Autodesk 15606-011408-9005 - MAP R6.3 NAMED-10U PK, Руководство по обучению, Страница: 307 / 332

Exercise 5: Create a calculated property
Now you have joined owner data to the Parcels layer and saved the result to
a new data store. You can use the combined information to create a calculated
property. The calculated property is the result of an expression: in this case,
the last sales price divided by the area.
NOTE To create or manage calculations, you must be connected to the data store
that contains the data for the calculation.
NOTE This exercise uses the map you modified in Exercise 4: Save the properties
to a new data store (page 296).
To create a calculated property using joined data
1 If the Data Table is not still open from the previous exercise, select the
Parcels layer in Display Manager and click Table.
2 At the bottom of the Data Table, click Options
➤
Create A Calculation.
3 In the Create A Calculation dialog box, name the calculated property
“ValueByArea.”
4 Click Properties. Select Assessor| LAST SALES PRICE.
Exercise 5: Create a calculated property | 299