Seeing the Results of the Join
____ 13. Dismiss the LC_Code&Type table. Using the Identify tool cursor, click a polygon in the map display. Notice that the amount of information you get is substantially greater than before. Specifically, you see not only the land code (LC_CODE) but also the type (LC_TYPE) that is associated with the code. The important thing is that you have added the contents of one table to another. Dismiss the Identify window.
____ 14. Open the attribute table of the Landcover layer. Notice that all the information has been put together. Sort the LC-type. How many polygons consist of “Barren” land? ______
A note of warning: The product of the preceding process—the table with information gleaned from two tables—will persist only as long as ArcMap is running and Landcover remains as a layer. If you wanted to save the new table together with the geography of Landcover, you would have to take additional steps. One simple way to not lose your work is to save the map.
____ 15. Dismiss ArcMap. When asked if you want to save the map indicate Yes, giving it the name “Map with Joined Landcover Table” and placing it in ___IGIS-Arc_YourInitials.
Understanding the ArcGIS Help System
The Help system in ArcGIS has many facets. There are several ways to access different kinds of Help. Knowing how to access the various pieces of documentation will make your use of ArcGIS more efficient and less frustrating. You will start with a nifty mechanism ...