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Psaní vlastních výrazů pro popisky pomocí Arcade v ArcGIS Online?

NevinValles

Jazyk Arcade neznám, ale snažím se napsat jednoduchý výraz. Potřebuji napsat výraz pro popisek s podmínkou if-else, který bude označovat adresy jejich číslem, pokud není uvedeno číslo bytu; v opačném případě chci, aby popisek zobrazoval číslo bytu. Prostudoval jsem tuto dokumentaci https://developers.arcgis.com/arcade/function-reference/logical_functions/ . Potřebuji něco ve smyslu: Pokud adresa není Null, použij její číslo, jinak použij číslo bytu. Jen se nevyznám ve struktuře jazyka Arcade.

Najděte více příspěvků označených jako

Accepted answers

DianaLavery1

FYI, You might have to use feature notation..., meaning it might be

iif(isEmpty($feature.addrunit),$feature.addrnmbr,$feature.addrunit)

All comments

XanderBakker

Can you share how your data looks like and provide an example of what you would like to obtain for the different situations?

NevinValles

I need the address numbers to display/label by default, unless there is an address for the unit. There can be many units associated to the one address and we need to display these. For example, a parcel with 10 units should display the 10 unit numbers as separate points, but there is still an individual point with just the address number that should be displayed as well.

Address Data Table

NevinValles

Sorry, this is my first time using Geonet and I added a new comment rather than replying. I'm not to sure if you will receive a notification from my comment so i'm replying here.

DianaLavery1

Try combining the "isEmpty()" and the "iif()" logic functions, which works similar to the if-function in Excel:

IIf( condition, trueValue, falseValue )

in your case, it sounds like it would be

iif(isEmpty(addrunit),addrnmbr,addrunit)

Here's the Arcade Function Reference list for your reference:

https://developers.arcgis.com/arcade/function-reference/

XanderBakker

Hi Nevin Valles , adding a reply to the same thread is the way to go. I'm sorry that I did not answer before, but the answer provided by Diana Lavery should be the way to go (if the field is really empty). Can you please try that suggestion? If it works, please mark her post as the right answer.

DianaLavery1

FYI, You might have to use feature notation..., meaning it might be

iif(isEmpty($feature.addrunit),$feature.addrnmbr,$feature.addrunit)

NevinValles

Hi Diana,

I'm still not getting the labels to display correctly. It is displaying only some of the ADDRNMBR's and some of the ADDRUNIT's.

XanderBakker

Perhaps the field is not really Empty (Null) and contains a space or something similar. This could explain the behavior.

DianaLavery1

Labels are a dynamic thing in ArcGIS Online. The features that actually get labels to show up will probably change as you zoom in & out, and pan around. At least that's been my experience.

KellyGerrow

Can you share your map?

NevinValles

Xander was correct because there were records in the field that had spaces, once I reclaculated the expression worked perfectly! Thank you for the expression Diana and thank you for the correction Xander!

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