Consulta para aplicar simbología según el valor de un campo

Question

Tengo varios miles de puntos en un mapa web, cada uno con su propia categoría de simbología. ¿Hay alguna forma de aplicar una simbología determinada según el valor de un campo? Por ejemplo, una expresión Arcade:

IIF($Attatchment != "", usar este símbolo; si está en blanco, no cambiarlo)

El campo por el que pregunto es el de los adjuntos. Tengo usuarios que salen al campo y toman imágenes de los puntos. Sería ideal que los equipos de campo pudieran ver, según la simbología, si ese punto ya tiene una imagen adjunta asociada. No es viable cambiarla manualmente.

La capa de origen de estos puntos está alojada en Arc Server. Tengo acceso a ella desde mi equipo local en ArcMap, por si eso permite otras posibles soluciones.

XanderBakker · Answer

Good one, I forgot that I posted that option... There might be another alternative. Will dive into that and post later...

Edit: I guess you could use the suggestion provided by Nat Carter (see last comment: https://community.esri.com/thread/117274#comment-695968 ) to create two layers and include a definition query and publish those. It works in Desktop and might work in the published service too.

Anonymous User · Answer

Howdy!

It looks like you can run some custom symbology logic from the root data (How to symbolize which features have attachments? ) and then should be able to publish up using that symbology logic.

If that doesn't work for you, you could also have a Python logic that parses the feature's endpoints for the attachment count: Attachment Infos (Feature ID: 298186). You'll probably need some solid experience with Python and XML/JSON parsing, but it could also accomplish what you're looking for.

XanderBakker · Answer

When you apply Arcade for symbology you will return values (numbers or strings) that you will base your symbology on. There is another aspect to take into account and that is the fact that the attachment is in a related table, not in the feature layer itself, so your Arcade script does not have access to it (yet, since this will probably be possible in a future release or Arcade).

You can create a script (and program a scheduled task) that will populate a field (with the count of related attachments or a simple "Yes", "No") that you can use to symbology the data on indicating if a geometry has an attachment.