Use multiple Arcade IF statements in ArcGIS Online

Summary

Custom expressions written in Arcade can be used to configure pop-ups in ArcGIS Online. These expressions can be used to generate new data with reference to a field with different values in a layer's existing fields. In some cases, multiple conditions must be set within a single logical operator, and therefore, the 'if...else if...else' logical operator can be utilized to specify the multiple conditions in the single code block.

This article provides the steps to reference values in a field and classify them using the 'if...else if...else' logical operator in ArcGIS Online Map Viewer. In this example, the value of the LEVEL_NO field is referenced to classify the marketing targets for each point symbol.

Procedure

1. Open the map in Map Viewer. Click Layers on the Contents (dark) toolbar and select the <layer name> with the pop-up for editing.

2. Click Configure pop-ups on the Settings (light) toolbar and click Manage expressions.

3. Click + Add expression to open the Arcade expression editor window.

4. Specify the following Arcade expression in the Expression window. Modify accordingly to the desired field names and values with the else operator at the end of the expression. In the sample below, there are three conditions set using 'if' and 'else if', to return value1, value2, and value3, respectively, if the specified condition is fulfilled. To close the operator, the else operator is set to return values that do not fulfill any of the set conditions in the if...else if portion of the expression.

Note:
More conditions and return values can be set by adding more 'else if' operators.

if ( $feature["<field name>"] == <field1>) {
return "<value1>"
}
else if ( $feature["<field name>"] == <field2>) {
return "<value2>"
}
else if ( $feature["<field name>"] == <field3>) {
return "<value3>"
}

else {

return "<value4>"

}

5. Rename the New expression and click OK.

6. Click the Previous button above the newly created Arcade expression in the Pop-up expressions pane.

7. Click Fields list to expand the list of fields displayed in the pop-ups and click Select fields.

8. Check the expression field and click Done.

The image below shows the pop-up display without the Arcade expression.

The image below shows the pop-up display with the Arcade expression.