Symbolika ArcGIS Online / Portal pomocí Arcade

Question

Dobrý den,

Přijde mi skvělé, že lze nový jazyk Arcade používat pro symboliku nebo popisky v ArcGIS Online / Portal.

Narazili jsme ale na následující problém:

Když pomocí Arcade vytvořím symboliku založenou na dvou polích a spojím je do jedné hodnoty pro symboliku, symboly zmizí z mapy i ze šablony prvku a zobrazí se pouze černý bod!

Naše služba prvků má vlastní šablonu prvku vytvořenou ze spojených polí, ale při úpravách se vytvořené symboly (značky) nezobrazují.

Napadá někoho, proč se to děje?

S pozdravem,

Karsten

XanderBakker · Answer

Hi Karsten Rank ,

Not sure if I understand your question correctly, but if you want to publish a layer that has a dynamic calculation inside of it, you might want to look at attribute rules. With calculation attribute rules you can have a trigger that the creation of a new feature starts the calculation of a field based on other fields automatically.

More info here:

* https://pro.arcgis.com/en/pro-app/help/data/geodatabases/overview/an-overview-of-attribute-rules.htm
* https://www.esri.com/arcgis-blog/products/arcgis-pro/data-management/attribute-rules-whats-new-in-arcgis-pro-2-3-and-arcgis-enterprise-10-7/

KarstenRank · Answer

I want to create a symbology depending on two field on the flow.. E.g. if you have five different layers with 20 different symbols, the editor widget is overloaded with 100 symbols.

So my idea was to show only a standard symbol and by changing the attributes, the symbol should change.

Is it possible to publish a field calculation with ArcGIS Pro to a Portal feature service?

XanderBakker · Answer

Hi Karsten Rank ,

What I think is happening is that there is no support for the edit templates to be based on a "virtual field" created with an Arcade expression. I can imagine that you would like to select a concatenated value and that this would fill the two fields it is based. Is that what you want to achieve?

You can use the field calculation and create a actual field for the concatenated values (for which you could define a domain with the accepted values) and create two expressions to extract both parts from this field. That would work.