1. ArcView_module_7 May 14, 9:00 AM
Editing a Table
ArcView_module_7
May 14, 9:00 AM

2. Outline
Table Editing Steps
Field Types
Calculate

3. Editing a Table
In ArcView, editing is not saved until you confirm

4. Table Editing Steps Choose the Start Editing from the Table menu
While you’re editing, the field name is NOT shown in italic.
Confirm editing when finished with editing by choosing the Stop Editing from the Table menu in a Table.

5. Field Type
Number
String
Boolean
Date

6. Field Type - number
The width includes the count of decimal places and negative sign.
If the Decimal Places is set to 0, the field becomes an integer

7. Calculate
Allows you to input values into the selected records if selected (all records otherwise) on the field you specified
Good to input new values derived from the other fields (e.g. arithmetic operation + * / -, string requests right(), substitue(,), conversion requests)

8. Calculate Choose the Start Editing
Click on the name of the field you wish to calculate
Click the Calculate button
In the Field Calculator dialog box, enter the calculation expression using fields and requests

9. Field Calculator dialog box
There are a variety of requests depending on the field type

10. Calculation Expression: Syntax
[Area_nm] = [Cnty_nm].Count
Requests Count applies to [Cnty_nm] and return any number.
Field
dot
Requests
[Area_nm] = The number of characters in [Cnty_nm]

11. Calculation Expression: Operator Precedence
In the absence of parentheses, operations with higher precedence are performed first
* 2 =/= 42 + (3 * 2) = 48
= (42 + 3) * 2 = 90