the datasets in

___IGIS-Arc_YourInitials

____ 24. In the Catalog Tree, click Soils feature class, within the Area_Features feature data set. Click the Preview tab.

This feature class uses polylines to enclose areas (polygons). Each of the polygons is considered to be homogeneous in a particular type of soil.

____ 25. Using the Identify tool from the Geography toolbar, click a polygon near the center of the map. The polygon becomes momentarily highlighted, and the Identify Results window appears. You get the plane area of the feature in square meters in the field Shape_Area. You also get, in the field Shape_Length, the sum of lengths of the polylines (in meters) that enclose the polygon. In the attribute field named SOIL_CODE, you are shown a code that identifies the soil type, such as Tn4. There is also an attribute (SUIT) that indicates whether the soil is suitable for the construction of a building: 1 for unsuitable, 2 for moderately suitable, or 3 for suitable. Click some other polygons. Click the largest polygon in the northeast (That’s water—note the SUITability and the SOIL_CODE: _______, ____). Dismiss the Identify Results table.

____ 26. Look at the attribute table for the Soils personal geodatabase feature class. Obtain statistics for the Shape_Area column of the table. What is the smallest area (to one decimal place)? ________ The largest? _______Close the Statistics window ...