Ändern mehrerer Werte in einem Feld eines Pop-ups mit einem Arcade-Ausdruck in ArcGIS Online

Zusammenfassung

Custom expressions written in the Arcade expression language can be used to configure pop-ups in ArcGIS Online. Expressions can be used to generate new data with reference to a field with multiple values in a layer's existing fields.

This article provides the steps to change numerous values in a field of a pop-up via ArcGIS Online Map Viewer. In this example, a new field (Species General Name) is added to the pop-up by using the SPECIES_CODE field as reference to display the full name of numerous fish species for each point symbol.

Vorgehensweise

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 > Manage expressions.

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

4. Specify the following Arcade expression in the Expression window.

var <variableName1> = Dictionary('<field1>', '<value1>', '<field2>', '<value2>',...);
var <variableName2> = Split($feature["<field name>"], ', ');
var <variableName3> = Count(values)
var <variableName4> = 0;
var <variableName5> = [];
if (<variableName3> > 0) {
    for (var <i> in values) {
        <variableName5>[<variableName4>] = <variableName1>[values[<i>]];
        <variableName4>++;
    }
}

return Concatenate(<variableName5>, ', ');

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.