Knowledge base

Adding a Field to a Feature Layer

1. Navigate to the desired Web Map Item Details

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2. Click Open in Map Viewer

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3. See the Web Map

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4. Click Content

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5. Click the Show Table icon null 100 under the desired layer

Note: This example uses the Pradan geometry – Polygon layer

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6. See the Table View

7. Click Options

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8. Click Add Field

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9. Fill out all content

Note: This example uses double type for its numerical field for area in hectares

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10. Click Add New Field

11. See the new Field in the Table

Note: This example uses the Hectares field

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12. Click on the field name, Hectares

13. Click on Calculate

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14. The Calculate Field window appears

15. Fill out the SQL Expression

Expression: POWER(Shape__Area,2)/10000

Explanation: The Shape_Area field is in meters. In order to convert meters to hectares, you must base the expression on the following equation: Ha = m2/1,000null 109

16. Click Calculate

17. See that the Hectares field has been calculated