Usando Expressões Calculadas com Registros Relacionados no ArcGIS Field Maps

Question

Você já quis preencher automaticamente informações de atributos em uma nova feição para economizar tempo e evitar erros? Isso é possível com expressões calculadas no ArcGIS Field Maps! Este vídeo foi gravado usando o ArcGIS Field Maps em agosto de 2022. Para mais informações sobre expressões calculadas comuns e exemplos, clique aqui.
Para treinamento adicional em gerenciamento de dados de campo, confira o curso da Esri Coleta e Gerenciamento de Dados de Campo Usando ArcGIS: https://bit.ly/3EyRgd0

Aqui está um código semelhante que você pode copiar e colar:

// Obter o conjunto de feições para os hidrantes
var hydrants = FeatureSetByRelationshipName($feature, 'wHydrant', ['facilityid'], true)

// Obter o primeiro hidrante (deve haver apenas um)
var hydrant = First(hydrants)

// Se houver um hidrante, retorne o facilityid dele,
// Caso contrário, retorne null
if (!IsEmpty(hydrant)) {
return hydrant['facilityid']
} else {
return null
}

Esteban_Leguizamo · Answer

I am having an issue with this code because now I am trying to pull a value instead of a text field. I am trying to pull a value from the related record as an input, but I just keep getting  "Test execution error: Cannot read properties of null (reading 'toString'). Verify test data."

KaitlinFinan · Answer

Hi @JordanHeiman yes - that is possible! I just tested it and provided some screenshots. 1. This is where I clicked on a point and saw the related Parent table. 2. After adding a record to the Parent table, I could also add a record to the child table. Now I can see the parent table is related to the point and the child table. I would read this tech support article first to make sure your data relationships are set up correctly for Field Maps https://support.esri.com/en-us/knowledge-base/how-to-set-up-related-tables-in-arcgis-pro-for-use-in-a-000028010. You would need to create a relationship class between the point/line/poly layer and the parent table AND create a relationship class between the parent table and child table.

From there, here are is a great Learning Plan to get started with Field Maps https://learn.arcgis.com/en/paths/try-data-collection/

There are a lot of helpful blogs as well https://www.esri.com/en-us/arcgis/products/arcgis-field-maps/resources

We also offer a 2 day instructor led course that is about Field Data Collection and includes Field Maps https://www.esri.com/training/catalog/5952ca883885672fa2147a4f/field-data-collection-and-management-using-arcgis/

JordanHeiman · Answer

This video was super helpful! I am trying to setup a form with this feature but I was also hoping to collect data to another table that is related to the first table. In your example this would be like having a child table from the inlet inspection that can also be filled out. Previously we were using Survey 123 and were able to have a repeated record within a form but we are considering switching to Field Maps. Is this sort of set up possible with Field Maps?

Also, what is the best resource or training videos for learning about setting up Field Maps?