topic Re: Conditional Arcade Expression in ArcGIS Online Questions

Conditional Arcade Expression

ShawnWampler — Thu, 04 Apr 2024 21:14:25 GMT

Hello, I'm trying to create a popup that includes a URL to report a problem based on a field. If the user chooses a State Road my pop up indicates that the road is maintained by the State but I want to include a URL to report a problem to the State. If the road is maintained by the City I want a different URL for those problems. Then I have some roads that are private that I do not wish to include a URL at all. I have a working maintenance expression to show the maintenance but I'm not sure how to show only certain jurisdictions having a URL. Thanks in advance for any help!

if ( $feature.MAINTENANCE == "CITY" ) {

return "The City of Annapolis "

}

else if ( $feature.MAINTENANCE == "PRIVATE") {

return "A Private Entity"

}

else if ( $feature.MAINTENANCE == "STATE" ) {$feature

return "State Highway Adminstration"

}

else if ( $feature.MAINTENANCE == "NAVAL ACADEMY" ) {$feature

return "United States Naval Academy"

}

else if ( $feature.MAINTENANCE == "COUNTY" ) {$feature

return "Anne Arundel County"

}

else if ( $feature.MAINTENANCE == "FUTURE (CITY)" ) {$feature

return "Private but future City"

}

else {

return "UNKNOWN"

}

Re: Conditional Arcade Expression

jcarlson — Fri, 05 Apr 2024 12:19:53 GMT

You'll want to use an Arcade popup element for this, where you can include HTML.

Also, when you're series of if/else/then statements are nice and simple like this, you can replace them with a When statement. "When(condition1, response1, ... conditionN, responseN, fallback_response)"

However, when your conditions all use the same field, you can also just replace it with Decode. "Decode(field, value1, response1... valueN, responseN, fallback_response)"

var maintainer = Decode( $feature.MAINTENANCE, 'CITY', '<a href="link to city URL">The City of Annapolis</a>', 'STATE', '<a href="link to state URL">State Highway Administration</a>', 'PRIVATE', 'A Private Entity', // no link on this one! 'NAVAL ACADEMY', '<a href="link to academy URL">United States Naval Academy</a>', 'COUNTY', '<a href="link to county URL">Anne Arundel County</a>', 'FUTURE (CITY)', 'Private but future City', 'UNKNOWN' ) return { type: 'text', text: maintainer }

Re: Conditional Arcade Expression

CarsonMorton — Tue, 09 Apr 2024 20:07:15 GMT

I don't know if this works for the original poster, but hot diggity dog I am saving this for later! (both the Decode and the HTML)